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Wed, 9 Nov 2022 08:26:24 +0000 From: Tamar Christina To: Richard Biener CC: "gcc-patches@gcc.gnu.org" , nd , "jeffreyalaw@gmail.com" Subject: Re: [PATCH 1/4]middle-end Support not decomposing specific divisions during vectorization. Thread-Topic: [PATCH 1/4]middle-end Support not decomposing specific divisions during vectorization. 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Ah sorry, i missed that one. Thanks, Tamar ________________________________ From: Richard Biener Sent: Wednesday, November 9, 2022 8:01 AM To: Tamar Christina Cc: gcc-patches@gcc.gnu.org ; nd ; jef= freyalaw@gmail.com Subject: RE: [PATCH 1/4]middle-end Support not decomposing specific divisio= ns during vectorization. On Tue, 8 Nov 2022, Tamar Christina wrote: > Ping. Jeff approved this already. I think it's OK if the rest of the series is approved. Richard. > > -----Original Message----- > > From: Tamar Christina > > Sent: Monday, October 31, 2022 11:35 AM > > To: Richard Biener > > Cc: gcc-patches@gcc.gnu.org; nd ; jeffreyalaw@gmail.com > > Subject: RE: [PATCH 1/4]middle-end Support not decomposing specific > > divisions during vectorization. > > > > > > > > The type of the expression should be available via the mode and the > > > signedness, no? So maybe to avoid having both RTX and TREE on the > > > target hook pass it a wide_int instead for the divisor? > > > > > > > Done. > > > > Bootstrapped Regtested on aarch64-none-linux-gnu, x86_64-pc-linux-gnu > > and no issues. > > > > Ok for master? > > > > Thanks, > > Tamar > > > > gcc/ChangeLog: > > > > * expmed.h (expand_divmod): Pass tree operands down in addition > > to RTX. > > * expmed.cc (expand_divmod): Likewise. > > * explow.cc (round_push, align_dynamic_address): Likewise. > > * expr.cc (force_operand, expand_expr_divmod): Likewise. > > * optabs.cc (expand_doubleword_mod, > > expand_doubleword_divmod): > > Likewise. > > * target.h: Include tree-core. > > * target.def (can_special_div_by_const): New. > > * targhooks.cc (default_can_special_div_by_const): New. > > * targhooks.h (default_can_special_div_by_const): New. > > * tree-vect-generic.cc (expand_vector_operation): Use it. > > * doc/tm.texi.in: Document it. > > * doc/tm.texi: Regenerate. > > * tree-vect-patterns.cc (vect_recog_divmod_pattern): Check for > > support. > > * tree-vect-stmts.cc (vectorizable_operation): Likewise. > > > > gcc/testsuite/ChangeLog: > > > > * gcc.dg/vect/vect-div-bitmask-1.c: New test. > > * gcc.dg/vect/vect-div-bitmask-2.c: New test. > > * gcc.dg/vect/vect-div-bitmask-3.c: New test. > > * gcc.dg/vect/vect-div-bitmask.h: New file. > > > > --- inline copy of patch --- > > > > diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index > > 92bda1a7e14a3c9ea63e151e4a49a818bf4d1bdb..a29f5c39be3f0927f8ef6e094 > > c7a712c0604fb77 100644 > > --- a/gcc/doc/tm.texi > > +++ b/gcc/doc/tm.texi > > @@ -6112,6 +6112,22 @@ instruction pattern. There is no need for the h= ook > > to handle these two implementation approaches itself. > > @end deftypefn > > > > +@deftypefn {Target Hook} bool > > TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST > > +(enum @var{tree_code}, tree @var{vectype}, wide_int @var{constant}, rtx > > +*@var{output}, rtx @var{in0}, rtx @var{in1}) This hook is used to test > > +whether the target has a special method of division of vectors of type > > +@var{vectype} using the value @var{constant}, and producing a vector of > > type @var{vectype}. The division will then not be decomposed by the and > > kept as a div. > > + > > +When the hook is being used to test whether the target supports a > > +special divide, @var{in0}, @var{in1}, and @var{output} are all null. > > +When the hook is being used to emit a division, @var{in0} and @var{in1} > > +are the source vectors of type @var{vecttype} and @var{output} is the > > +destination vector of type @var{vectype}. > > + > > +Return true if the operation is possible, emitting instructions for it > > +if rtxes are provided and updating @var{output}. > > +@end deftypefn > > + > > @deftypefn {Target Hook} tree > > TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION (unsigned > > @var{code}, tree @var{vec_type_out}, tree @var{vec_type_in}) This hook > > should return the decl of a function that implements the vectorized va= riant > > of the function with the @code{combined_fn} code diff --git > > a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index > > 112462310b134705d860153294287cfd7d4af81d..d5a745a02acdf051ea1da1b04 > > 076d058c24ce093 100644 > > --- a/gcc/doc/tm.texi.in > > +++ b/gcc/doc/tm.texi.in > > @@ -4164,6 +4164,8 @@ address; but often a machine-dependent strategy > > can generate better code. > > > > @hook TARGET_VECTORIZE_VEC_PERM_CONST > > > > +@hook TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST > > + > > @hook TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION > > > > @hook TARGET_VECTORIZE_BUILTIN_MD_VECTORIZED_FUNCTION > > diff --git a/gcc/explow.cc b/gcc/explow.cc index > > ddb4d6ae3600542f8d2bb5617cdd3933a9fae6c0..568e0eb1a158c696458ae678f > > 5e346bf34ba0036 100644 > > --- a/gcc/explow.cc > > +++ b/gcc/explow.cc > > @@ -1037,7 +1037,7 @@ round_push (rtx size) > > TRUNC_DIV_EXPR. */ > > size =3D expand_binop (Pmode, add_optab, size, alignm1_rtx, > > NULL_RTX, 1, OPTAB_LIB_WIDEN); > > - size =3D expand_divmod (0, TRUNC_DIV_EXPR, Pmode, size, align_rtx, > > + size =3D expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, size, > > + align_rtx, > > NULL_RTX, 1); > > size =3D expand_mult (Pmode, size, align_rtx, NULL_RTX, 1); > > > > @@ -1203,7 +1203,7 @@ align_dynamic_address (rtx target, unsigned > > required_align) > > gen_int_mode (required_align / BITS_PER_UNIT - 1, > > Pmode), > > NULL_RTX, 1, OPTAB_LIB_WIDEN); > > - target =3D expand_divmod (0, TRUNC_DIV_EXPR, Pmode, target, > > + target =3D expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, > > target, > > gen_int_mode (required_align / BITS_PER_UNIT, > > Pmode), > > NULL_RTX, 1); > > diff --git a/gcc/expmed.h b/gcc/expmed.h index > > 0b2538c4c6bd51dfdc772ef70bdf631c0bed8717..0db2986f11ff4a4b10b59501c6 > > f33cb3595659b5 100644 > > --- a/gcc/expmed.h > > +++ b/gcc/expmed.h > > @@ -708,8 +708,9 @@ extern rtx expand_variable_shift (enum tree_code, > > machine_mode, extern rtx expand_shift (enum tree_code, machine_mode, > > rtx, poly_int64, rtx, > > int); > > #ifdef GCC_OPTABS_H > > -extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx, > > - rtx, int, enum optab_methods =3D > > OPTAB_LIB_WIDEN); > > +extern rtx expand_divmod (int, enum tree_code, machine_mode, tree, > > tree, > > + rtx, rtx, rtx, int, > > + enum optab_methods =3D OPTAB_LIB_WIDEN); > > #endif > > #endif > > > > diff --git a/gcc/expmed.cc b/gcc/expmed.cc index > > 8d7418be418406e72a895ecddf2dc7fdb950c76c..bab020c07222afa38305ef8d7 > > 333f271b1965b78 100644 > > --- a/gcc/expmed.cc > > +++ b/gcc/expmed.cc > > @@ -4222,8 +4222,8 @@ expand_sdiv_pow2 (scalar_int_mode mode, rtx > > op0, HOST_WIDE_INT d) > > > > rtx > > expand_divmod (int rem_flag, enum tree_code code, machine_mode > > mode, > > - rtx op0, rtx op1, rtx target, int unsignedp, > > - enum optab_methods methods) > > + tree treeop0, tree treeop1, rtx op0, rtx op1, rtx target, > > + int unsignedp, enum optab_methods methods) > > { > > machine_mode compute_mode; > > rtx tquotient; > > @@ -4375,6 +4375,17 @@ expand_divmod (int rem_flag, enum tree_code > > code, machine_mode mode, > > > > last_div_const =3D ! rem_flag && op1_is_constant ? INTVAL (op1) : 0; > > > > + /* Check if the target has specific expansions for the division. */ > > + tree cst; > > + if (treeop0 > > + && treeop1 > > + && (cst =3D uniform_integer_cst_p (treeop1)) > > + && targetm.vectorize.can_special_div_by_const (code, TREE_TYPE > > (treeop0), > > + wi::to_wide (cst), > > + &target, op0, op1)) > > + return target; > > + > > + > > /* Now convert to the best mode to use. */ > > if (compute_mode !=3D mode) > > { > > @@ -4618,8 +4629,8 @@ expand_divmod (int rem_flag, enum tree_code > > code, machine_mode mode, > > || (optab_handler (sdivmod_optab, int_mode) > > !=3D CODE_FOR_nothing))) > > quotient =3D expand_divmod (0, TRUNC_DIV_EXPR, > > - int_mode, op0, > > - gen_int_mode (abs_d, > > + int_mode, treeop0, treeop1, > > + op0, gen_int_mode (abs_d, > > int_mode), > > NULL_RTX, 0); > > else > > @@ -4808,8 +4819,8 @@ expand_divmod (int rem_flag, enum tree_code > > code, machine_mode mode, > > size - 1, NULL_RTX, 0); > > t3 =3D force_operand (gen_rtx_MINUS (int_mode, t1, nsign), > > NULL_RTX); > > - t4 =3D expand_divmod (0, TRUNC_DIV_EXPR, int_mode, t3, > > op1, > > - NULL_RTX, 0); > > + t4 =3D expand_divmod (0, TRUNC_DIV_EXPR, int_mode, > > treeop0, > > + treeop1, t3, op1, NULL_RTX, 0); > > if (t4) > > { > > rtx t5; > > diff --git a/gcc/expr.cc b/gcc/expr.cc > > index > > 80bb1b8a4c5b8350fb1b8f57a99fd52e5882fcb6..b786f1d75e25f3410c0640cd96 > > a8abc055fa34d9 100644 > > --- a/gcc/expr.cc > > +++ b/gcc/expr.cc > > @@ -8028,16 +8028,17 @@ force_operand (rtx value, rtx target) > > return expand_divmod (0, > > FLOAT_MODE_P (GET_MODE (value)) > > ? RDIV_EXPR : TRUNC_DIV_EXPR, > > - GET_MODE (value), op1, op2, target, 0); > > + GET_MODE (value), NULL, NULL, op1, op2, > > + target, 0); > > case MOD: > > - return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), > > op1, op2, > > - target, 0); > > + return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), > > NULL, NULL, > > + op1, op2, target, 0); > > case UDIV: > > - return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), > > op1, op2, > > - target, 1); > > + return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), > > NULL, NULL, > > + op1, op2, target, 1); > > case UMOD: > > - return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), > > op1, op2, > > - target, 1); > > + return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), > > NULL, NULL, > > + op1, op2, target, 1); > > case ASHIFTRT: > > return expand_simple_binop (GET_MODE (value), code, op1, op2, > > target, 0, OPTAB_LIB_WIDEN); > > @@ -8990,11 +8991,13 @@ expand_expr_divmod (tree_code code, > > machine_mode mode, tree treeop0, > > bool speed_p =3D optimize_insn_for_speed_p (); > > do_pending_stack_adjust (); > > start_sequence (); > > - rtx uns_ret =3D expand_divmod (mod_p, code, mode, op0, op1, targ= et, 1); > > + rtx uns_ret =3D expand_divmod (mod_p, code, mode, treeop0, treeo= p1, > > + op0, op1, target, 1); > > rtx_insn *uns_insns =3D get_insns (); > > end_sequence (); > > start_sequence (); > > - rtx sgn_ret =3D expand_divmod (mod_p, code, mode, op0, op1, targ= et, 0); > > + rtx sgn_ret =3D expand_divmod (mod_p, code, mode, treeop0, treeo= p1, > > + op0, op1, target, 0); > > rtx_insn *sgn_insns =3D get_insns (); > > end_sequence (); > > unsigned uns_cost =3D seq_cost (uns_insns, speed_p); @@ -9016,7 = +9019,8 > > @@ expand_expr_divmod (tree_code code, machine_mode mode, tree > > treeop0, > > emit_insn (sgn_insns); > > return sgn_ret; > > } > > - return expand_divmod (mod_p, code, mode, op0, op1, target, unsignedp= ); > > + return expand_divmod (mod_p, code, mode, treeop0, treeop1, > > + op0, op1, target, unsignedp); > > } > > > > rtx > > diff --git a/gcc/optabs.cc b/gcc/optabs.cc index > > 165f8d1fa22432b96967c69a58dbb7b4bf18120d..cff37ccb0dfc3dd79b97d0abfd > > 872f340855dc96 100644 > > --- a/gcc/optabs.cc > > +++ b/gcc/optabs.cc > > @@ -1104,8 +1104,9 @@ expand_doubleword_mod (machine_mode mode, > > rtx op0, rtx op1, bool unsignedp) > > return NULL_RTX; > > } > > } > > - rtx remainder =3D expand_divmod (1, TRUNC_MOD_EXPR, word_mode, > > sum, > > - gen_int_mode (INTVAL (op1), > > word_mode), > > + rtx remainder =3D expand_divmod (1, TRUNC_MOD_EXPR, word_mode, > > NULL, NULL, > > + sum, gen_int_mode (INTVAL (op1), > > + word_mode), > > NULL_RTX, 1, OPTAB_DIRECT); > > if (remainder =3D=3D NULL_RTX) > > return NULL_RTX; > > @@ -1208,8 +1209,8 @@ expand_doubleword_divmod (machine_mode > > mode, rtx op0, rtx op1, rtx *rem, > > > > if (op11 !=3D const1_rtx) > > { > > - rtx rem2 =3D expand_divmod (1, TRUNC_MOD_EXPR, mode, quot1, op11, > > - NULL_RTX, unsignedp, OPTAB_DIRECT); > > + rtx rem2 =3D expand_divmod (1, TRUNC_MOD_EXPR, mode, NULL, NULL, > > quot1, > > + op11, NULL_RTX, unsignedp, > > OPTAB_DIRECT); > > if (rem2 =3D=3D NULL_RTX) > > return NULL_RTX; > > > > @@ -1223,8 +1224,8 @@ expand_doubleword_divmod (machine_mode > > mode, rtx op0, rtx op1, rtx *rem, > > if (rem2 =3D=3D NULL_RTX) > > return NULL_RTX; > > > > - rtx quot2 =3D expand_divmod (0, TRUNC_DIV_EXPR, mode, quot1, op1= 1, > > - NULL_RTX, unsignedp, OPTAB_DIRECT); > > + rtx quot2 =3D expand_divmod (0, TRUNC_DIV_EXPR, mode, NULL, NULL, > > quot1, > > + op11, NULL_RTX, unsignedp, > > OPTAB_DIRECT); > > if (quot2 =3D=3D NULL_RTX) > > return NULL_RTX; > > > > diff --git a/gcc/target.def b/gcc/target.def index > > 2a7fa68f83dd15dcdd2c332e8431e6142ec7d305..f491e2233cf18760631f148dac > > f18d0e0b133e4c 100644 > > --- a/gcc/target.def > > +++ b/gcc/target.def > > @@ -1902,6 +1902,25 @@ implementation approaches itself.", > > const vec_perm_indices &sel), > > NULL) > > > > +DEFHOOK > > +(can_special_div_by_const, > > + "This hook is used to test whether the target has a special method > > +of\n\ division of vectors of type @var{vectype} using the value > > +@var{constant},\n\ and producing a vector of type @var{vectype}. The > > +division\n\ will then not be decomposed by the and kept as a div.\n\ > > +\n\ When the hook is being used to test whether the target supports a > > +special\n\ divide, @var{in0}, @var{in1}, and @var{output} are all null. > > +When the hook\n\ is being used to emit a division, @var{in0} and > > +@var{in1} are the source\n\ vectors of type @var{vecttype} and > > +@var{output} is the destination vector of\n\ type @var{vectype}.\n\ \n\ > > +Return true if the operation is possible, emitting instructions for > > +it\n\ if rtxes are provided and updating @var{output}.", bool, (enum > > +tree_code, tree vectype, wide_int constant, rtx *output, > > + rtx in0, rtx in1), > > + default_can_special_div_by_const) > > + > > /* Return true if the target supports misaligned store/load of a > > specific factor denoted in the third parameter. The last parameter > > is true if the access is defined in a packed struct. */ diff --git= a/gcc/target.h > > b/gcc/target.h index > > d6fa6931499d15edff3e5af3e429540d001c7058..c836036ac7fa7910d62bd3da56 > > f39c061f68b665 100644 > > --- a/gcc/target.h > > +++ b/gcc/target.h > > @@ -51,6 +51,7 @@ > > #include "insn-codes.h" > > #include "tm.h" > > #include "hard-reg-set.h" > > +#include "tree-core.h" > > > > #if CHECKING_P > > > > diff --git a/gcc/targhooks.h b/gcc/targhooks.h index > > ecce55ebe797cedc940620e8d89816973a045d49..c8df2af02b9d8c41d953b7887 > > dd980b1a7c5cf1c 100644 > > --- a/gcc/targhooks.h > > +++ b/gcc/targhooks.h > > @@ -207,6 +207,8 @@ extern void default_addr_space_diagnose_usage > > (addr_space_t, location_t); extern rtx default_addr_space_convert (rtx, > > tree, tree); extern unsigned int default_case_values_threshold (void); > > extern bool default_have_conditional_execution (void); > > +extern bool default_can_special_div_by_const (enum tree_code, tree, > > wide_int, > > + rtx *, rtx, rtx); > > > > extern bool default_libc_has_function (enum function_class, tree); ex= tern > > bool default_libc_has_fast_function (int fcode); diff --git a/gcc/targh= ooks.cc > > b/gcc/targhooks.cc index > > b15ae19bcb60c59ae8112e67b5f06a241a9bdbf1..f941b1c218d3c4de8b7f780b6 > > 9fe04593ae3419e 100644 > > --- a/gcc/targhooks.cc > > +++ b/gcc/targhooks.cc > > @@ -1807,6 +1807,14 @@ default_have_conditional_execution (void) > > return HAVE_conditional_execution; > > } > > > > +/* Default that no division by constant operations are special. */ > > +bool default_can_special_div_by_const (enum tree_code, tree, wide_int, > > +rtx *, rtx, > > + rtx) > > +{ > > + return false; > > +} > > + > > /* By default we assume that c99 functions are present at the runtime, > > but sincos is not. */ > > bool > > diff --git a/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-1.c > > b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-1.c > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..472cd710534bc8aa9b1b4916f3 > > d7b4d5b64a19b9 > > --- /dev/null > > +++ b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-1.c > > @@ -0,0 +1,25 @@ > > +/* { dg-require-effective-target vect_int } */ > > + > > +#include > > +#include "tree-vect.h" > > + > > +#define N 50 > > +#define TYPE uint8_t > > + > > +__attribute__((noipa, noinline, optimize("O1"))) void fun1(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * level) / 0xff; } > > + > > +__attribute__((noipa, noinline, optimize("O3"))) void fun2(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * level) / 0xff; } > > + > > +#include "vect-div-bitmask.h" > > + > > +/* { dg-final { scan-tree-dump-not "vect_recog_divmod_pattern: > > +detected" "vect" { target aarch64*-*-* } } } */ > > diff --git a/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-2.c > > b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-2.c > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..e904a71885b2e8487593a2cd3 > > db75b3e4112e2cc > > --- /dev/null > > +++ b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-2.c > > @@ -0,0 +1,25 @@ > > +/* { dg-require-effective-target vect_int } */ > > + > > +#include > > +#include "tree-vect.h" > > + > > +#define N 50 > > +#define TYPE uint16_t > > + > > +__attribute__((noipa, noinline, optimize("O1"))) void fun1(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * level) / 0xffffU; } > > + > > +__attribute__((noipa, noinline, optimize("O3"))) void fun2(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * level) / 0xffffU; } > > + > > +#include "vect-div-bitmask.h" > > + > > +/* { dg-final { scan-tree-dump-not "vect_recog_divmod_pattern: > > +detected" "vect" { target aarch64*-*-* } } } */ > > diff --git a/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-3.c > > b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-3.c > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..a1418ebbf5ea8731ed4e3e720 > > 157701d9d1cf852 > > --- /dev/null > > +++ b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask-3.c > > @@ -0,0 +1,26 @@ > > +/* { dg-require-effective-target vect_int } */ > > +/* { dg-additional-options "-fno-vect-cost-model" { target aarch64*-*-* > > +} } */ > > + > > +#include > > +#include "tree-vect.h" > > + > > +#define N 50 > > +#define TYPE uint32_t > > + > > +__attribute__((noipa, noinline, optimize("O1"))) void fun1(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * (uint64_t)level) / 0xffffffffUL; } > > + > > +__attribute__((noipa, noinline, optimize("O3"))) void fun2(TYPE* > > +restrict pixel, TYPE level, int n) { > > + for (int i =3D 0; i < n; i+=3D1) > > + pixel[i] =3D (pixel[i] * (uint64_t)level) / 0xffffffffUL; } > > + > > +#include "vect-div-bitmask.h" > > + > > +/* { dg-final { scan-tree-dump-not "vect_recog_divmod_pattern: > > +detected" "vect" { target aarch64*-*-* } } } */ > > diff --git a/gcc/testsuite/gcc.dg/vect/vect-div-bitmask.h > > b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask.h > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..29a16739aa4b706616367bfd1 > > 832f28ebd07993e > > --- /dev/null > > +++ b/gcc/testsuite/gcc.dg/vect/vect-div-bitmask.h > > @@ -0,0 +1,43 @@ > > +#include > > + > > +#ifndef N > > +#define N 65 > > +#endif > > + > > +#ifndef TYPE > > +#define TYPE uint32_t > > +#endif > > + > > +#ifndef DEBUG > > +#define DEBUG 0 > > +#endif > > + > > +#define BASE ((TYPE) -1 < 0 ? -126 : 4) > > + > > +int main () > > +{ > > + TYPE a[N]; > > + TYPE b[N]; > > + > > + for (int i =3D 0; i < N; ++i) > > + { > > + a[i] =3D BASE + i * 13; > > + b[i] =3D BASE + i * 13; > > + if (DEBUG) > > + printf ("%d: 0x%x\n", i, a[i]); > > + } > > + > > + fun1 (a, N / 2, N); > > + fun2 (b, N / 2, N); > > + > > + for (int i =3D 0; i < N; ++i) > > + { > > + if (DEBUG) > > + printf ("%d =3D 0x%x =3D=3D 0x%x\n", i, a[i], b[i]); > > + > > + if (a[i] !=3D b[i]) > > + __builtin_abort (); > > + } > > + return 0; > > +} > > + > > diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc index > > 350129555a0c71c0896c4f1003163f3b3557c11b..6ad6372c55eef94a742a8fa35e7 > > 9d66aa24e2f3b 100644 > > --- a/gcc/tree-vect-generic.cc > > +++ b/gcc/tree-vect-generic.cc > > @@ -1237,6 +1237,17 @@ expand_vector_operation (gimple_stmt_iterator > > *gsi, tree type, tree compute_type > > tree rhs2 =3D gimple_assign_rhs2 (assign); > > tree ret; > > > > + /* Check if the target was going to handle it through the special > > + division callback hook. */ > > + tree cst =3D uniform_integer_cst_p (rhs2); > > + if (cst && > > + targetm.vectorize.can_special_div_by_const (code, type, > > + wi::to_wide (cst), > > + NULL, > > + NULL_RTX, > > NULL_RTX)) > > + return NULL_TREE; > > + > > + > > if (!optimize > > || !VECTOR_INTEGER_TYPE_P (type) > > || TREE_CODE (rhs2) !=3D VECTOR_CST diff --git a/gcc/tree-ve= ct- > > patterns.cc b/gcc/tree-vect-patterns.cc index > > 09574bb1a2696b3438a4ce9f09f74b42e784aca0..e91bcef56fff931a7a7ba534a0 > > affd56e7314370 100644 > > --- a/gcc/tree-vect-patterns.cc > > +++ b/gcc/tree-vect-patterns.cc > > @@ -3432,7 +3432,7 @@ vect_recog_divmod_pattern (vec_info *vinfo, > > gimple *pattern_stmt, *def_stmt; > > enum tree_code rhs_code; > > optab optab; > > - tree q; > > + tree q, cst; > > int dummy_int, prec; > > > > if (!is_gimple_assign (last_stmt)) > > @@ -3596,6 +3596,14 @@ vect_recog_divmod_pattern (vec_info *vinfo, > > > > return pattern_stmt; > > } > > + else if ((cst =3D uniform_integer_cst_p (oprnd1)) > > + && targetm.vectorize.can_special_div_by_const (rhs_code, > > vectype, > > + wi::to_wide (cst), > > + NULL, NULL_RTX, > > + NULL_RTX)) > > + { > > + return NULL; > > + } > > > > if (prec > HOST_BITS_PER_WIDE_INT > > || integer_zerop (oprnd1)) > > diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc index > > c9dab217f059f17e91e9a7582523e627d7a45b66..1399c22ba0df75f582887d7e8 > > 3b67e3ea53d25f4 100644 > > --- a/gcc/tree-vect-stmts.cc > > +++ b/gcc/tree-vect-stmts.cc > > @@ -6260,6 +6260,14 @@ vectorizable_operation (vec_info *vinfo, > > } > > target_support_p =3D (optab_handler (optab, vec_mode) > > !=3D CODE_FOR_nothing); > > + tree cst; > > + if (!target_support_p > > + && (cst =3D uniform_integer_cst_p (op1))) > > + target_support_p > > + =3D targetm.vectorize.can_special_div_by_const (code, vectype, > > + wi::to_wide (cst), > > + NULL, NULL_RTX, > > + NULL_RTX); > > } > > > > bool using_emulated_vectors_p =3D vect_emulated_vector_p (vectype); > -- Richard Biener SUSE Software Solutions Germany GmbH, Frankenstrasse 146, 90461 Nuernberg, Germany; GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman; HRB 36809 (AG Nuernberg) --_000_VI1PR08MB5325EAFE1FB1BB4316328CA4FF3E9VI1PR08MB5325eurp_--