* [PATCH v2 0/3] RISC-V: Support zfinx extension
@ 2021-11-05 13:00 jiawei
2021-11-05 13:00 ` [PATCH v2 1/3] RISC-V: Minimal support of " jiawei
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: jiawei @ 2021-11-05 13:00 UTC (permalink / raw)
To: gcc-patches
Cc: tariq.kurd, kito.cheng, nelson.chu, jimw, jeremy.bennett,
cmuellner, palmer, andrew, philipp.tomsich, lazyparser, sinan,
shihua, jiawei
Zfinx extension[1] had already finished public review. Here is the implementation patch set that reuse floating point pattern and ban the use of fpr when use zfinx as a target.
Current works can be find in follow links, we will keep update zhinx and zhinxmin after zfh extension goes upstream.
https://github.com/pz9115/riscv-gcc/tree/zfinx-rebase
https://github.com/pz9115/riscv-binutils-gdb/tree/zfinx-rebase
For test you can use qemu or spike that support zfinx extension, the
qemu will go upstream soon and spike is still in review:
https://github.com/plctlab/plct-qemu/tree/plct-zfinx-dev
https://github.com/plctlab/plct-spike/tree/plct-upstream-zfinx
Thanks for Tariq Kurd, Kito Cheng, Jim Willson, Jeremy Bennett helped us a lot with this work.
[1] https://github.com/riscv/riscv-zfinx/blob/main/zfinx-1.0.0-rc.pdf
Version log:
v2: As Kito Cheng's comment, add Changelog part in patches, update imply info in riscv-common.c,
remove useless check and update annotation in riscv.c.
jiawei (3):
RISC-V: Minimal support of zfinx extension
RISC-V: Target support for zfinx extension
RISC-V: Limit regs use for zfinx extension
gcc/common/config/riscv/riscv-common.c | 7 +++
gcc/config/riscv/arch-canonicalize | 1 +
gcc/config/riscv/constraints.md | 3 +-
gcc/config/riscv/riscv-builtins.c | 4 +-
gcc/config/riscv/riscv-c.c | 2 +-
gcc/config/riscv/riscv-opts.h | 6 +++
gcc/config/riscv/riscv.c | 14 ++++-
gcc/config/riscv/riscv.md | 72 +++++++++++++-------------
gcc/config/riscv/riscv.opt | 3 ++
9 files changed, 71 insertions(+), 41 deletions(-)
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2 1/3] RISC-V: Minimal support of zfinx extension
2021-11-05 13:00 [PATCH v2 0/3] RISC-V: Support zfinx extension jiawei
@ 2021-11-05 13:00 ` jiawei
2021-11-05 13:00 ` [PATCH v2 2/3] RISC-V: Target support for " jiawei
2021-11-05 13:00 ` [PATCH v2 3/3] RISC-V: Limit regs use " jiawei
2 siblings, 0 replies; 4+ messages in thread
From: jiawei @ 2021-11-05 13:00 UTC (permalink / raw)
To: gcc-patches
Cc: tariq.kurd, kito.cheng, nelson.chu, jimw, jeremy.bennett,
cmuellner, palmer, andrew, philipp.tomsich, lazyparser, sinan,
shihua, jiawei
Minimal support of zfinx extension, include 'zfinx' and 'zdinx' corresponding to 'f' and 'd', the 'zdinx' will imply 'zfinx' same as 'd' imply 'f'.
gcc/ChangeLog:
* common/config/riscv/riscv-common.c(riscv_implied_info_t): Add zdinx imply zfinx.
(riscv_ext_version_table): Add zfinx, zdinx.
* config/riscv/arch-canonicalize(IMPLIED_EXT): Add zdinx imply zfinx.
* config/riscv/riscv-opts.h
(MASK_ZFINX): New.
(MASK_ZDINX): Ditto.
(TARGET_ZFINX): Ditto.
(TARGET_ZDINX): Ditto.
* config/riscv/riscv.opt(riscv_zf_subext): New.
Co-Authored-By: sinan <sinan@isrc.iscas.ac.cn>
---
gcc/common/config/riscv/riscv-common.c | 7 +++++++
gcc/config/riscv/arch-canonicalize | 1 +
gcc/config/riscv/riscv-opts.h | 6 ++++++
gcc/config/riscv/riscv.opt | 3 +++
4 files changed, 17 insertions(+)
diff --git a/gcc/common/config/riscv/riscv-common.c b/gcc/common/config/riscv/riscv-common.c
index 37b6ea80086..6db5a434257 100644
--- a/gcc/common/config/riscv/riscv-common.c
+++ b/gcc/common/config/riscv/riscv-common.c
@@ -50,6 +50,7 @@ static const riscv_implied_info_t riscv_implied_info[] =
{"d", "f"},
{"f", "zicsr"},
{"d", "zicsr"},
+ {"zdinx", "zfinx"},
{NULL, NULL}
};
@@ -106,6 +107,9 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
{"zbc", ISA_SPEC_CLASS_NONE, 1, 0},
{"zbs", ISA_SPEC_CLASS_NONE, 1, 0},
+ {"zfinx", ISA_SPEC_CLASS_NONE, 1, 0},
+ {"zdinx", ISA_SPEC_CLASS_NONE, 1, 0},
+
/* Terminate the list. */
{NULL, ISA_SPEC_CLASS_NONE, 0, 0}
};
@@ -916,6 +920,9 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] =
{"zbc", &gcc_options::x_riscv_zb_subext, MASK_ZBC},
{"zbs", &gcc_options::x_riscv_zb_subext, MASK_ZBS},
+ {"zfinx", &gcc_options::x_riscv_zf_subext, MASK_ZFINX},
+ {"zdinx", &gcc_options::x_riscv_zf_subext, MASK_ZDINX},
+
{NULL, NULL, 0}
};
diff --git a/gcc/config/riscv/arch-canonicalize b/gcc/config/riscv/arch-canonicalize
index c7df3c8a313..9197163d1c3 100755
--- a/gcc/config/riscv/arch-canonicalize
+++ b/gcc/config/riscv/arch-canonicalize
@@ -36,6 +36,7 @@ LONG_EXT_PREFIXES = ['z', 's', 'h', 'x']
#
IMPLIED_EXT = {
"d" : ["f"],
+ "zdinx" : ["zfinx"],
}
def arch_canonicalize(arch):
diff --git a/gcc/config/riscv/riscv-opts.h b/gcc/config/riscv/riscv-opts.h
index 2efc4b80f1f..5a790a028cf 100644
--- a/gcc/config/riscv/riscv-opts.h
+++ b/gcc/config/riscv/riscv-opts.h
@@ -83,4 +83,10 @@ enum stack_protector_guard {
#define TARGET_ZBC ((riscv_zb_subext & MASK_ZBC) != 0)
#define TARGET_ZBS ((riscv_zb_subext & MASK_ZBS) != 0)
+#define MASK_ZFINX (1 << 0)
+#define MASK_ZDINX (1 << 1)
+
+#define TARGET_ZFINX ((riscv_zf_subext & MASK_ZFINX) != 0)
+#define TARGET_ZDINX ((riscv_zf_subext & MASK_ZDINX) != 0)
+
#endif /* ! GCC_RISCV_OPTS_H */
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 15bf89e17c2..54d27747eff 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -198,6 +198,9 @@ int riscv_zi_subext
TargetVariable
int riscv_zb_subext
+TargetVariable
+int riscv_zf_subext
+
Enum
Name(isa_spec_class) Type(enum riscv_isa_spec_class)
Supported ISA specs (for use with the -misa-spec= option):
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2 2/3] RISC-V: Target support for zfinx extension
2021-11-05 13:00 [PATCH v2 0/3] RISC-V: Support zfinx extension jiawei
2021-11-05 13:00 ` [PATCH v2 1/3] RISC-V: Minimal support of " jiawei
@ 2021-11-05 13:00 ` jiawei
2021-11-05 13:00 ` [PATCH v2 3/3] RISC-V: Limit regs use " jiawei
2 siblings, 0 replies; 4+ messages in thread
From: jiawei @ 2021-11-05 13:00 UTC (permalink / raw)
To: gcc-patches
Cc: tariq.kurd, kito.cheng, nelson.chu, jimw, jeremy.bennett,
cmuellner, palmer, andrew, philipp.tomsich, lazyparser, sinan,
shihua, jiawei
Support 'TARGET_ZFINX' with float instruction pattern and builtin function.
gcc/ChangeLog:
* config/riscv/riscv-builtins.c (AVAIL): Add TARGET_ZFINX.
(riscv_atomic_assign_expand_fenv): Ditto.
* config/riscv/riscv-c.c (riscv_cpu_cpp_builtins): Add TARGET_ZFINX.
* config/riscv/riscv.md
(TARGET_HARD_FLOAT || TARGET_ZFINX): Add TARGET_ZFINX.
(TARGET_DOUBLE_FLOAT || TARGET_ZDINX): Add TARGET_ZDINX.
Co-Authored-By: sinan <sinan@isrc.iscas.ac.cn>
---
gcc/config/riscv/riscv-builtins.c | 4 +-
gcc/config/riscv/riscv-c.c | 2 +-
gcc/config/riscv/riscv.md | 72 +++++++++++++++----------------
3 files changed, 39 insertions(+), 39 deletions(-)
diff --git a/gcc/config/riscv/riscv-builtins.c b/gcc/config/riscv/riscv-builtins.c
index 97b1480a15e..d892e6cdb26 100644
--- a/gcc/config/riscv/riscv-builtins.c
+++ b/gcc/config/riscv/riscv-builtins.c
@@ -85,7 +85,7 @@ struct riscv_builtin_description {
unsigned int (*avail) (void);
};
-AVAIL (hard_float, TARGET_HARD_FLOAT)
+AVAIL (hard_float, TARGET_HARD_FLOAT || TARGET_ZFINX)
/* Construct a riscv_builtin_description from the given arguments.
@@ -279,7 +279,7 @@ riscv_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED,
void
riscv_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
{
- if (!TARGET_HARD_FLOAT)
+ if (!(TARGET_HARD_FLOAT || TARGET_ZFINX))
return;
tree frflags = GET_BUILTIN_DECL (CODE_FOR_riscv_frflags);
diff --git a/gcc/config/riscv/riscv-c.c b/gcc/config/riscv/riscv-c.c
index efd4a61ea29..d064a7fc2b3 100644
--- a/gcc/config/riscv/riscv-c.c
+++ b/gcc/config/riscv/riscv-c.c
@@ -58,7 +58,7 @@ riscv_cpu_cpp_builtins (cpp_reader *pfile)
if (TARGET_HARD_FLOAT)
builtin_define_with_int_value ("__riscv_flen", UNITS_PER_FP_REG * 8);
- if (TARGET_HARD_FLOAT && TARGET_FDIV)
+ if ((TARGET_HARD_FLOAT || TARGET_ZFINX) && TARGET_FDIV)
{
builtin_define ("__riscv_fdiv");
builtin_define ("__riscv_fsqrt");
diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
index 225e5b259c1..27c9c74c679 100644
--- a/gcc/config/riscv/riscv.md
+++ b/gcc/config/riscv/riscv.md
@@ -296,8 +296,8 @@
(define_mode_iterator ANYI [QI HI SI (DI "TARGET_64BIT")])
;; Iterator for hardware-supported floating-point modes.
-(define_mode_iterator ANYF [(SF "TARGET_HARD_FLOAT")
- (DF "TARGET_DOUBLE_FLOAT")])
+(define_mode_iterator ANYF [(SF "TARGET_HARD_FLOAT || TARGET_ZFINX")
+ (DF "TARGET_DOUBLE_FLOAT || TARGET_ZDINX")])
;; Iterator for floating-point modes that can be loaded into X registers.
(define_mode_iterator SOFTF [SF (DF "TARGET_64BIT")])
@@ -444,7 +444,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(plus:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fadd.<fmt>\t%0,%1,%2"
[(set_attr "type" "fadd")
(set_attr "mode" "<UNITMODE>")])
@@ -575,7 +575,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(minus:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fsub.<fmt>\t%0,%1,%2"
[(set_attr "type" "fadd")
(set_attr "mode" "<UNITMODE>")])
@@ -745,7 +745,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(mult:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fmul.<fmt>\t%0,%1,%2"
[(set_attr "type" "fmul")
(set_attr "mode" "<UNITMODE>")])
@@ -1052,7 +1052,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(div:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT && TARGET_FDIV"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && TARGET_FDIV"
"fdiv.<fmt>\t%0,%1,%2"
[(set_attr "type" "fdiv")
(set_attr "mode" "<UNITMODE>")])
@@ -1067,7 +1067,7 @@
(define_insn "sqrt<mode>2"
[(set (match_operand:ANYF 0 "register_operand" "=f")
(sqrt:ANYF (match_operand:ANYF 1 "register_operand" " f")))]
- "TARGET_HARD_FLOAT && TARGET_FDIV"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && TARGET_FDIV"
{
return "fsqrt.<fmt>\t%0,%1";
}
@@ -1082,7 +1082,7 @@
(fma:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")
(match_operand:ANYF 3 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fmadd.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1093,7 +1093,7 @@
(fma:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")
(neg:ANYF (match_operand:ANYF 3 "register_operand" " f"))))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fmsub.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1105,7 +1105,7 @@
(neg:ANYF (match_operand:ANYF 1 "register_operand" " f"))
(match_operand:ANYF 2 "register_operand" " f")
(neg:ANYF (match_operand:ANYF 3 "register_operand" " f"))))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fnmadd.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1117,7 +1117,7 @@
(neg:ANYF (match_operand:ANYF 1 "register_operand" " f"))
(match_operand:ANYF 2 "register_operand" " f")
(match_operand:ANYF 3 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fnmsub.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1130,7 +1130,7 @@
(neg:ANYF (match_operand:ANYF 1 "register_operand" " f"))
(match_operand:ANYF 2 "register_operand" " f")
(neg:ANYF (match_operand:ANYF 3 "register_operand" " f")))))]
- "TARGET_HARD_FLOAT && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && !HONOR_SIGNED_ZEROS (<MODE>mode)"
"fmadd.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1143,7 +1143,7 @@
(neg:ANYF (match_operand:ANYF 1 "register_operand" " f"))
(match_operand:ANYF 2 "register_operand" " f")
(match_operand:ANYF 3 "register_operand" " f"))))]
- "TARGET_HARD_FLOAT && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && !HONOR_SIGNED_ZEROS (<MODE>mode)"
"fmsub.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1156,7 +1156,7 @@
(match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")
(match_operand:ANYF 3 "register_operand" " f"))))]
- "TARGET_HARD_FLOAT && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && !HONOR_SIGNED_ZEROS (<MODE>mode)"
"fnmadd.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1169,7 +1169,7 @@
(match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")
(neg:ANYF (match_operand:ANYF 3 "register_operand" " f")))))]
- "TARGET_HARD_FLOAT && !HONOR_SIGNED_ZEROS (<MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && !HONOR_SIGNED_ZEROS (<MODE>mode)"
"fnmsub.<fmt>\t%0,%1,%2,%3"
[(set_attr "type" "fmadd")
(set_attr "mode" "<UNITMODE>")])
@@ -1184,7 +1184,7 @@
(define_insn "abs<mode>2"
[(set (match_operand:ANYF 0 "register_operand" "=f")
(abs:ANYF (match_operand:ANYF 1 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fabs.<fmt>\t%0,%1"
[(set_attr "type" "fmove")
(set_attr "mode" "<UNITMODE>")])
@@ -1194,7 +1194,7 @@
(unspec:ANYF [(match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")]
UNSPEC_COPYSIGN))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fsgnj.<fmt>\t%0,%1,%2"
[(set_attr "type" "fmove")
(set_attr "mode" "<UNITMODE>")])
@@ -1202,7 +1202,7 @@
(define_insn "neg<mode>2"
[(set (match_operand:ANYF 0 "register_operand" "=f")
(neg:ANYF (match_operand:ANYF 1 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fneg.<fmt>\t%0,%1"
[(set_attr "type" "fmove")
(set_attr "mode" "<UNITMODE>")])
@@ -1218,7 +1218,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(smin:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fmin.<fmt>\t%0,%1,%2"
[(set_attr "type" "fmove")
(set_attr "mode" "<UNITMODE>")])
@@ -1227,7 +1227,7 @@
[(set (match_operand:ANYF 0 "register_operand" "=f")
(smax:ANYF (match_operand:ANYF 1 "register_operand" " f")
(match_operand:ANYF 2 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fmax.<fmt>\t%0,%1,%2"
[(set_attr "type" "fmove")
(set_attr "mode" "<UNITMODE>")])
@@ -1288,7 +1288,7 @@
[(set (match_operand:SF 0 "register_operand" "=f")
(float_truncate:SF
(match_operand:DF 1 "register_operand" " f")))]
- "TARGET_DOUBLE_FLOAT"
+ "TARGET_DOUBLE_FLOAT || TARGET_ZDINX"
"fcvt.s.d\t%0,%1"
[(set_attr "type" "fcvt")
(set_attr "mode" "SF")])
@@ -1414,7 +1414,7 @@
[(set (match_operand:DF 0 "register_operand" "=f")
(float_extend:DF
(match_operand:SF 1 "register_operand" " f")))]
- "TARGET_DOUBLE_FLOAT"
+ "TARGET_DOUBLE_FLOAT || TARGET_ZDINX"
"fcvt.d.s\t%0,%1"
[(set_attr "type" "fcvt")
(set_attr "mode" "DF")])
@@ -1430,7 +1430,7 @@
[(set (match_operand:GPR 0 "register_operand" "=r")
(fix:GPR
(match_operand:ANYF 1 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fcvt.<GPR:ifmt>.<ANYF:fmt> %0,%1,rtz"
[(set_attr "type" "fcvt")
(set_attr "mode" "<ANYF:MODE>")])
@@ -1439,7 +1439,7 @@
[(set (match_operand:GPR 0 "register_operand" "=r")
(unsigned_fix:GPR
(match_operand:ANYF 1 "register_operand" " f")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fcvt.<GPR:ifmt>u.<ANYF:fmt> %0,%1,rtz"
[(set_attr "type" "fcvt")
(set_attr "mode" "<ANYF:MODE>")])
@@ -1448,7 +1448,7 @@
[(set (match_operand:ANYF 0 "register_operand" "= f")
(float:ANYF
(match_operand:GPR 1 "reg_or_0_operand" " rJ")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fcvt.<ANYF:fmt>.<GPR:ifmt>\t%0,%z1"
[(set_attr "type" "fcvt")
(set_attr "mode" "<ANYF:MODE>")])
@@ -1457,7 +1457,7 @@
[(set (match_operand:ANYF 0 "register_operand" "= f")
(unsigned_float:ANYF
(match_operand:GPR 1 "reg_or_0_operand" " rJ")))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fcvt.<ANYF:fmt>.<GPR:ifmt>u\t%0,%z1"
[(set_attr "type" "fcvt")
(set_attr "mode" "<ANYF:MODE>")])
@@ -1467,7 +1467,7 @@
(unspec:GPR
[(match_operand:ANYF 1 "register_operand" " f")]
RINT))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fcvt.<GPR:ifmt>.<ANYF:fmt> %0,%1,<rint_rm>"
[(set_attr "type" "fcvt")
(set_attr "mode" "<ANYF:MODE>")])
@@ -1741,7 +1741,7 @@
(define_insn "*movdf_hardfloat_rv32"
[(set (match_operand:DF 0 "nonimmediate_operand" "=f,f,f,m,m, *r,*r,*m")
(match_operand:DF 1 "move_operand" " f,G,m,f,G,*r*G,*m,*r"))]
- "!TARGET_64BIT && TARGET_DOUBLE_FLOAT
+ "!TARGET_64BIT && (TARGET_DOUBLE_FLOAT || TARGET_ZDINX)
&& (register_operand (operands[0], DFmode)
|| reg_or_0_operand (operands[1], DFmode))"
{ return riscv_output_move (operands[0], operands[1]); }
@@ -2190,7 +2190,7 @@
(match_operand:ANYF 2 "register_operand")])
(label_ref (match_operand 3 ""))
(pc)))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
{
riscv_expand_conditional_branch (operands[3], GET_CODE (operands[0]),
operands[1], operands[2]);
@@ -2279,7 +2279,7 @@
(match_operator:SI 1 "fp_scc_comparison"
[(match_operand:ANYF 2 "register_operand")
(match_operand:ANYF 3 "register_operand")]))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
{
riscv_expand_float_scc (operands[0], GET_CODE (operands[1]), operands[2],
operands[3]);
@@ -2291,7 +2291,7 @@
(match_operator:X 1 "fp_native_comparison"
[(match_operand:ANYF 2 "register_operand" " f")
(match_operand:ANYF 3 "register_operand" " f")]))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"f%C1.<fmt>\t%0,%2,%3"
[(set_attr "type" "fcmp")
(set_attr "mode" "<UNITMODE>")])
@@ -2303,7 +2303,7 @@
(match_operand:ANYF 2 "register_operand")]
QUIET_COMPARISON))
(clobber (match_scratch:X 3))])]
- "TARGET_HARD_FLOAT")
+ "TARGET_HARD_FLOAT || TARGET_ZFINX")
(define_insn "*f<quiet_pattern>_quiet<ANYF:mode><X:mode>4_default"
[(set (match_operand:X 0 "register_operand" "=r")
@@ -2312,7 +2312,7 @@
(match_operand:ANYF 2 "register_operand" " f")]
QUIET_COMPARISON))
(clobber (match_scratch:X 3 "=&r"))]
- "TARGET_HARD_FLOAT && ! HONOR_SNANS (<ANYF:MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && ! HONOR_SNANS (<ANYF:MODE>mode)"
"frflags\t%3\n\tf<quiet_pattern>.<fmt>\t%0,%1,%2\n\tfsflags %3"
[(set_attr "type" "fcmp")
(set_attr "mode" "<UNITMODE>")
@@ -2325,7 +2325,7 @@
(match_operand:ANYF 2 "register_operand" " f")]
QUIET_COMPARISON))
(clobber (match_scratch:X 3 "=&r"))]
- "TARGET_HARD_FLOAT && HONOR_SNANS (<ANYF:MODE>mode)"
+ "(TARGET_HARD_FLOAT || TARGET_ZFINX) && HONOR_SNANS (<ANYF:MODE>mode)"
"frflags\t%3\n\tf<quiet_pattern>.<fmt>\t%0,%1,%2\n\tfsflags %3\n\tfeq.<fmt>\tzero,%1,%2"
[(set_attr "type" "fcmp")
(set_attr "mode" "<UNITMODE>")
@@ -2729,12 +2729,12 @@
(define_insn "riscv_frflags"
[(set (match_operand:SI 0 "register_operand" "=r")
(unspec_volatile [(const_int 0)] UNSPECV_FRFLAGS))]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"frflags\t%0")
(define_insn "riscv_fsflags"
[(unspec_volatile [(match_operand:SI 0 "csr_operand" "rK")] UNSPECV_FSFLAGS)]
- "TARGET_HARD_FLOAT"
+ "TARGET_HARD_FLOAT || TARGET_ZFINX"
"fsflags\t%0")
(define_insn "riscv_mret"
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2 3/3] RISC-V: Limit regs use for zfinx extension
2021-11-05 13:00 [PATCH v2 0/3] RISC-V: Support zfinx extension jiawei
2021-11-05 13:00 ` [PATCH v2 1/3] RISC-V: Minimal support of " jiawei
2021-11-05 13:00 ` [PATCH v2 2/3] RISC-V: Target support for " jiawei
@ 2021-11-05 13:00 ` jiawei
2 siblings, 0 replies; 4+ messages in thread
From: jiawei @ 2021-11-05 13:00 UTC (permalink / raw)
To: gcc-patches
Cc: tariq.kurd, kito.cheng, nelson.chu, jimw, jeremy.bennett,
cmuellner, palmer, andrew, philipp.tomsich, lazyparser, sinan,
shihua, jiawei
Limit zfinx abi support with 'ilp32','ilp32e','lp64' only.
Use GPR instead FPR when 'zfinx' enable, Only use even registers in RV32 when 'zdinx' enable.
gcc/ChangeLog:
* config/riscv/constraints.md
(TARGET_HARD_FLOAT ? FP_REGS : ((TARGET_ZFINX || TARGET_ZDINX) ? GR_REGS : NO_REGS)):
Use gpr when zfinx or zdinx enable.
* config/riscv/riscv.c (riscv_hard_regno_mode_ok): Add TARGET_ZFINX.
(riscv_option_override): Ditto.
(riscv_abi): Add ABI limit for zfinx.
Co-Authored-By: sinan <sinan@isrc.iscas.ac.cn>
---
gcc/config/riscv/constraints.md | 3 ++-
gcc/config/riscv/riscv.c | 14 +++++++++++++-
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/gcc/config/riscv/constraints.md b/gcc/config/riscv/constraints.md
index c87d5b796a5..a99b8ce277e 100644
--- a/gcc/config/riscv/constraints.md
+++ b/gcc/config/riscv/constraints.md
@@ -20,8 +20,9 @@
;; <http://www.gnu.org/licenses/>.
;; Register constraints
+;; Zfinx support need refuse FPR and use GPR
-(define_register_constraint "f" "TARGET_HARD_FLOAT ? FP_REGS : NO_REGS"
+(define_register_constraint "f" "TARGET_HARD_FLOAT ? FP_REGS : ((TARGET_ZFINX || TARGET_ZDINX) ? GR_REGS : NO_REGS)"
"A floating-point register (if available).")
(define_register_constraint "j" "SIBCALL_REGS"
diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
index a545dbf66f7..f4e0e46e1a7 100644
--- a/gcc/config/riscv/riscv.c
+++ b/gcc/config/riscv/riscv.c
@@ -4789,6 +4789,13 @@ riscv_hard_regno_mode_ok (unsigned int regno, machine_mode mode)
!= call_used_or_fixed_reg_p (regno + i))
return false;
+ /* Only use even registers in RV32 ZDINX */
+ if (!TARGET_64BIT && TARGET_ZDINX){
+ if (GET_MODE_CLASS (mode) == MODE_FLOAT &&
+ GET_MODE_UNIT_SIZE (mode) == GET_MODE_SIZE (DFmode))
+ return !(regno & 1);
+ }
+
return true;
}
@@ -4980,7 +4987,7 @@ riscv_option_override (void)
error ("%<-mdiv%> requires %<-march%> to subsume the %<M%> extension");
/* Likewise floating-point division and square root. */
- if (TARGET_HARD_FLOAT && (target_flags_explicit & MASK_FDIV) == 0)
+ if ((TARGET_HARD_FLOAT || TARGET_ZFINX) && (target_flags_explicit & MASK_FDIV) == 0)
target_flags |= MASK_FDIV;
/* Handle -mtune, use -mcpu if -mtune is not given, and use default -mtune
@@ -5026,6 +5033,11 @@ riscv_option_override (void)
if (TARGET_RVE && riscv_abi != ABI_ILP32E)
error ("rv32e requires ilp32e ABI");
+ // Zfinx require abi ilp32,ilp32e or lp64.
+ if (TARGET_ZFINX && riscv_abi != ABI_ILP32
+ && riscv_abi != ABI_LP64 && riscv_abi != ABI_ILP32E)
+ error ("z*inx requires ABI ilp32, ilp32e or lp64");
+
/* We do not yet support ILP32 on RV64. */
if (BITS_PER_WORD != POINTER_SIZE)
error ("ABI requires %<-march=rv%d%>", POINTER_SIZE);
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-11-05 13:01 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-11-05 13:00 [PATCH v2 0/3] RISC-V: Support zfinx extension jiawei
2021-11-05 13:00 ` [PATCH v2 1/3] RISC-V: Minimal support of " jiawei
2021-11-05 13:00 ` [PATCH v2 2/3] RISC-V: Target support for " jiawei
2021-11-05 13:00 ` [PATCH v2 3/3] RISC-V: Limit regs use " jiawei
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