* [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" @ 2017-12-19 19:18 Sergio Durigan Junior 2017-12-19 20:16 ` Simon Marchi 0 siblings, 1 reply; 5+ messages in thread From: Sergio Durigan Junior @ 2017-12-19 19:18 UTC (permalink / raw) To: GDB Patches; +Cc: Sergio Durigan Junior While fiddling a bit with -Wunused-variable, I noticed that "maint print c-tdesc" was always generating code for the "tdesc_type *field_type" variable, even when it wasn't used. This is caught by GCC when using -Wunused-variable, of course. So I modified the "print_c_tdesc" class to check whether "field_type" will be needed or not. In order to do the check, I basically copied the logic implemented on "void visit (const tdesc_type_with_fields *type)", specifically the "switch" part, and simplified it to determine which types need "field_type". It's on a new simple function called "need_field_type". Then, we can simply call this function when deciding whether to print "field_type", and that's it. I've also regenerated all the C files under gdb/features/, and as expected only those that don't need "field_type" were modified. yyyy-mm-dd Sergio Durigan Junior <sergiodj@redhat.com> * features/aarch64-core.c: Regenerate. * features/arc-arcompact.c: Regenerate. * features/arc-v2.c: Regenerate. * features/i386/32bit-core.c: Regenerate. * features/i386/64bit-core.c: Regenerate. * features/i386/x32-core.c: Regenerate. * features/or1k.c: Regenerate. * target-descriptions.c (class print_c_tdesc) <need_field_type>: New method. --- gdb/features/aarch64-core.c | 1 - gdb/features/arc-arcompact.c | 1 - gdb/features/arc-v2.c | 1 - gdb/features/i386/32bit-core.c | 1 - gdb/features/i386/64bit-core.c | 1 - gdb/features/i386/x32-core.c | 1 - gdb/features/or1k.c | 1 - gdb/target-descriptions.c | 41 ++++++++++++++++++++++++++++++++++++++++- 8 files changed, 40 insertions(+), 8 deletions(-) diff --git a/gdb/features/aarch64-core.c b/gdb/features/aarch64-core.c index 618a7ef787..3707b7e055 100644 --- a/gdb/features/aarch64-core.c +++ b/gdb/features/aarch64-core.c @@ -10,7 +10,6 @@ create_feature_aarch64_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.core", "aarch64-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "cpsr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SP"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/arc-arcompact.c b/gdb/features/arc-arcompact.c index 79b6889172..f81f0a26ba 100644 --- a/gdb/features/arc-arcompact.c +++ b/gdb/features/arc-arcompact.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_arcompact (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 2); diff --git a/gdb/features/arc-v2.c b/gdb/features/arc-v2.c index 9908b4c5ec..b2254b293c 100644 --- a/gdb/features/arc-v2.c +++ b/gdb/features/arc-v2.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_v2 (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 4); diff --git a/gdb/features/i386/32bit-core.c b/gdb/features/i386/32bit-core.c index de2ce474d5..294e86d81e 100644 --- a/gdb/features/i386/32bit-core.c +++ b/gdb/features/i386/32bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_32bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "32bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/64bit-core.c b/gdb/features/i386/64bit-core.c index f4cad06e66..9e39ee42d9 100644 --- a/gdb/features/i386/64bit-core.c +++ b/gdb/features/i386/64bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_64bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "64bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/x32-core.c b/gdb/features/i386/x32-core.c index acafc7dace..c268e11bea 100644 --- a/gdb/features/i386/x32-core.c +++ b/gdb/features/i386/x32-core.c @@ -10,7 +10,6 @@ create_feature_i386_x32_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "x32-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/or1k.c b/gdb/features/or1k.c index 929a5f9208..9169cae940 100644 --- a/gdb/features/or1k.c +++ b/gdb/features/or1k.c @@ -16,7 +16,6 @@ initialize_tdesc_or1k (void) feature = tdesc_create_feature (result, "org.gnu.gdb.or1k.group0"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "sr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SM"); tdesc_add_flag (type_with_fields, 1, "TEE"); diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 88ac55f404..fe4b5efbf5 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -1886,6 +1886,44 @@ public: printf_unfiltered ("\n"); } + /* Some targets don't need the "tdesc_type *field_type" variable. + This function returns true if TYPE is going to need it, false + otherwise. */ + bool need_field_type (const tdesc_type_with_fields *type) + { + switch (type->kind) + { + case TDESC_TYPE_UNION: + return true; + + case TDESC_TYPE_ENUM: + return false; + + case TDESC_TYPE_STRUCT: + case TDESC_TYPE_FLAGS: + for (const tdesc_type_field &f : type->fields) + { + if (f.start != -1) + { + if (f.type->kind == TDESC_TYPE_BOOL) + continue; + else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) + || (type->size == 8 + && f.type->kind == TDESC_TYPE_UINT64)) + continue; + else + return true; + } + else /* Not a bitfield. */ + return true; + } + break; + default: + error (_("C output is not supported type \"%s\"."), type->name.c_str ()); + } + return false; + } + void visit (const tdesc_type_with_fields *type) override { if (!m_printed_type_with_fields) @@ -1895,7 +1933,8 @@ public: } if (!type->fields.empty () - && !m_printed_field_type) + && !m_printed_field_type + && need_field_type (type)) { printf_unfiltered (" tdesc_type *field_type;\n"); m_printed_field_type = true; -- 2.14.3 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" 2017-12-19 19:18 [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" Sergio Durigan Junior @ 2017-12-19 20:16 ` Simon Marchi 2017-12-19 20:51 ` Sergio Durigan Junior 2017-12-21 9:10 ` Yao Qi 0 siblings, 2 replies; 5+ messages in thread From: Simon Marchi @ 2017-12-19 20:16 UTC (permalink / raw) To: Sergio Durigan Junior, GDB Patches On 2017-12-19 02:18 PM, Sergio Durigan Junior wrote: > While fiddling a bit with -Wunused-variable, I noticed that "maint > print c-tdesc" was always generating code for the > "tdesc_type *field_type" variable, even when it wasn't used. This is > caught by GCC when using -Wunused-variable, of course. So I modified > the "print_c_tdesc" class to check whether "field_type" will be needed > or not. > > In order to do the check, I basically copied the logic implemented on > "void visit (const tdesc_type_with_fields *type)", specifically the > "switch" part, and simplified it to determine which types need > "field_type". It's on a new simple function called > "need_field_type". Then, we can simply call this function when > deciding whether to print "field_type", and that's it. > > I've also regenerated all the C files under gdb/features/, and as > expected only those that don't need "field_type" were modified. I fiddled with this when I made my series about C++ifying tdesc, but removed it from the series since I thought it wasn't that important. I'm not against fixing it though. I think it would be nice if we used "-Wunused-variable -Wno-error=unused-variable", in which case your patch would avoid some warnings/noise. However, I don't really like the fact that this approach duplicates the logic. A simpler way would be to emit the field lazily when we actually need it, see patch below for an example. There's a bit more collateral damage in the generated files, since some declarations change place. We would need to do the same for the other variable declarations. Another solution I thought of would be to use a new scope every time we have an assignment and declare the variable in each scope. For example, this tdesc_type_with_fields *type_with_fields; type_with_fields = tdesc_create_union (feature, "vec128"); tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); tdesc_add_field (type_with_fields, "v2_double", field_type); field_type = tdesc_named_type (feature, "v16i8"); tdesc_add_field (type_with_fields, "v16_int8", field_type); field_type = tdesc_named_type (feature, "v8i16"); tdesc_add_field (type_with_fields, "v8_int16", field_type); field_type = tdesc_named_type (feature, "v4i32"); tdesc_add_field (type_with_fields, "v4_int32", field_type); field_type = tdesc_named_type (feature, "v2i64"); tdesc_add_field (type_with_fields, "v2_int64", field_type); field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); would become { tdesc_type_with_fields *type_with_fields = tdesc_create_union (feature, "vec128"); { tdesc_type *field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); } { tdesc_type *field_type = tdesc_named_type (feature, "v2d"); tdesc_add_field (type_with_fields, "v2_double", field_type); } ... } That should avoid the need to any logic to track which variables have been declared. It would make the generated code a bit more verbose, but I don't think it matters. Simon From b7542ac9ed04ac9d124b5bcc3fd564266f43e665 Mon Sep 17 00:00:00 2001 From: Simon Marchi <simon.marchi@ericsson.com> Date: Tue, 19 Dec 2017 15:03:02 -0500 Subject: [PATCH] print_c_tdesc: print field_type declaration lazily --- gdb/features/aarch64-core.c | 1 - gdb/features/aarch64-fpu.c | 2 +- gdb/features/arc-arcompact.c | 1 - gdb/features/arc-v2.c | 1 - gdb/features/arm/arm-with-iwmmxt.c | 2 +- gdb/features/i386/32bit-core.c | 1 - gdb/features/i386/32bit-mpx.c | 2 +- gdb/features/i386/32bit-sse.c | 2 +- gdb/features/i386/64bit-avx512.c | 2 +- gdb/features/i386/64bit-core.c | 1 - gdb/features/i386/64bit-mpx.c | 2 +- gdb/features/i386/64bit-sse.c | 2 +- gdb/features/i386/x32-core.c | 1 - gdb/features/or1k.c | 1 - gdb/features/rs6000/powerpc-7400.c | 2 +- gdb/features/rs6000/powerpc-altivec32.c | 2 +- gdb/features/rs6000/powerpc-altivec32l.c | 2 +- gdb/features/rs6000/powerpc-altivec64.c | 2 +- gdb/features/rs6000/powerpc-altivec64l.c | 2 +- gdb/features/rs6000/powerpc-cell32l.c | 2 +- gdb/features/rs6000/powerpc-cell64l.c | 2 +- gdb/features/rs6000/powerpc-isa205-altivec32l.c | 2 +- gdb/features/rs6000/powerpc-isa205-altivec64l.c | 2 +- gdb/features/rs6000/powerpc-isa205-vsx32l.c | 2 +- gdb/features/rs6000/powerpc-isa205-vsx64l.c | 2 +- gdb/features/rs6000/powerpc-vsx32.c | 2 +- gdb/features/rs6000/powerpc-vsx32l.c | 2 +- gdb/features/rs6000/powerpc-vsx64.c | 2 +- gdb/features/rs6000/powerpc-vsx64l.c | 2 +- gdb/features/s390-gs-linux64.c | 2 +- gdb/features/s390-tevx-linux64.c | 2 +- gdb/features/s390-vx-linux64.c | 2 +- gdb/features/s390x-gs-linux64.c | 2 +- gdb/features/s390x-tevx-linux64.c | 2 +- gdb/features/s390x-vx-linux64.c | 2 +- gdb/target-descriptions.c | 38 ++++++++++++++----------- 36 files changed, 50 insertions(+), 51 deletions(-) diff --git a/gdb/features/aarch64-core.c b/gdb/features/aarch64-core.c index 618a7ef..3707b7e 100644 --- a/gdb/features/aarch64-core.c +++ b/gdb/features/aarch64-core.c @@ -10,7 +10,6 @@ create_feature_aarch64_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.core", "aarch64-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "cpsr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SP"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/aarch64-fpu.c b/gdb/features/aarch64-fpu.c index 7328eb1..cac3981 100644 --- a/gdb/features/aarch64-fpu.c +++ b/gdb/features/aarch64-fpu.c @@ -47,8 +47,8 @@ create_feature_aarch64_fpu (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v1i", element_type, 1); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vnd"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v2d"); tdesc_add_field (type_with_fields, "f", field_type); field_type = tdesc_named_type (feature, "v2u"); diff --git a/gdb/features/arc-arcompact.c b/gdb/features/arc-arcompact.c index 79b6889..f81f0a2 100644 --- a/gdb/features/arc-arcompact.c +++ b/gdb/features/arc-arcompact.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_arcompact (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 2); diff --git a/gdb/features/arc-v2.c b/gdb/features/arc-v2.c index 9908b4c..b2254b2 100644 --- a/gdb/features/arc-v2.c +++ b/gdb/features/arc-v2.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_v2 (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 4); diff --git a/gdb/features/arm/arm-with-iwmmxt.c b/gdb/features/arm/arm-with-iwmmxt.c index 5d6c357..8729285 100644 --- a/gdb/features/arm/arm-with-iwmmxt.c +++ b/gdb/features/arm/arm-with-iwmmxt.c @@ -45,8 +45,8 @@ initialize_tdesc_arm_with_iwmmxt (void) tdesc_create_vector (feature, "iwmmxt_v2u32", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "iwmmxt_vec64i"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "iwmmxt_v8u8"); tdesc_add_field (type_with_fields, "u8", field_type); field_type = tdesc_named_type (feature, "iwmmxt_v4u16"); diff --git a/gdb/features/i386/32bit-core.c b/gdb/features/i386/32bit-core.c index de2ce47..294e86d 100644 --- a/gdb/features/i386/32bit-core.c +++ b/gdb/features/i386/32bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_32bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "32bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/32bit-mpx.c b/gdb/features/i386/32bit-mpx.c index 38910d3..8f1be3a 100644 --- a/gdb/features/i386/32bit-mpx.c +++ b/gdb/features/i386/32bit-mpx.c @@ -10,8 +10,8 @@ create_feature_i386_32bit_mpx (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx", "32bit-mpx.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_struct (feature, "br128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint64"); tdesc_add_field (type_with_fields, "lbound", field_type); field_type = tdesc_named_type (feature, "uint64"); diff --git a/gdb/features/i386/32bit-sse.c b/gdb/features/i386/32bit-sse.c index 1c8a7e8..cf48960 100644 --- a/gdb/features/i386/32bit-sse.c +++ b/gdb/features/i386/32bit-sse.c @@ -29,8 +29,8 @@ create_feature_i386_32bit_sse (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/64bit-avx512.c b/gdb/features/i386/64bit-avx512.c index a565f42..e103e43 100644 --- a/gdb/features/i386/64bit-avx512.c +++ b/gdb/features/i386/64bit-avx512.c @@ -29,8 +29,8 @@ create_feature_i386_64bit_avx512 (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/64bit-core.c b/gdb/features/i386/64bit-core.c index f4cad06..9e39ee4 100644 --- a/gdb/features/i386/64bit-core.c +++ b/gdb/features/i386/64bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_64bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "64bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/64bit-mpx.c b/gdb/features/i386/64bit-mpx.c index f8730b4..725e76a 100644 --- a/gdb/features/i386/64bit-mpx.c +++ b/gdb/features/i386/64bit-mpx.c @@ -10,8 +10,8 @@ create_feature_i386_64bit_mpx (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx", "64bit-mpx.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_struct (feature, "br128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint64"); tdesc_add_field (type_with_fields, "lbound", field_type); field_type = tdesc_named_type (feature, "uint64"); diff --git a/gdb/features/i386/64bit-sse.c b/gdb/features/i386/64bit-sse.c index e4f99c2..2859217 100644 --- a/gdb/features/i386/64bit-sse.c +++ b/gdb/features/i386/64bit-sse.c @@ -29,8 +29,8 @@ create_feature_i386_64bit_sse (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/x32-core.c b/gdb/features/i386/x32-core.c index acafc7d..c268e11 100644 --- a/gdb/features/i386/x32-core.c +++ b/gdb/features/i386/x32-core.c @@ -10,7 +10,6 @@ create_feature_i386_x32_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "x32-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/or1k.c b/gdb/features/or1k.c index 929a5f9..9169cae 100644 --- a/gdb/features/or1k.c +++ b/gdb/features/or1k.c @@ -16,7 +16,6 @@ initialize_tdesc_or1k (void) feature = tdesc_create_feature (result, "org.gnu.gdb.or1k.group0"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "sr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SM"); tdesc_add_flag (type_with_fields, 1, "TEE"); diff --git a/gdb/features/rs6000/powerpc-7400.c b/gdb/features/rs6000/powerpc-7400.c index ba9f12c..58f8a69 100644 --- a/gdb/features/rs6000/powerpc-7400.c +++ b/gdb/features/rs6000/powerpc-7400.c @@ -152,8 +152,8 @@ initialize_tdesc_powerpc_7400 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec32.c b/gdb/features/rs6000/powerpc-altivec32.c index 9cb83ca..bbb36c8 100644 --- a/gdb/features/rs6000/powerpc-altivec32.c +++ b/gdb/features/rs6000/powerpc-altivec32.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_altivec32 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec32l.c b/gdb/features/rs6000/powerpc-altivec32l.c index afaf8ed..81862cb 100644 --- a/gdb/features/rs6000/powerpc-altivec32l.c +++ b/gdb/features/rs6000/powerpc-altivec32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_altivec32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec64.c b/gdb/features/rs6000/powerpc-altivec64.c index 94041e1..f7a7c72 100644 --- a/gdb/features/rs6000/powerpc-altivec64.c +++ b/gdb/features/rs6000/powerpc-altivec64.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_altivec64 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec64l.c b/gdb/features/rs6000/powerpc-altivec64l.c index c7ed171..ce0bc86 100644 --- a/gdb/features/rs6000/powerpc-altivec64l.c +++ b/gdb/features/rs6000/powerpc-altivec64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_altivec64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-cell32l.c b/gdb/features/rs6000/powerpc-cell32l.c index 390d7b2..74c42f9 100644 --- a/gdb/features/rs6000/powerpc-cell32l.c +++ b/gdb/features/rs6000/powerpc-cell32l.c @@ -110,8 +110,8 @@ initialize_tdesc_powerpc_cell32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-cell64l.c b/gdb/features/rs6000/powerpc-cell64l.c index 39890ba..cbfda4c 100644 --- a/gdb/features/rs6000/powerpc-cell64l.c +++ b/gdb/features/rs6000/powerpc-cell64l.c @@ -110,8 +110,8 @@ initialize_tdesc_powerpc_cell64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-altivec32l.c b/gdb/features/rs6000/powerpc-isa205-altivec32l.c index 203bb4a..09f5c07 100644 --- a/gdb/features/rs6000/powerpc-isa205-altivec32l.c +++ b/gdb/features/rs6000/powerpc-isa205-altivec32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_altivec32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-altivec64l.c b/gdb/features/rs6000/powerpc-isa205-altivec64l.c index 8f66a16..246fcef 100644 --- a/gdb/features/rs6000/powerpc-isa205-altivec64l.c +++ b/gdb/features/rs6000/powerpc-isa205-altivec64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_altivec64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-vsx32l.c b/gdb/features/rs6000/powerpc-isa205-vsx32l.c index fc0f615..2a6e232 100644 --- a/gdb/features/rs6000/powerpc-isa205-vsx32l.c +++ b/gdb/features/rs6000/powerpc-isa205-vsx32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_vsx32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-vsx64l.c b/gdb/features/rs6000/powerpc-isa205-vsx64l.c index 3313d04..d0e32f2 100644 --- a/gdb/features/rs6000/powerpc-isa205-vsx64l.c +++ b/gdb/features/rs6000/powerpc-isa205-vsx64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_vsx64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx32.c b/gdb/features/rs6000/powerpc-vsx32.c index 1a824a8..9eafb1c 100644 --- a/gdb/features/rs6000/powerpc-vsx32.c +++ b/gdb/features/rs6000/powerpc-vsx32.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_vsx32 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx32l.c b/gdb/features/rs6000/powerpc-vsx32l.c index f5bf11e..f08df14 100644 --- a/gdb/features/rs6000/powerpc-vsx32l.c +++ b/gdb/features/rs6000/powerpc-vsx32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_vsx32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx64.c b/gdb/features/rs6000/powerpc-vsx64.c index 601df39..7991115 100644 --- a/gdb/features/rs6000/powerpc-vsx64.c +++ b/gdb/features/rs6000/powerpc-vsx64.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_vsx64 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx64l.c b/gdb/features/rs6000/powerpc-vsx64l.c index d34bd81..1726e67 100644 --- a/gdb/features/rs6000/powerpc-vsx64l.c +++ b/gdb/features/rs6000/powerpc-vsx64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_vsx64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/s390-gs-linux64.c b/gdb/features/s390-gs-linux64.c index 126835b..1416183 100644 --- a/gdb/features/s390-gs-linux64.c +++ b/gdb/features/s390-gs-linux64.c @@ -135,8 +135,8 @@ initialize_tdesc_s390_gs_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390-tevx-linux64.c b/gdb/features/s390-tevx-linux64.c index a9ee9e1..ae62e8d 100644 --- a/gdb/features/s390-tevx-linux64.c +++ b/gdb/features/s390-tevx-linux64.c @@ -135,8 +135,8 @@ initialize_tdesc_s390_tevx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390-vx-linux64.c b/gdb/features/s390-vx-linux64.c index b6c5dda..d3ec081 100644 --- a/gdb/features/s390-vx-linux64.c +++ b/gdb/features/s390-vx-linux64.c @@ -113,8 +113,8 @@ initialize_tdesc_s390_vx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-gs-linux64.c b/gdb/features/s390x-gs-linux64.c index 5ab3e3d..d253a09 100644 --- a/gdb/features/s390x-gs-linux64.c +++ b/gdb/features/s390x-gs-linux64.c @@ -119,8 +119,8 @@ initialize_tdesc_s390x_gs_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-tevx-linux64.c b/gdb/features/s390x-tevx-linux64.c index e5ecedf..1ac3249 100644 --- a/gdb/features/s390x-tevx-linux64.c +++ b/gdb/features/s390x-tevx-linux64.c @@ -119,8 +119,8 @@ initialize_tdesc_s390x_tevx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-vx-linux64.c b/gdb/features/s390x-vx-linux64.c index 1f24349..2e3d382 100644 --- a/gdb/features/s390x-vx-linux64.c +++ b/gdb/features/s390x-vx-linux64.c @@ -97,8 +97,8 @@ initialize_tdesc_s390x_vx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 88ac55f..85f0138 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -1894,13 +1894,6 @@ public: m_printed_type_with_fields = true; } - if (!type->fields.empty () - && !m_printed_field_type) - { - printf_unfiltered (" tdesc_type *field_type;\n"); - m_printed_field_type = true; - } - switch (type->kind) { case TDESC_TYPE_STRUCT: @@ -1949,8 +1942,8 @@ public: } else { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", type_name); printf_unfiltered (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," @@ -1962,10 +1955,8 @@ public: { gdb_assert (f.end == -1); gdb_assert (type->kind == TDESC_TYPE_STRUCT); - printf_unfiltered - (" field_type = tdesc_named_type (feature," - " \"%s\");\n", - type_name); + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", type_name); printf_unfiltered (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); @@ -1978,9 +1969,8 @@ public: type->name.c_str ()); for (const tdesc_type_field &f : type->fields) { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", - f.type->name.c_str ()); + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); printf_unfiltered (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); @@ -2018,6 +2008,22 @@ protected: std::string m_filename_after_features; private: + void printf_field_type_assignment (const char *fmt, ...) + { + if (!m_printed_field_type) + { + printf_unfiltered (" tdesc_type *field_type;\n"); + m_printed_field_type = true; + } + + printf_unfiltered (" field_type = "); + + va_list args; + va_start (args, fmt); + vprintf_unfiltered (fmt, args); + va_end (args); + } + char *m_function; /* Did we print "struct tdesc_type *element_type;" yet? */ -- 2.7.4 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" 2017-12-19 20:16 ` Simon Marchi @ 2017-12-19 20:51 ` Sergio Durigan Junior 2017-12-21 9:10 ` Yao Qi 1 sibling, 0 replies; 5+ messages in thread From: Sergio Durigan Junior @ 2017-12-19 20:51 UTC (permalink / raw) To: Simon Marchi; +Cc: GDB Patches On Tuesday, December 19 2017, Simon Marchi wrote: > On 2017-12-19 02:18 PM, Sergio Durigan Junior wrote: >> While fiddling a bit with -Wunused-variable, I noticed that "maint >> print c-tdesc" was always generating code for the >> "tdesc_type *field_type" variable, even when it wasn't used. This is >> caught by GCC when using -Wunused-variable, of course. So I modified >> the "print_c_tdesc" class to check whether "field_type" will be needed >> or not. >> >> In order to do the check, I basically copied the logic implemented on >> "void visit (const tdesc_type_with_fields *type)", specifically the >> "switch" part, and simplified it to determine which types need >> "field_type". It's on a new simple function called >> "need_field_type". Then, we can simply call this function when >> deciding whether to print "field_type", and that's it. >> >> I've also regenerated all the C files under gdb/features/, and as >> expected only those that don't need "field_type" were modified. > > I fiddled with this when I made my series about C++ifying tdesc, but removed it > from the series since I thought it wasn't that important. I'm not against fixing > it though. I think it would be nice if we used > "-Wunused-variable -Wno-error=unused-variable", in which case your patch would > avoid some warnings/noise. > > However, I don't really like the fact that this approach duplicates the logic. > A simpler way would be to emit the field lazily when we actually need it, see patch > below for an example. There's a bit more collateral damage in the generated files, > since some declarations change place. We would need to do the same for the other > variable declarations. Yeah, TBH I wasn't entirely happy with duplicating the logic, but I thought it'd be OK because it's a small function anyway. Having said that, I think your solution is good. Yet another solution that I thought would be to make a "visit_1" function that generates the entire text to be printf_unfiltered'd, along with a boolean signaling whether "field_type" was needed. Then, visit_1's caller would emit "field_type" as needed, and print the string returned by visit_1. > Another solution I thought of would be to use a new scope every time we have an > assignment and declare the variable in each scope. For example, this > > tdesc_type_with_fields *type_with_fields; > type_with_fields = tdesc_create_union (feature, "vec128"); > tdesc_type *field_type; > field_type = tdesc_named_type (feature, "v4f"); > tdesc_add_field (type_with_fields, "v4_float", field_type); > field_type = tdesc_named_type (feature, "v2d"); > tdesc_add_field (type_with_fields, "v2_double", field_type); > field_type = tdesc_named_type (feature, "v16i8"); > tdesc_add_field (type_with_fields, "v16_int8", field_type); > field_type = tdesc_named_type (feature, "v8i16"); > tdesc_add_field (type_with_fields, "v8_int16", field_type); > field_type = tdesc_named_type (feature, "v4i32"); > tdesc_add_field (type_with_fields, "v4_int32", field_type); > field_type = tdesc_named_type (feature, "v2i64"); > tdesc_add_field (type_with_fields, "v2_int64", field_type); > field_type = tdesc_named_type (feature, "uint128"); > tdesc_add_field (type_with_fields, "uint128", field_type); > > would become > > { > tdesc_type_with_fields *type_with_fields = tdesc_create_union (feature, "vec128"); > { > tdesc_type *field_type = tdesc_named_type (feature, "v4f"); > tdesc_add_field (type_with_fields, "v4_float", field_type); > } > { > tdesc_type *field_type = tdesc_named_type (feature, "v2d"); > tdesc_add_field (type_with_fields, "v2_double", field_type); > } > ... > } > > That should avoid the need to any logic to track which variables have > been declared. It would make the generated code a bit more verbose, > but I don't think it matters. IMHO it'd not be ideal to introduce more syntax (which can ultimately lead to difficulties understanding the code flow) just to avoid silencing a warning. I think your solution below addresses this problem just fine. I'm attaching the patch I mentioned above here, in case you want to go with it. But as I said, your approach is OK too. Thanks, -- Sergio GPG key ID: 237A 54B1 0287 28BF 00EF 31F4 D0EB 7628 65FC 5E36 Please send encrypted e-mail if possible http://sergiodj.net/ From 9ee58633a45961f72eff233509f4b6d34b1e2399 Mon Sep 17 00:00:00 2001 From: Sergio Durigan Junior <sergiodj@redhat.com> Date: Tue, 19 Dec 2017 14:00:08 -0500 Subject: [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" While fiddling a bit with -Wunused-variable, I noticed that "maint print c-tdesc" was always generating code for the "tdesc_type *field_type" variable, even when it wasn't used. This is caught by GCC when using -Wunused-variable, of course. So I modified the "print_c_tdesc" class to check whether "field_type" will be needed or not. I've also regenerated all the C files under gdb/features/, and as expected only those that don't need "field_type" were modified. yyyy-mm-dd Sergio Durigan Junior <sergiodj@redhat.com> * features/aarch64-core.c: Regenerate. * features/arc-arcompact.c: Regenerate. * features/arc-v2.c: Regenerate. * features/i386/32bit-core.c: Regenerate. * features/i386/64bit-core.c: Regenerate. * features/i386/x32-core.c: Regenerate. * features/or1k.c: Regenerate. * target-descriptions.c (class print_c_tdesc) <visit_1>: New method. --- gdb/features/aarch64-core.c | 1 - gdb/features/arc-arcompact.c | 1 - gdb/features/arc-v2.c | 1 - gdb/features/i386/32bit-core.c | 1 - gdb/features/i386/64bit-core.c | 1 - gdb/features/i386/x32-core.c | 1 - gdb/features/or1k.c | 1 - gdb/target-descriptions.c | 127 ++++++++++++++++++++++++++--------------- 8 files changed, 80 insertions(+), 54 deletions(-) diff --git a/gdb/features/aarch64-core.c b/gdb/features/aarch64-core.c index 618a7ef787..3707b7e055 100644 --- a/gdb/features/aarch64-core.c +++ b/gdb/features/aarch64-core.c @@ -10,7 +10,6 @@ create_feature_aarch64_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.core", "aarch64-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "cpsr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SP"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/arc-arcompact.c b/gdb/features/arc-arcompact.c index 79b6889172..f81f0a26ba 100644 --- a/gdb/features/arc-arcompact.c +++ b/gdb/features/arc-arcompact.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_arcompact (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 2); diff --git a/gdb/features/arc-v2.c b/gdb/features/arc-v2.c index 9908b4c5ec..b2254b293c 100644 --- a/gdb/features/arc-v2.c +++ b/gdb/features/arc-v2.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_v2 (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 4); diff --git a/gdb/features/i386/32bit-core.c b/gdb/features/i386/32bit-core.c index de2ce474d5..294e86d81e 100644 --- a/gdb/features/i386/32bit-core.c +++ b/gdb/features/i386/32bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_32bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "32bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/64bit-core.c b/gdb/features/i386/64bit-core.c index f4cad06e66..9e39ee42d9 100644 --- a/gdb/features/i386/64bit-core.c +++ b/gdb/features/i386/64bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_64bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "64bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/x32-core.c b/gdb/features/i386/x32-core.c index acafc7dace..c268e11bea 100644 --- a/gdb/features/i386/x32-core.c +++ b/gdb/features/i386/x32-core.c @@ -10,7 +10,6 @@ create_feature_i386_x32_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "x32-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/or1k.c b/gdb/features/or1k.c index 929a5f9208..9169cae940 100644 --- a/gdb/features/or1k.c +++ b/gdb/features/or1k.c @@ -16,7 +16,6 @@ initialize_tdesc_or1k (void) feature = tdesc_create_feature (result, "org.gnu.gdb.or1k.group0"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "sr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SM"); tdesc_add_flag (type_with_fields, 1, "TEE"); diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 88ac55f404..0316a7fcc5 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -1888,36 +1888,73 @@ public: void visit (const tdesc_type_with_fields *type) override { + bool need_field_type; + if (!m_printed_type_with_fields) { printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); m_printed_type_with_fields = true; } + std::string text = visit_1 (type, &need_field_type); + if (!type->fields.empty () - && !m_printed_field_type) + && !m_printed_field_type + && need_field_type) { printf_unfiltered (" tdesc_type *field_type;\n"); m_printed_field_type = true; } + printf_unfiltered ("%s", text.c_str ()); + + printf_unfiltered ("\n"); + } + + void visit (const tdesc_reg *reg) override + { + printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", + reg->name.c_str (), reg->target_regnum, + reg->save_restore); + if (!reg->group.empty ()) + printf_unfiltered ("\"%s\", ", reg->group.c_str ()); + else + printf_unfiltered ("NULL, "); + printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); + } + +protected: + std::string m_filename_after_features; + +private: + std::string visit_1 (const tdesc_type_with_fields *type, + bool *need_field_type) + { + std::string ret; + + *need_field_type = false; + switch (type->kind) { case TDESC_TYPE_STRUCT: case TDESC_TYPE_FLAGS: if (type->kind == TDESC_TYPE_STRUCT) { - printf_unfiltered - (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", + string_appendf + (ret, + " type_with_fields = tdesc_create_struct (feature, \"%s\");\n", type->name.c_str ()); if (type->size != 0) - printf_unfiltered - (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); + string_appendf + (ret, + " tdesc_set_struct_size (type_with_fields, %d);\n", + type->size); } else { - printf_unfiltered - (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", + string_appendf + (ret, + " type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", type->name.c_str (), type->size); } for (const tdesc_type_field &f : type->fields) @@ -1935,25 +1972,30 @@ public: if (f.type->kind == TDESC_TYPE_BOOL) { gdb_assert (f.start == f.end); - printf_unfiltered - (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", + string_appendf + (ret, + " tdesc_add_flag (type_with_fields, %d, \"%s\");\n", f.start, f.name.c_str ()); } else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) || (type->size == 8 && f.type->kind == TDESC_TYPE_UINT64)) { - printf_unfiltered - (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", + string_appendf + (ret, + " tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", f.name.c_str (), f.start, f.end); } else { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", + *need_field_type = true; + string_appendf + (ret, + " field_type = tdesc_named_type (feature, \"%s\");\n", type_name); - printf_unfiltered - (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," + string_appendf + (ret, + " tdesc_add_typed_bitfield (type_with_fields, \"%s\"," " %d, %d, field_type);\n", f.name.c_str (), f.start, f.end); } @@ -1962,62 +2004,53 @@ public: { gdb_assert (f.end == -1); gdb_assert (type->kind == TDESC_TYPE_STRUCT); - printf_unfiltered - (" field_type = tdesc_named_type (feature," + *need_field_type = true; + string_appendf + (ret, " field_type = tdesc_named_type (feature," " \"%s\");\n", type_name); - printf_unfiltered - (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", + string_appendf + (ret, + " tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); } } break; case TDESC_TYPE_UNION: - printf_unfiltered - (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", + string_appendf + (ret, + " type_with_fields = tdesc_create_union (feature, \"%s\");\n", type->name.c_str ()); + *need_field_type = true; for (const tdesc_type_field &f : type->fields) { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", + string_appendf + (ret, + " field_type = tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); - printf_unfiltered - (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", + string_appendf + (ret, + " tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); } break; case TDESC_TYPE_ENUM: - printf_unfiltered - (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", + string_appendf + (ret, + " type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", type->name.c_str (), type->size); for (const tdesc_type_field &f : type->fields) - printf_unfiltered - (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", + string_appendf + (ret, + " tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", f.start, f.name.c_str ()); break; default: error (_("C output is not supported type \"%s\"."), type->name.c_str ()); } - - printf_unfiltered ("\n"); - } - - void visit (const tdesc_reg *reg) override - { - printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", - reg->name.c_str (), reg->target_regnum, - reg->save_restore); - if (!reg->group.empty ()) - printf_unfiltered ("\"%s\", ", reg->group.c_str ()); - else - printf_unfiltered ("NULL, "); - printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); + return ret; } -protected: - std::string m_filename_after_features; - -private: char *m_function; /* Did we print "struct tdesc_type *element_type;" yet? */ -- 2.14.3 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" 2017-12-19 20:16 ` Simon Marchi 2017-12-19 20:51 ` Sergio Durigan Junior @ 2017-12-21 9:10 ` Yao Qi 2017-12-21 23:24 ` Simon Marchi 1 sibling, 1 reply; 5+ messages in thread From: Yao Qi @ 2017-12-21 9:10 UTC (permalink / raw) To: Simon Marchi; +Cc: Sergio Durigan Junior, GDB Patches Simon Marchi <simon.marchi@ericsson.com> writes: > A simpler way would be to emit the field lazily when we actually need it, see patch > below for an example. There's a bit more collateral damage in the generated files, > since some declarations change place. We would need to do the same for the other > variable declarations. Yes, your patch in target-descriptions.c is simpler. The patch is good to me. -- Yao (齐尧) ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" 2017-12-21 9:10 ` Yao Qi @ 2017-12-21 23:24 ` Simon Marchi 0 siblings, 0 replies; 5+ messages in thread From: Simon Marchi @ 2017-12-21 23:24 UTC (permalink / raw) To: Yao Qi; +Cc: Sergio Durigan Junior, GDB Patches On 2017-12-21 04:10 AM, Yao Qi wrote: > Simon Marchi <simon.marchi@ericsson.com> writes: > >> A simpler way would be to emit the field lazily when we actually need it, see patch >> below for an example. There's a bit more collateral damage in the generated files, >> since some declarations change place. We would need to do the same for the other >> variable declarations. > > Yes, your patch in target-descriptions.c is simpler. The patch is good > to me. > Thanks, here's what I pushed. From a8d2e5856f87a658d69018fe1ccd56482eebdd59 Mon Sep 17 00:00:00 2001 From: Simon Marchi <simon.marchi@ericsson.com> Date: Thu, 21 Dec 2017 18:19:17 -0500 Subject: [PATCH] Do not emit "field_type" var if not needed on "maint print c-tdesc" While fiddling a bit with -Wunused-variable, Sergio noticed that "maint print c-tdesc" was always generating code for the "tdesc_type *field_type" variable, even when it wasn't used. This is caught by GCC when using -Wunused-variable, of course. This patch changes the print_c_tdesc class to only output the field declaration when we actually need it. It shouldn't be necessary to do the same with the other variable declarations (type_with_fields and element_type), because they are always if they are declared. The C files in features/ are regenerated, some declarations of field_type are removed, as expected, while some others move to where they are used for the first time. gdb/ChangeLog: * target-descriptions.c (print_c_tdesc) <visit>: Don't output field_type declaration, use printf_field_type_assignment instead. <printf_field_type_assignment>: New method. * features/aarch64-core.c, features/aarch64-fpu.c features/arc-arcompact.c, features/arc-v2.c, features/arm/arm-with-iwmmxt.c, features/i386/32bit-core.c, features/i386/32bit-mpx.c, features/i386/32bit-sse.c, features/i386/64bit-avx512.c, features/i386/64bit-core.c, features/i386/64bit-mpx.c, features/i386/64bit-sse.c, features/i386/x32-core.c, features/or1k.c, features/rs6000/powerpc-7400.c, features/rs6000/powerpc-altivec32.c, features/rs6000/powerpc-altivec32l.c, features/rs6000/powerpc-altivec64.c, features/rs6000/powerpc-altivec64l.c, features/rs6000/powerpc-cell32l.c, features/rs6000/powerpc-cell64l.c, features/rs6000/powerpc-isa205-altivec32l.c, features/rs6000/powerpc-isa205-altivec64l.c, features/rs6000/powerpc-isa205-vsx32l.c, features/rs6000/powerpc-isa205-vsx64l.c, features/rs6000/powerpc-vsx32.c, features/rs6000/powerpc-vsx32l.c, features/rs6000/powerpc-vsx64.c, features/rs6000/powerpc-vsx64l.c, features/s390-gs-linux64.c, features/s390-tevx-linux64.c, features/s390-vx-linux64.c, features/s390x-gs-linux64.c, features/s390x-tevx-linux64.c, features/s390x-vx-linux64.c: Re-generate. --- gdb/ChangeLog | 33 ++++++++++++++++++++ gdb/features/aarch64-core.c | 1 - gdb/features/aarch64-fpu.c | 2 +- gdb/features/arc-arcompact.c | 1 - gdb/features/arc-v2.c | 1 - gdb/features/arm/arm-with-iwmmxt.c | 2 +- gdb/features/i386/32bit-core.c | 1 - gdb/features/i386/32bit-mpx.c | 2 +- gdb/features/i386/32bit-sse.c | 2 +- gdb/features/i386/64bit-avx512.c | 2 +- gdb/features/i386/64bit-core.c | 1 - gdb/features/i386/64bit-mpx.c | 2 +- gdb/features/i386/64bit-sse.c | 2 +- gdb/features/i386/x32-core.c | 1 - gdb/features/or1k.c | 1 - gdb/features/rs6000/powerpc-7400.c | 2 +- gdb/features/rs6000/powerpc-altivec32.c | 2 +- gdb/features/rs6000/powerpc-altivec32l.c | 2 +- gdb/features/rs6000/powerpc-altivec64.c | 2 +- gdb/features/rs6000/powerpc-altivec64l.c | 2 +- gdb/features/rs6000/powerpc-cell32l.c | 2 +- gdb/features/rs6000/powerpc-cell64l.c | 2 +- gdb/features/rs6000/powerpc-isa205-altivec32l.c | 2 +- gdb/features/rs6000/powerpc-isa205-altivec64l.c | 2 +- gdb/features/rs6000/powerpc-isa205-vsx32l.c | 2 +- gdb/features/rs6000/powerpc-isa205-vsx64l.c | 2 +- gdb/features/rs6000/powerpc-vsx32.c | 2 +- gdb/features/rs6000/powerpc-vsx32l.c | 2 +- gdb/features/rs6000/powerpc-vsx64.c | 2 +- gdb/features/rs6000/powerpc-vsx64l.c | 2 +- gdb/features/s390-gs-linux64.c | 2 +- gdb/features/s390-tevx-linux64.c | 2 +- gdb/features/s390-vx-linux64.c | 2 +- gdb/features/s390x-gs-linux64.c | 2 +- gdb/features/s390x-tevx-linux64.c | 2 +- gdb/features/s390x-vx-linux64.c | 2 +- gdb/target-descriptions.c | 41 +++++++++++++++---------- 37 files changed, 86 insertions(+), 51 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 4f2c5c3..1b4b13a 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,36 @@ +2017-12-21 Simon Marchi <simon.marchi@ericsson.com> + Sergio Durigan Junior <sergiodj@redhat.com> + + * target-descriptions.c (print_c_tdesc) <visit>: Don't output + field_type declaration, use printf_field_type_assignment + instead. + <printf_field_type_assignment>: New method. + * features/aarch64-core.c, features/aarch64-fpu.c + features/arc-arcompact.c, features/arc-v2.c, + features/arm/arm-with-iwmmxt.c, features/i386/32bit-core.c, + features/i386/32bit-mpx.c, features/i386/32bit-sse.c, + features/i386/64bit-avx512.c, features/i386/64bit-core.c, + features/i386/64bit-mpx.c, features/i386/64bit-sse.c, + features/i386/x32-core.c, features/or1k.c, + features/rs6000/powerpc-7400.c, + features/rs6000/powerpc-altivec32.c, + features/rs6000/powerpc-altivec32l.c, + features/rs6000/powerpc-altivec64.c, + features/rs6000/powerpc-altivec64l.c, + features/rs6000/powerpc-cell32l.c, + features/rs6000/powerpc-cell64l.c, + features/rs6000/powerpc-isa205-altivec32l.c, + features/rs6000/powerpc-isa205-altivec64l.c, + features/rs6000/powerpc-isa205-vsx32l.c, + features/rs6000/powerpc-isa205-vsx64l.c, + features/rs6000/powerpc-vsx32.c, + features/rs6000/powerpc-vsx32l.c, + features/rs6000/powerpc-vsx64.c, + features/rs6000/powerpc-vsx64l.c, features/s390-gs-linux64.c, + features/s390-tevx-linux64.c, features/s390-vx-linux64.c, + features/s390x-gs-linux64.c, features/s390x-tevx-linux64.c, + features/s390x-vx-linux64.c: Re-generate. + 2017-12-20 Uros Bizjak <ubizjak@gmail.com> * rs6000-tdep.c (ppc_deal_with_atomic_sequence): Remove diff --git a/gdb/features/aarch64-core.c b/gdb/features/aarch64-core.c index 618a7ef..3707b7e 100644 --- a/gdb/features/aarch64-core.c +++ b/gdb/features/aarch64-core.c @@ -10,7 +10,6 @@ create_feature_aarch64_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.core", "aarch64-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "cpsr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SP"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/aarch64-fpu.c b/gdb/features/aarch64-fpu.c index 7328eb1..cac3981 100644 --- a/gdb/features/aarch64-fpu.c +++ b/gdb/features/aarch64-fpu.c @@ -47,8 +47,8 @@ create_feature_aarch64_fpu (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v1i", element_type, 1); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vnd"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v2d"); tdesc_add_field (type_with_fields, "f", field_type); field_type = tdesc_named_type (feature, "v2u"); diff --git a/gdb/features/arc-arcompact.c b/gdb/features/arc-arcompact.c index 79b6889..f81f0a2 100644 --- a/gdb/features/arc-arcompact.c +++ b/gdb/features/arc-arcompact.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_arcompact (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 2); diff --git a/gdb/features/arc-v2.c b/gdb/features/arc-v2.c index 9908b4c..b2254b2 100644 --- a/gdb/features/arc-v2.c +++ b/gdb/features/arc-v2.c @@ -52,7 +52,6 @@ initialize_tdesc_arc_v2 (void) feature = tdesc_create_feature (result, "org.gnu.gdb.arc.aux-minimal"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "status32_type", 4); tdesc_add_flag (type_with_fields, 0, "H"); tdesc_add_bitfield (type_with_fields, "E", 1, 4); diff --git a/gdb/features/arm/arm-with-iwmmxt.c b/gdb/features/arm/arm-with-iwmmxt.c index 5d6c357..8729285 100644 --- a/gdb/features/arm/arm-with-iwmmxt.c +++ b/gdb/features/arm/arm-with-iwmmxt.c @@ -45,8 +45,8 @@ initialize_tdesc_arm_with_iwmmxt (void) tdesc_create_vector (feature, "iwmmxt_v2u32", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "iwmmxt_vec64i"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "iwmmxt_v8u8"); tdesc_add_field (type_with_fields, "u8", field_type); field_type = tdesc_named_type (feature, "iwmmxt_v4u16"); diff --git a/gdb/features/i386/32bit-core.c b/gdb/features/i386/32bit-core.c index de2ce47..294e86d 100644 --- a/gdb/features/i386/32bit-core.c +++ b/gdb/features/i386/32bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_32bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "32bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/32bit-mpx.c b/gdb/features/i386/32bit-mpx.c index 38910d3..8f1be3a 100644 --- a/gdb/features/i386/32bit-mpx.c +++ b/gdb/features/i386/32bit-mpx.c @@ -10,8 +10,8 @@ create_feature_i386_32bit_mpx (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx", "32bit-mpx.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_struct (feature, "br128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint64"); tdesc_add_field (type_with_fields, "lbound", field_type); field_type = tdesc_named_type (feature, "uint64"); diff --git a/gdb/features/i386/32bit-sse.c b/gdb/features/i386/32bit-sse.c index 1c8a7e8..cf48960 100644 --- a/gdb/features/i386/32bit-sse.c +++ b/gdb/features/i386/32bit-sse.c @@ -29,8 +29,8 @@ create_feature_i386_32bit_sse (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/64bit-avx512.c b/gdb/features/i386/64bit-avx512.c index a565f42..e103e43 100644 --- a/gdb/features/i386/64bit-avx512.c +++ b/gdb/features/i386/64bit-avx512.c @@ -29,8 +29,8 @@ create_feature_i386_64bit_avx512 (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/64bit-core.c b/gdb/features/i386/64bit-core.c index f4cad06..9e39ee4 100644 --- a/gdb/features/i386/64bit-core.c +++ b/gdb/features/i386/64bit-core.c @@ -10,7 +10,6 @@ create_feature_i386_64bit_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "64bit-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/i386/64bit-mpx.c b/gdb/features/i386/64bit-mpx.c index f8730b4..725e76a 100644 --- a/gdb/features/i386/64bit-mpx.c +++ b/gdb/features/i386/64bit-mpx.c @@ -10,8 +10,8 @@ create_feature_i386_64bit_mpx (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.mpx", "64bit-mpx.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_struct (feature, "br128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint64"); tdesc_add_field (type_with_fields, "lbound", field_type); field_type = tdesc_named_type (feature, "uint64"); diff --git a/gdb/features/i386/64bit-sse.c b/gdb/features/i386/64bit-sse.c index e4f99c2..2859217 100644 --- a/gdb/features/i386/64bit-sse.c +++ b/gdb/features/i386/64bit-sse.c @@ -29,8 +29,8 @@ create_feature_i386_64bit_sse (struct target_desc *result, long regnum) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/i386/x32-core.c b/gdb/features/i386/x32-core.c index acafc7d..c268e11 100644 --- a/gdb/features/i386/x32-core.c +++ b/gdb/features/i386/x32-core.c @@ -10,7 +10,6 @@ create_feature_i386_x32_core (struct target_desc *result, long regnum) feature = tdesc_create_feature (result, "org.gnu.gdb.i386.core", "x32-core.xml"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "i386_eflags", 4); tdesc_add_flag (type_with_fields, 0, "CF"); tdesc_add_flag (type_with_fields, 1, ""); diff --git a/gdb/features/or1k.c b/gdb/features/or1k.c index 929a5f9..9169cae 100644 --- a/gdb/features/or1k.c +++ b/gdb/features/or1k.c @@ -16,7 +16,6 @@ initialize_tdesc_or1k (void) feature = tdesc_create_feature (result, "org.gnu.gdb.or1k.group0"); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_flags (feature, "sr_flags", 4); tdesc_add_flag (type_with_fields, 0, "SM"); tdesc_add_flag (type_with_fields, 1, "TEE"); diff --git a/gdb/features/rs6000/powerpc-7400.c b/gdb/features/rs6000/powerpc-7400.c index ba9f12c..58f8a69 100644 --- a/gdb/features/rs6000/powerpc-7400.c +++ b/gdb/features/rs6000/powerpc-7400.c @@ -152,8 +152,8 @@ initialize_tdesc_powerpc_7400 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec32.c b/gdb/features/rs6000/powerpc-altivec32.c index 9cb83ca..bbb36c8 100644 --- a/gdb/features/rs6000/powerpc-altivec32.c +++ b/gdb/features/rs6000/powerpc-altivec32.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_altivec32 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec32l.c b/gdb/features/rs6000/powerpc-altivec32l.c index afaf8ed..81862cb 100644 --- a/gdb/features/rs6000/powerpc-altivec32l.c +++ b/gdb/features/rs6000/powerpc-altivec32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_altivec32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec64.c b/gdb/features/rs6000/powerpc-altivec64.c index 94041e1..f7a7c72 100644 --- a/gdb/features/rs6000/powerpc-altivec64.c +++ b/gdb/features/rs6000/powerpc-altivec64.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_altivec64 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-altivec64l.c b/gdb/features/rs6000/powerpc-altivec64l.c index c7ed171..ce0bc86 100644 --- a/gdb/features/rs6000/powerpc-altivec64l.c +++ b/gdb/features/rs6000/powerpc-altivec64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_altivec64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-cell32l.c b/gdb/features/rs6000/powerpc-cell32l.c index 390d7b2..74c42f9 100644 --- a/gdb/features/rs6000/powerpc-cell32l.c +++ b/gdb/features/rs6000/powerpc-cell32l.c @@ -110,8 +110,8 @@ initialize_tdesc_powerpc_cell32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-cell64l.c b/gdb/features/rs6000/powerpc-cell64l.c index 39890ba..cbfda4c 100644 --- a/gdb/features/rs6000/powerpc-cell64l.c +++ b/gdb/features/rs6000/powerpc-cell64l.c @@ -110,8 +110,8 @@ initialize_tdesc_powerpc_cell64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-altivec32l.c b/gdb/features/rs6000/powerpc-isa205-altivec32l.c index 203bb4a..09f5c07 100644 --- a/gdb/features/rs6000/powerpc-isa205-altivec32l.c +++ b/gdb/features/rs6000/powerpc-isa205-altivec32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_altivec32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-altivec64l.c b/gdb/features/rs6000/powerpc-isa205-altivec64l.c index 8f66a16..246fcef 100644 --- a/gdb/features/rs6000/powerpc-isa205-altivec64l.c +++ b/gdb/features/rs6000/powerpc-isa205-altivec64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_altivec64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-vsx32l.c b/gdb/features/rs6000/powerpc-isa205-vsx32l.c index fc0f615..2a6e232 100644 --- a/gdb/features/rs6000/powerpc-isa205-vsx32l.c +++ b/gdb/features/rs6000/powerpc-isa205-vsx32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_vsx32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-isa205-vsx64l.c b/gdb/features/rs6000/powerpc-isa205-vsx64l.c index 3313d04..d0e32f2 100644 --- a/gdb/features/rs6000/powerpc-isa205-vsx64l.c +++ b/gdb/features/rs6000/powerpc-isa205-vsx64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_isa205_vsx64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx32.c b/gdb/features/rs6000/powerpc-vsx32.c index 1a824a8..9eafb1c 100644 --- a/gdb/features/rs6000/powerpc-vsx32.c +++ b/gdb/features/rs6000/powerpc-vsx32.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_vsx32 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx32l.c b/gdb/features/rs6000/powerpc-vsx32l.c index f5bf11e..f08df14 100644 --- a/gdb/features/rs6000/powerpc-vsx32l.c +++ b/gdb/features/rs6000/powerpc-vsx32l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_vsx32l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx64.c b/gdb/features/rs6000/powerpc-vsx64.c index 601df39..7991115 100644 --- a/gdb/features/rs6000/powerpc-vsx64.c +++ b/gdb/features/rs6000/powerpc-vsx64.c @@ -104,8 +104,8 @@ initialize_tdesc_powerpc_vsx64 (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/rs6000/powerpc-vsx64l.c b/gdb/features/rs6000/powerpc-vsx64l.c index d34bd81..1726e67 100644 --- a/gdb/features/rs6000/powerpc-vsx64l.c +++ b/gdb/features/rs6000/powerpc-vsx64l.c @@ -108,8 +108,8 @@ initialize_tdesc_powerpc_vsx64l (void) tdesc_create_vector (feature, "v16i8", element_type, 16); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "uint128"); tdesc_add_field (type_with_fields, "uint128", field_type); field_type = tdesc_named_type (feature, "v4f"); diff --git a/gdb/features/s390-gs-linux64.c b/gdb/features/s390-gs-linux64.c index 126835b..1416183 100644 --- a/gdb/features/s390-gs-linux64.c +++ b/gdb/features/s390-gs-linux64.c @@ -135,8 +135,8 @@ initialize_tdesc_s390_gs_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390-tevx-linux64.c b/gdb/features/s390-tevx-linux64.c index a9ee9e1..ae62e8d 100644 --- a/gdb/features/s390-tevx-linux64.c +++ b/gdb/features/s390-tevx-linux64.c @@ -135,8 +135,8 @@ initialize_tdesc_s390_tevx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390-vx-linux64.c b/gdb/features/s390-vx-linux64.c index b6c5dda..d3ec081 100644 --- a/gdb/features/s390-vx-linux64.c +++ b/gdb/features/s390-vx-linux64.c @@ -113,8 +113,8 @@ initialize_tdesc_s390_vx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-gs-linux64.c b/gdb/features/s390x-gs-linux64.c index 5ab3e3d..d253a09 100644 --- a/gdb/features/s390x-gs-linux64.c +++ b/gdb/features/s390x-gs-linux64.c @@ -119,8 +119,8 @@ initialize_tdesc_s390x_gs_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-tevx-linux64.c b/gdb/features/s390x-tevx-linux64.c index e5ecedf..1ac3249 100644 --- a/gdb/features/s390x-tevx-linux64.c +++ b/gdb/features/s390x-tevx-linux64.c @@ -119,8 +119,8 @@ initialize_tdesc_s390x_tevx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/features/s390x-vx-linux64.c b/gdb/features/s390x-vx-linux64.c index 1f24349..2e3d382 100644 --- a/gdb/features/s390x-vx-linux64.c +++ b/gdb/features/s390x-vx-linux64.c @@ -97,8 +97,8 @@ initialize_tdesc_s390x_vx_linux64 (void) tdesc_create_vector (feature, "v2i64", element_type, 2); tdesc_type_with_fields *type_with_fields; - tdesc_type *field_type; type_with_fields = tdesc_create_union (feature, "vec128"); + tdesc_type *field_type; field_type = tdesc_named_type (feature, "v4f"); tdesc_add_field (type_with_fields, "v4_float", field_type); field_type = tdesc_named_type (feature, "v2d"); diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c index 88ac55f..5dcc4c4 100644 --- a/gdb/target-descriptions.c +++ b/gdb/target-descriptions.c @@ -1894,13 +1894,6 @@ public: m_printed_type_with_fields = true; } - if (!type->fields.empty () - && !m_printed_field_type) - { - printf_unfiltered (" tdesc_type *field_type;\n"); - m_printed_field_type = true; - } - switch (type->kind) { case TDESC_TYPE_STRUCT: @@ -1949,8 +1942,8 @@ public: } else { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", type_name); printf_unfiltered (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," @@ -1962,10 +1955,8 @@ public: { gdb_assert (f.end == -1); gdb_assert (type->kind == TDESC_TYPE_STRUCT); - printf_unfiltered - (" field_type = tdesc_named_type (feature," - " \"%s\");\n", - type_name); + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", type_name); printf_unfiltered (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); @@ -1978,9 +1969,8 @@ public: type->name.c_str ()); for (const tdesc_type_field &f : type->fields) { - printf_unfiltered - (" field_type = tdesc_named_type (feature, \"%s\");\n", - f.type->name.c_str ()); + printf_field_type_assignment + ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); printf_unfiltered (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", f.name.c_str ()); @@ -2018,6 +2008,25 @@ protected: std::string m_filename_after_features; private: + + /* Print an assignment to the field_type variable. Print the declaration + of field_type if that has not been done yet. */ + void printf_field_type_assignment (const char *fmt, ...) + { + if (!m_printed_field_type) + { + printf_unfiltered (" tdesc_type *field_type;\n"); + m_printed_field_type = true; + } + + printf_unfiltered (" field_type = "); + + va_list args; + va_start (args, fmt); + vprintf_unfiltered (fmt, args); + va_end (args); + } + char *m_function; /* Did we print "struct tdesc_type *element_type;" yet? */ -- 2.7.4 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-12-21 23:24 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-12-19 19:18 [PATCH/RFA] Do not emit "field_type" var if not needed on "maint print c-tdesc" Sergio Durigan Junior 2017-12-19 20:16 ` Simon Marchi 2017-12-19 20:51 ` Sergio Durigan Junior 2017-12-21 9:10 ` Yao Qi 2017-12-21 23:24 ` Simon Marchi
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