From 88fefa8f868b48cfdd016dc9e056a10c150225d4 Mon Sep 17 00:00:00 2001 From: rsandifo Date: Sat, 13 Jan 2018 17:59:00 +0000 Subject: [PATCH] Add support for reductions in fully-masked loops This patch removes the restriction that fully-masked loops cannot have reductions. The key thing here is to make sure that the reduction accumulator doesn't include any values associated with inactive lanes; the patch adds a bunch of conditional binary operations for doing that. 2018-01-13 Richard Sandiford Alan Hayward David Sherwood gcc/ * doc/md.texi (cond_add@var{mode}, cond_sub@var{mode}) (cond_and@var{mode}, cond_ior@var{mode}, cond_xor@var{mode}) (cond_smin@var{mode}, cond_smax@var{mode}, cond_umin@var{mode}) (cond_umax@var{mode}): Document. * optabs.def (cond_add_optab, cond_sub_optab, cond_and_optab) (cond_ior_optab, cond_xor_optab, cond_smin_optab, cond_smax_optab) (cond_umin_optab, cond_umax_optab): New optabs. * internal-fn.def (COND_ADD, COND_SUB, COND_MIN, COND_MAX, COND_AND) (COND_IOR, COND_XOR): New internal functions. * internal-fn.h (get_conditional_internal_fn): Declare. * internal-fn.c (cond_binary_direct): New macro. (expand_cond_binary_optab_fn): Likewise. (direct_cond_binary_optab_supported_p): Likewise. (get_conditional_internal_fn): New function. * tree-vect-loop.c (vectorizable_reduction): Handle fully-masked loops. Cope with reduction statements that are vectorized as calls rather than assignments. * config/aarch64/aarch64-sve.md (cond_): New insns. * config/aarch64/iterators.md (UNSPEC_COND_ADD, UNSPEC_COND_SUB) (UNSPEC_COND_SMAX, UNSPEC_COND_UMAX, UNSPEC_COND_SMIN) (UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR) (UNSPEC_COND_EOR): New unspecs. (optab): Add mappings for them. (SVE_COND_INT_OP, SVE_COND_FP_OP): New int iterators. (sve_int_op, sve_fp_op): New int attributes. gcc/testsuite/ * gcc.dg/vect/pr60482.c: Remove XFAIL for variable-length vectors. * gcc.target/aarch64/sve/reduc_1.c: Expect the loop operations to be predicated. * gcc.target/aarch64/sve/slp_5.c: Check for a fully-masked loop. * gcc.target/aarch64/sve/slp_7.c: Likewise. * gcc.target/aarch64/sve/reduc_5.c: New test. * gcc.target/aarch64/sve/slp_13.c: Likewise. * gcc.target/aarch64/sve/slp_13_run.c: Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256626 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 30 ++++++++ gcc/config/aarch64/aarch64-sve.md | 24 +++++++ gcc/config/aarch64/iterators.md | 42 ++++++++++- gcc/doc/md.texi | 36 ++++++++++ gcc/internal-fn.c | 36 ++++++++++ gcc/internal-fn.def | 18 +++++ gcc/internal-fn.h | 2 + gcc/optabs.def | 9 +++ gcc/testsuite/ChangeLog | 13 ++++ gcc/testsuite/gcc.dg/vect/pr60482.c | 4 +- gcc/testsuite/gcc.target/aarch64/sve/reduc_1.c | 53 ++++++++------ gcc/testsuite/gcc.target/aarch64/sve/reduc_5.c | 38 ++++++++++ gcc/testsuite/gcc.target/aarch64/sve/slp_13.c | 52 ++++++++++++++ gcc/testsuite/gcc.target/aarch64/sve/slp_13_run.c | 28 ++++++++ gcc/testsuite/gcc.target/aarch64/sve/slp_5.c | 9 +++ gcc/testsuite/gcc.target/aarch64/sve/slp_7.c | 9 +++ gcc/tree-vect-loop.c | 88 +++++++++++++++++------ 17 files changed, 442 insertions(+), 49 deletions(-) create mode 100644 gcc/testsuite/gcc.target/aarch64/sve/reduc_5.c create mode 100644 gcc/testsuite/gcc.target/aarch64/sve/slp_13.c create mode 100644 gcc/testsuite/gcc.target/aarch64/sve/slp_13_run.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a00e7d9861e..c08d2b35e5e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -2,6 +2,36 @@ Alan Hayward David Sherwood + * doc/md.texi (cond_add@var{mode}, cond_sub@var{mode}) + (cond_and@var{mode}, cond_ior@var{mode}, cond_xor@var{mode}) + (cond_smin@var{mode}, cond_smax@var{mode}, cond_umin@var{mode}) + (cond_umax@var{mode}): Document. + * optabs.def (cond_add_optab, cond_sub_optab, cond_and_optab) + (cond_ior_optab, cond_xor_optab, cond_smin_optab, cond_smax_optab) + (cond_umin_optab, cond_umax_optab): New optabs. + * internal-fn.def (COND_ADD, COND_SUB, COND_MIN, COND_MAX, COND_AND) + (COND_IOR, COND_XOR): New internal functions. + * internal-fn.h (get_conditional_internal_fn): Declare. + * internal-fn.c (cond_binary_direct): New macro. + (expand_cond_binary_optab_fn): Likewise. + (direct_cond_binary_optab_supported_p): Likewise. + (get_conditional_internal_fn): New function. + * tree-vect-loop.c (vectorizable_reduction): Handle fully-masked loops. + Cope with reduction statements that are vectorized as calls rather + than assignments. + * config/aarch64/aarch64-sve.md (cond_): New insns. + * config/aarch64/iterators.md (UNSPEC_COND_ADD, UNSPEC_COND_SUB) + (UNSPEC_COND_SMAX, UNSPEC_COND_UMAX, UNSPEC_COND_SMIN) + (UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR) + (UNSPEC_COND_EOR): New unspecs. + (optab): Add mappings for them. + (SVE_COND_INT_OP, SVE_COND_FP_OP): New int iterators. + (sve_int_op, sve_fp_op): New int attributes. + +2018-01-13 Richard Sandiford + Alan Hayward + David Sherwood + * optabs.def (while_ult_optab): New optab. * doc/md.texi (while_ult@var{m}@var{n}): Document. * internal-fn.def (WHILE_ULT): New internal function. diff --git a/gcc/config/aarch64/aarch64-sve.md b/gcc/config/aarch64/aarch64-sve.md index b312ab7b715..0329fedb150 100644 --- a/gcc/config/aarch64/aarch64-sve.md +++ b/gcc/config/aarch64/aarch64-sve.md @@ -1417,6 +1417,18 @@ "\t%0., %1/m, %0., %3." ) +;; Predicated integer operations. +(define_insn "cond_" + [(set (match_operand:SVE_I 0 "register_operand" "=w") + (unspec:SVE_I + [(match_operand: 1 "register_operand" "Upl") + (match_operand:SVE_I 2 "register_operand" "0") + (match_operand:SVE_I 3 "register_operand" "w")] + SVE_COND_INT_OP))] + "TARGET_SVE" + "\t%0., %1/m, %0., %3." +) + ;; Unpredicated integer add reduction. (define_expand "reduc_plus_scal_" [(set (match_operand: 0 "register_operand") @@ -2094,6 +2106,18 @@ } ) +;; Predicated floating-point operations. +(define_insn "cond_" + [(set (match_operand:SVE_F 0 "register_operand" "=w") + (unspec:SVE_F + [(match_operand: 1 "register_operand" "Upl") + (match_operand:SVE_F 2 "register_operand" "0") + (match_operand:SVE_F 3 "register_operand" "w")] + SVE_COND_FP_OP))] + "TARGET_SVE" + "\t%0., %1/m, %0., %3." +) + ;; Shift an SVE vector left and insert a scalar into element 0. (define_insn "vec_shl_insert_" [(set (match_operand:SVE_ALL 0 "register_operand" "=w, w") diff --git a/gcc/config/aarch64/iterators.md b/gcc/config/aarch64/iterators.md index 406c5157ee8..c380b3bfecf 100644 --- a/gcc/config/aarch64/iterators.md +++ b/gcc/config/aarch64/iterators.md @@ -432,6 +432,15 @@ UNSPEC_ANDF ; Used in aarch64-sve.md. UNSPEC_IORF ; Used in aarch64-sve.md. UNSPEC_XORF ; Used in aarch64-sve.md. + UNSPEC_COND_ADD ; Used in aarch64-sve.md. + UNSPEC_COND_SUB ; Used in aarch64-sve.md. + UNSPEC_COND_SMAX ; Used in aarch64-sve.md. + UNSPEC_COND_UMAX ; Used in aarch64-sve.md. + UNSPEC_COND_SMIN ; Used in aarch64-sve.md. + UNSPEC_COND_UMIN ; Used in aarch64-sve.md. + UNSPEC_COND_AND ; Used in aarch64-sve.md. + UNSPEC_COND_ORR ; Used in aarch64-sve.md. + UNSPEC_COND_EOR ; Used in aarch64-sve.md. UNSPEC_COND_LT ; Used in aarch64-sve.md. UNSPEC_COND_LE ; Used in aarch64-sve.md. UNSPEC_COND_EQ ; Used in aarch64-sve.md. @@ -1452,6 +1461,15 @@ (define_int_iterator UNPACK_UNSIGNED [UNSPEC_UNPACKULO UNSPEC_UNPACKUHI]) +(define_int_iterator SVE_COND_INT_OP [UNSPEC_COND_ADD UNSPEC_COND_SUB + UNSPEC_COND_SMAX UNSPEC_COND_UMAX + UNSPEC_COND_SMIN UNSPEC_COND_UMIN + UNSPEC_COND_AND + UNSPEC_COND_ORR + UNSPEC_COND_EOR]) + +(define_int_iterator SVE_COND_FP_OP [UNSPEC_COND_ADD UNSPEC_COND_SUB]) + (define_int_iterator SVE_COND_INT_CMP [UNSPEC_COND_LT UNSPEC_COND_LE UNSPEC_COND_EQ UNSPEC_COND_NE UNSPEC_COND_GE UNSPEC_COND_GT @@ -1484,7 +1502,16 @@ (UNSPEC_XORF "xor") (UNSPEC_ANDV "and") (UNSPEC_IORV "ior") - (UNSPEC_XORV "xor")]) + (UNSPEC_XORV "xor") + (UNSPEC_COND_ADD "add") + (UNSPEC_COND_SUB "sub") + (UNSPEC_COND_SMAX "smax") + (UNSPEC_COND_UMAX "umax") + (UNSPEC_COND_SMIN "smin") + (UNSPEC_COND_UMIN "umin") + (UNSPEC_COND_AND "and") + (UNSPEC_COND_ORR "ior") + (UNSPEC_COND_EOR "xor")]) (define_int_attr maxmin_uns [(UNSPEC_UMAXV "umax") (UNSPEC_UMINV "umin") @@ -1696,3 +1723,16 @@ (UNSPEC_COND_LS "vsd") (UNSPEC_COND_HS "vsd") (UNSPEC_COND_HI "vsd")]) + +(define_int_attr sve_int_op [(UNSPEC_COND_ADD "add") + (UNSPEC_COND_SUB "sub") + (UNSPEC_COND_SMAX "smax") + (UNSPEC_COND_UMAX "umax") + (UNSPEC_COND_SMIN "smin") + (UNSPEC_COND_UMIN "umin") + (UNSPEC_COND_AND "and") + (UNSPEC_COND_ORR "orr") + (UNSPEC_COND_EOR "eor")]) + +(define_int_attr sve_fp_op [(UNSPEC_COND_ADD "fadd") + (UNSPEC_COND_SUB "fsub")]) diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index f4e89c39d5d..285cffd22f6 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -6248,6 +6248,42 @@ move operand 2 or (operands 2 + operand 3) into operand 0 according to the comparison in operand 1. If the comparison is false, operand 2 is moved into operand 0, otherwise (operand 2 + operand 3) is moved. +@cindex @code{cond_add@var{mode}} instruction pattern +@cindex @code{cond_sub@var{mode}} instruction pattern +@cindex @code{cond_and@var{mode}} instruction pattern +@cindex @code{cond_ior@var{mode}} instruction pattern +@cindex @code{cond_xor@var{mode}} instruction pattern +@cindex @code{cond_smin@var{mode}} instruction pattern +@cindex @code{cond_smax@var{mode}} instruction pattern +@cindex @code{cond_umin@var{mode}} instruction pattern +@cindex @code{cond_umax@var{mode}} instruction pattern +@item @samp{cond_add@var{mode}} +@itemx @samp{cond_sub@var{mode}} +@itemx @samp{cond_and@var{mode}} +@itemx @samp{cond_ior@var{mode}} +@itemx @samp{cond_xor@var{mode}} +@itemx @samp{cond_smin@var{mode}} +@itemx @samp{cond_smax@var{mode}} +@itemx @samp{cond_umin@var{mode}} +@itemx @samp{cond_umax@var{mode}} +Perform an elementwise operation on vector operands 2 and 3, +under the control of the vector mask in operand 1, and store the result +in operand 0. This is equivalent to: + +@smallexample +for (i = 0; i < GET_MODE_NUNITS (@var{n}); i++) + op0[i] = op1[i] ? op2[i] @var{op} op3[i] : op2[i]; +@end smallexample + +where, for example, @var{op} is @code{+} for @samp{cond_add@var{mode}}. + +When defined for floating-point modes, the contents of @samp{op3[i]} +are not interpreted if @var{op1[i]} is false, just like they would not +be in a normal C @samp{?:} condition. + +Operands 0, 2 and 3 all have mode @var{m}, while operand 1 has the mode +returned by @code{TARGET_VECTORIZE_GET_MASK_MODE}. + @cindex @code{neg@var{mode}cc} instruction pattern @item @samp{neg@var{mode}cc} Similar to @samp{mov@var{mode}cc} but for conditional negation. Conditionally diff --git a/gcc/internal-fn.c b/gcc/internal-fn.c index 44d5486adc5..bc4027bd603 100644 --- a/gcc/internal-fn.c +++ b/gcc/internal-fn.c @@ -88,6 +88,7 @@ init_internal_fns () #define mask_store_lanes_direct { 0, 0, false } #define unary_direct { 0, 0, true } #define binary_direct { 0, 0, true } +#define cond_binary_direct { 1, 1, true } #define while_direct { 0, 2, false } const direct_internal_fn_info direct_internal_fn_array[IFN_LAST + 1] = { @@ -2855,6 +2856,9 @@ expand_while_optab_fn (internal_fn, gcall *stmt, convert_optab optab) #define expand_binary_optab_fn(FN, STMT, OPTAB) \ expand_direct_optab_fn (FN, STMT, OPTAB, 2) +#define expand_cond_binary_optab_fn(FN, STMT, OPTAB) \ + expand_direct_optab_fn (FN, STMT, OPTAB, 3) + /* RETURN_TYPE and ARGS are a return type and argument list that are in principle compatible with FN (which satisfies direct_internal_fn_p). Return the types that should be used to determine whether the @@ -2928,6 +2932,7 @@ multi_vector_optab_supported_p (convert_optab optab, tree_pair types, #define direct_unary_optab_supported_p direct_optab_supported_p #define direct_binary_optab_supported_p direct_optab_supported_p +#define direct_cond_binary_optab_supported_p direct_optab_supported_p #define direct_mask_load_optab_supported_p direct_optab_supported_p #define direct_load_lanes_optab_supported_p multi_vector_optab_supported_p #define direct_mask_load_lanes_optab_supported_p multi_vector_optab_supported_p @@ -3049,6 +3054,37 @@ static void (*const internal_fn_expanders[]) (internal_fn, gcall *) = { 0 }; +/* Return a function that performs the conditional form of CODE, i.e.: + + LHS = RHS1 ? RHS2 CODE RHS3 : RHS2 + + (operating elementwise if the operands are vectors). Return IFN_LAST + if no such function exists. */ + +internal_fn +get_conditional_internal_fn (tree_code code) +{ + switch (code) + { + case PLUS_EXPR: + return IFN_COND_ADD; + case MINUS_EXPR: + return IFN_COND_SUB; + case MIN_EXPR: + return IFN_COND_MIN; + case MAX_EXPR: + return IFN_COND_MAX; + case BIT_AND_EXPR: + return IFN_COND_AND; + case BIT_IOR_EXPR: + return IFN_COND_IOR; + case BIT_XOR_EXPR: + return IFN_COND_XOR; + default: + return IFN_LAST; + } +} + /* Expand STMT as though it were a call to internal function FN. */ void diff --git a/gcc/internal-fn.def b/gcc/internal-fn.def index 39dd7fc15c2..f0984402355 100644 --- a/gcc/internal-fn.def +++ b/gcc/internal-fn.def @@ -53,6 +53,11 @@ along with GCC; see the file COPYING3. If not see - store_lanes: currently just vec_store_lanes - mask_store_lanes: currently just vec_mask_store_lanes + - unary: a normal unary optab, such as vec_reverse_ + - binary: a normal binary optab, such as vec_interleave_lo_ + + - cond_binary: a conditional binary optab, such as addcc + DEF_INTERNAL_SIGNED_OPTAB_FN defines an internal function that maps to one of two optabs, depending on the signedness of an input. SIGNED_OPTAB and UNSIGNED_OPTAB are the optabs for signed and @@ -121,6 +126,19 @@ DEF_INTERNAL_OPTAB_FN (WHILE_ULT, ECF_CONST | ECF_NOTHROW, while_ult, while) DEF_INTERNAL_OPTAB_FN (VEC_SHL_INSERT, ECF_CONST | ECF_NOTHROW, vec_shl_insert, binary) +DEF_INTERNAL_OPTAB_FN (COND_ADD, ECF_CONST, cond_add, cond_binary) +DEF_INTERNAL_OPTAB_FN (COND_SUB, ECF_CONST, cond_sub, cond_binary) +DEF_INTERNAL_SIGNED_OPTAB_FN (COND_MIN, ECF_CONST, first, + cond_smin, cond_umin, cond_binary) +DEF_INTERNAL_SIGNED_OPTAB_FN (COND_MAX, ECF_CONST, first, + cond_smax, cond_umax, cond_binary) +DEF_INTERNAL_OPTAB_FN (COND_AND, ECF_CONST | ECF_NOTHROW, + cond_and, cond_binary) +DEF_INTERNAL_OPTAB_FN (COND_IOR, ECF_CONST | ECF_NOTHROW, + cond_ior, cond_binary) +DEF_INTERNAL_OPTAB_FN (COND_XOR, ECF_CONST | ECF_NOTHROW, + cond_xor, cond_binary) + DEF_INTERNAL_OPTAB_FN (RSQRT, ECF_CONST, rsqrt, unary) DEF_INTERNAL_OPTAB_FN (REDUC_PLUS, ECF_CONST | ECF_NOTHROW, diff --git a/gcc/internal-fn.h b/gcc/internal-fn.h index 22c15f25db5..0464e3f9e7a 100644 --- a/gcc/internal-fn.h +++ b/gcc/internal-fn.h @@ -190,6 +190,8 @@ direct_internal_fn_supported_p (internal_fn fn, tree type0, tree type1, extern bool set_edom_supported_p (void); +extern internal_fn get_conditional_internal_fn (tree_code); + extern void expand_internal_call (gcall *); extern void expand_internal_call (internal_fn, gcall *); extern void expand_PHI (internal_fn, gcall *); diff --git a/gcc/optabs.def b/gcc/optabs.def index 318a2c7c844..9a79f4d250b 100644 --- a/gcc/optabs.def +++ b/gcc/optabs.def @@ -220,6 +220,15 @@ OPTAB_D (addcc_optab, "add$acc") OPTAB_D (negcc_optab, "neg$acc") OPTAB_D (notcc_optab, "not$acc") OPTAB_D (movcc_optab, "mov$acc") +OPTAB_D (cond_add_optab, "cond_add$a") +OPTAB_D (cond_sub_optab, "cond_sub$a") +OPTAB_D (cond_and_optab, "cond_and$a") +OPTAB_D (cond_ior_optab, "cond_ior$a") +OPTAB_D (cond_xor_optab, "cond_xor$a") +OPTAB_D (cond_smin_optab, "cond_smin$a") +OPTAB_D (cond_smax_optab, "cond_smax$a") +OPTAB_D (cond_umin_optab, "cond_umin$a") +OPTAB_D (cond_umax_optab, "cond_umax$a") OPTAB_D (cmov_optab, "cmov$a6") OPTAB_D (cstore_optab, "cstore$a4") OPTAB_D (ctrap_optab, "ctrap$a4") diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a7370ec9679..7363c0d04a4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -2,6 +2,19 @@ Alan Hayward David Sherwood + * gcc.dg/vect/pr60482.c: Remove XFAIL for variable-length vectors. + * gcc.target/aarch64/sve/reduc_1.c: Expect the loop operations + to be predicated. + * gcc.target/aarch64/sve/slp_5.c: Check for a fully-masked loop. + * gcc.target/aarch64/sve/slp_7.c: Likewise. + * gcc.target/aarch64/sve/reduc_5.c: New test. + * gcc.target/aarch64/sve/slp_13.c: Likewise. + * gcc.target/aarch64/sve/slp_13_run.c: Likewise. + +2018-01-13 Richard Sandiford + Alan Hayward + David Sherwood + * gcc.dg/tree-ssa/cunroll-10.c: Disable vectorization. * gcc.dg/tree-ssa/peel1.c: Likewise. * gcc.dg/vect/vect-load-lanes-peeling-1.c: Remove XFAIL for diff --git a/gcc/testsuite/gcc.dg/vect/pr60482.c b/gcc/testsuite/gcc.dg/vect/pr60482.c index b07fe1ef33e..4c5c20c8109 100644 --- a/gcc/testsuite/gcc.dg/vect/pr60482.c +++ b/gcc/testsuite/gcc.dg/vect/pr60482.c @@ -16,6 +16,4 @@ foo (double *x, int n) return p; } -/* Until fully-masked loops are supported, we always need an epilog - loop for variable-length vectors. */ -/* { dg-final { scan-tree-dump-not "epilog loop required" "vect" { xfail vect_variable_length } } } */ +/* { dg-final { scan-tree-dump-not "epilog loop required" "vect" } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/reduc_1.c b/gcc/testsuite/gcc.target/aarch64/sve/reduc_1.c index 72dc793b650..a258344b0a9 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/reduc_1.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/reduc_1.c @@ -105,10 +105,10 @@ reduc_##NAME##_##TYPE (TYPE *a, int n) \ TEST_BITWISE (DEF_REDUC_BITWISE) -/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.b, z[0-9]+\.b, z[0-9]+\.b\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.h, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.s, z[0-9]+\.s, z[0-9]+\.s\n} 2 } } */ -/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.d, z[0-9]+\.d, z[0-9]+\.d\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.b, p[0-7]/m, z[0-9]+\.b, z[0-9]+\.b\n} 1 } } */ +/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ +/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 2 } } */ /* { dg-final { scan-assembler-times {\tsmin\tz[0-9]+\.b, p[0-7]/m, z[0-9]+\.b, z[0-9]+\.b\n} 1 } } */ /* { dg-final { scan-assembler-times {\tsmin\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ @@ -130,9 +130,9 @@ TEST_BITWISE (DEF_REDUC_BITWISE) /* { dg-final { scan-assembler-times {\tumax\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */ /* { dg-final { scan-assembler-times {\tumax\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.h, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.s, z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.d, z[0-9]+\.d, z[0-9]+\.d\n} 1 } } */ +/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ +/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */ +/* { dg-final { scan-assembler-times {\tfadd\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 1 } } */ /* { dg-final { scan-assembler-times {\tfmaxnm\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 1 } } */ /* { dg-final { scan-assembler-times {\tfmaxnm\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */ @@ -142,11 +142,20 @@ TEST_BITWISE (DEF_REDUC_BITWISE) /* { dg-final { scan-assembler-times {\tfminnm\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */ /* { dg-final { scan-assembler-times {\tfminnm\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.d, z[0-9]+\.d, z[0-9]+\.d\n} 8 } } */ +/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.b, p[0-7]/m, z[0-9]+\.b, z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 2 } } */ -/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.d, z[0-9]+\.d, z[0-9]+\.d\n} 8 } } */ +/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.b, p[0-7]/m, z[0-9]+\.b, z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 2 } } */ -/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.d, z[0-9]+\.d, z[0-9]+\.d\n} 8 } } */ +/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.b, p[0-7]/m, z[0-9]+\.b, z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.h, p[0-7]/m, z[0-9]+\.h, z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.s, p[0-7]/m, z[0-9]+\.s, z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.d, p[0-7]/m, z[0-9]+\.d, z[0-9]+\.d\n} 2 } } */ /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.b\n} 1 } } */ /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.h\n} 1 } } */ @@ -180,17 +189,17 @@ TEST_BITWISE (DEF_REDUC_BITWISE) /* { dg-final { scan-assembler-times {\tfminnmv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 1 } } */ /* { dg-final { scan-assembler-times {\tfminnmv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 1 } } */ -/* { dg-final { scan-assembler-times {\tandv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } } */ -/* { dg-final { scan-assembler-times {\tandv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } } */ -/* { dg-final { scan-assembler-times {\tandv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } } */ -/* { dg-final { scan-assembler-times {\tandv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } } */ +/* { dg-final { scan-assembler-times {\tandv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tandv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tandv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tandv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 } } */ -/* { dg-final { scan-assembler-times {\torv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } } */ -/* { dg-final { scan-assembler-times {\torv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } } */ -/* { dg-final { scan-assembler-times {\torv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } } */ -/* { dg-final { scan-assembler-times {\torv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } } */ +/* { dg-final { scan-assembler-times {\torv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\torv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 } } */ -/* { dg-final { scan-assembler-times {\teorv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } } */ -/* { dg-final { scan-assembler-times {\teorv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } } */ -/* { dg-final { scan-assembler-times {\teorv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } } */ -/* { dg-final { scan-assembler-times {\teorv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } } */ +/* { dg-final { scan-assembler-times {\teorv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teorv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teorv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\teorv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/reduc_5.c b/gcc/testsuite/gcc.target/aarch64/sve/reduc_5.c new file mode 100644 index 00000000000..ff535942331 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/sve/reduc_5.c @@ -0,0 +1,38 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -ftree-vectorize -ffast-math" } */ + +#include + +#define REDUC(TYPE) \ + TYPE reduc_##TYPE (TYPE *x, int count) \ + { \ + TYPE sum = 0; \ + for (int i = 0; i < count; ++i) \ + sum -= x[i]; \ + return sum; \ + } + +REDUC (int8_t) +REDUC (uint8_t) +REDUC (int16_t) +REDUC (uint16_t) +REDUC (int32_t) +REDUC (uint32_t) +REDUC (int64_t) +REDUC (uint64_t) +REDUC (float) +REDUC (double) + +/* XFAILed until we support sub-int reductions for signed types. */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.b, p[0-7]/m} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.h, p[0-7]/m} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.b, p[0-7]/m} 1 } } */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.h, p[0-7]/m} 1 } } */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.s, p[0-7]/m} 2 } } */ +/* { dg-final { scan-assembler-times {\tsub\tz[0-9]+\.d, p[0-7]/m} 2 } } */ +/* { dg-final { scan-assembler-times {\tfsub\tz[0-9]+\.s, p[0-7]/m} 1 } } */ +/* { dg-final { scan-assembler-times {\tfsub\tz[0-9]+\.d, p[0-7]/m} 1 } } */ + +/* XFAILed until we support sub-int reductions for signed types. */ +/* { dg-final { scan-assembler-times {\tsub\t} 8 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tfsub\t} 2 } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/slp_13.c b/gcc/testsuite/gcc.target/aarch64/sve/slp_13.c new file mode 100644 index 00000000000..5b875bfcc32 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/sve/slp_13.c @@ -0,0 +1,52 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -ftree-vectorize -msve-vector-bits=scalable" } */ + +#include + +#define VEC_PERM(TYPE) \ +TYPE __attribute__ ((noinline, noclone)) \ +vec_slp_##TYPE (TYPE *restrict a, int n) \ +{ \ + TYPE res = 0; \ + for (int i = 0; i < n; ++i) \ + { \ + res += a[i * 2] * 3; \ + res += a[i * 2 + 1] * 5; \ + } \ + return res; \ +} + +#define TEST_ALL(T) \ + T (int8_t) \ + T (uint8_t) \ + T (int16_t) \ + T (uint16_t) \ + T (int32_t) \ + T (uint32_t) \ + T (int64_t) \ + T (uint64_t) + +TEST_ALL (VEC_PERM) + +/* ??? We don't treat the int8_t and int16_t loops as reductions. */ +/* ??? We don't treat the uint loops as SLP. */ +/* The loop should be fully-masked. */ +/* { dg-final { scan-assembler-times {\tld1b\t} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tld1h\t} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tld1w\t} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tld1w\t} 1 } } */ +/* { dg-final { scan-assembler-times {\tld1d\t} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tld1d\t} 1 } } */ +/* { dg-final { scan-assembler-not {\tldr} { xfail *-*-* } } } */ + +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.b} 4 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.h} 4 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.s} 4 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.d} 4 } } */ + +/* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.b\n} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.h\n} 2 { xfail *-*-* } } } */ +/* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.s\n} 2 } } */ +/* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 } } */ + +/* { dg-final { scan-assembler-not {\tuqdec} } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/slp_13_run.c b/gcc/testsuite/gcc.target/aarch64/sve/slp_13_run.c new file mode 100644 index 00000000000..9799e3b59fb --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/sve/slp_13_run.c @@ -0,0 +1,28 @@ +/* { dg-do run { target aarch64_sve_hw } } */ +/* { dg-options "-O2 -ftree-vectorize" } */ + +#include "slp_13.c" + +#define N1 (103 * 2) +#define N2 (111 * 2) + +#define HARNESS(TYPE) \ + { \ + TYPE a[N2]; \ + TYPE expected = 0; \ + for (unsigned int i = 0; i < N2; ++i) \ + { \ + a[i] = i * 2 + i % 5; \ + if (i < N1) \ + expected += a[i] * (i & 1 ? 5 : 3); \ + asm volatile (""); \ + } \ + if (vec_slp_##TYPE (a, N1 / 2) != expected) \ + __builtin_abort (); \ + } + +int __attribute__ ((optimize (1))) +main (void) +{ + TEST_ALL (HARNESS) +} diff --git a/gcc/testsuite/gcc.target/aarch64/sve/slp_5.c b/gcc/testsuite/gcc.target/aarch64/sve/slp_5.c index 4e2641929ef..7ff12c58570 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/slp_5.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/slp_5.c @@ -56,3 +56,12 @@ TEST_ALL (VEC_PERM) /* { dg-final { scan-assembler-times {\tfaddv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } } */ /* { dg-final { scan-assembler-times {\tfaddv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } } */ /* { dg-final { scan-assembler-times {\tfaddv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } } */ + +/* Should be 4 and 6 respectively, if we used reductions for int8_t and + int16_t. */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.b} 2 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.h} 4 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.s} 6 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.d} 6 } } */ + +/* { dg-final { scan-assembler-not {\tuqdec} } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/sve/slp_7.c b/gcc/testsuite/gcc.target/aarch64/sve/slp_7.c index 76abbdcf8aa..9e6aa8ccbf8 100644 --- a/gcc/testsuite/gcc.target/aarch64/sve/slp_7.c +++ b/gcc/testsuite/gcc.target/aarch64/sve/slp_7.c @@ -64,3 +64,12 @@ TEST_ALL (VEC_PERM) /* { dg-final { scan-assembler-times {\tfaddv\th[0-9]+, p[0-7], z[0-9]+\.h} 4 } } */ /* { dg-final { scan-assembler-times {\tfaddv\ts[0-9]+, p[0-7], z[0-9]+\.s} 4 } } */ /* { dg-final { scan-assembler-times {\tfaddv\td[0-9]+, p[0-7], z[0-9]+\.d} 4 } } */ + +/* Should be 4 and 6 respectively, if we used reductions for int8_t and + int16_t. */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.b} 2 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.h} 4 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.s} 6 } } */ +/* { dg-final { scan-assembler-times {\twhilelo\tp[0-7]\.d} 6 } } */ + +/* { dg-final { scan-assembler-not {\tuqdec} } } */ diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 5deb7800f43..15d36b2e839 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -6893,19 +6893,42 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi, return false; } + if (slp_node) + vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node); + else + vec_num = 1; + + internal_fn cond_fn = get_conditional_internal_fn (code); + vec_loop_masks *masks = &LOOP_VINFO_MASKS (loop_vinfo); + if (!vec_stmt) /* transformation not required. */ { - if (LOOP_VINFO_CAN_FULLY_MASK_P (loop_vinfo)) - { - if (dump_enabled_p ()) - dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "can't use a fully-masked loop due to " - "reduction operation.\n"); - LOOP_VINFO_CAN_FULLY_MASK_P (loop_vinfo) = false; - } - if (first_p) vect_model_reduction_cost (stmt_info, reduc_fn, ncopies); + if (loop_vinfo && LOOP_VINFO_CAN_FULLY_MASK_P (loop_vinfo)) + { + if (cond_fn == IFN_LAST + || !direct_internal_fn_supported_p (cond_fn, vectype_in, + OPTIMIZE_FOR_SPEED)) + { + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "can't use a fully-masked loop because no" + " conditional operation is available.\n"); + LOOP_VINFO_CAN_FULLY_MASK_P (loop_vinfo) = false; + } + else if (reduc_index == -1) + { + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "can't use a fully-masked loop for chained" + " reductions.\n"); + LOOP_VINFO_CAN_FULLY_MASK_P (loop_vinfo) = false; + } + else + vect_record_loop_mask (loop_vinfo, masks, ncopies * vec_num, + vectype_in); + } STMT_VINFO_TYPE (stmt_info) = reduc_vec_info_type; return true; } @@ -6919,16 +6942,15 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi, if (code == COND_EXPR) gcc_assert (ncopies == 1); + bool masked_loop_p = LOOP_VINFO_FULLY_MASKED_P (loop_vinfo); + /* Create the destination vector */ vec_dest = vect_create_destination_var (scalar_dest, vectype_out); prev_stmt_info = NULL; prev_phi_info = NULL; - if (slp_node) - vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node); - else + if (!slp_node) { - vec_num = 1; vec_oprnds0.create (1); vec_oprnds1.create (1); if (op_type == ternary_op) @@ -7002,19 +7024,19 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi, gcc_assert (reduc_index != -1 || ! single_defuse_cycle); if (single_defuse_cycle && reduc_index == 0) - vec_oprnds0[0] = gimple_assign_lhs (new_stmt); + vec_oprnds0[0] = gimple_get_lhs (new_stmt); else vec_oprnds0[0] = vect_get_vec_def_for_stmt_copy (dts[0], vec_oprnds0[0]); if (single_defuse_cycle && reduc_index == 1) - vec_oprnds1[0] = gimple_assign_lhs (new_stmt); + vec_oprnds1[0] = gimple_get_lhs (new_stmt); else vec_oprnds1[0] = vect_get_vec_def_for_stmt_copy (dts[1], vec_oprnds1[0]); if (op_type == ternary_op) { if (single_defuse_cycle && reduc_index == 2) - vec_oprnds2[0] = gimple_assign_lhs (new_stmt); + vec_oprnds2[0] = gimple_get_lhs (new_stmt); else vec_oprnds2[0] = vect_get_vec_def_for_stmt_copy (dts[2], vec_oprnds2[0]); @@ -7025,13 +7047,33 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi, FOR_EACH_VEC_ELT (vec_oprnds0, i, def0) { tree vop[3] = { def0, vec_oprnds1[i], NULL_TREE }; - if (op_type == ternary_op) - vop[2] = vec_oprnds2[i]; + if (masked_loop_p) + { + /* Make sure that the reduction accumulator is vop[0]. */ + if (reduc_index == 1) + { + gcc_assert (commutative_tree_code (code)); + std::swap (vop[0], vop[1]); + } + tree mask = vect_get_loop_mask (gsi, masks, vec_num * ncopies, + vectype_in, i * ncopies + j); + gcall *call = gimple_build_call_internal (cond_fn, 3, mask, + vop[0], vop[1]); + new_temp = make_ssa_name (vec_dest, call); + gimple_call_set_lhs (call, new_temp); + gimple_call_set_nothrow (call, true); + new_stmt = call; + } + else + { + if (op_type == ternary_op) + vop[2] = vec_oprnds2[i]; - new_temp = make_ssa_name (vec_dest, new_stmt); - new_stmt = gimple_build_assign (new_temp, code, - vop[0], vop[1], vop[2]); - vect_finish_stmt_generation (stmt, new_stmt, gsi); + new_temp = make_ssa_name (vec_dest, new_stmt); + new_stmt = gimple_build_assign (new_temp, code, + vop[0], vop[1], vop[2]); + } + vect_finish_stmt_generation (stmt, new_stmt, gsi); if (slp_node) { @@ -7056,7 +7098,7 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi, /* Finalize the reduction-phi (set its arguments) and create the epilog reduction code. */ if ((!single_defuse_cycle || code == COND_EXPR) && !slp_node) - vect_defs[0] = gimple_assign_lhs (*vec_stmt); + vect_defs[0] = gimple_get_lhs (*vec_stmt); vect_create_epilog_for_reduction (vect_defs, stmt, reduc_def_stmt, epilog_copies, reduc_fn, phis, -- 2.11.4.GIT