From d5a216fa21f6c67e75a91b7063d1767cff00138b Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 2 Mar 2017 10:19:28 +0100 Subject: [PATCH] re PR tree-optimization/79345 (passing yet-uninitialized member as argument to base class constructor should warn (-Wunitialized)) PR tree-optimization/79345 * gensupport.h (struct pattern_stats): Add min_scratch_opno field. * gensupport.c (get_pattern_stats_1) : Update it. (get_pattern_stats): Initialize it. * genemit.c (gen_expand): Verify match_scratch numbers come after match_operand/match_dup numbers. * config/i386/i386.md (mul3_highpart): Swap match_dup and match_scratch numbers. * config/i386/sse.md (avx2_gathersi, avx2_gatherdi): Likewise. * config/s390/s390.md (trunctdsd2): Likewise. From-SVN: r245833 --- gcc/ChangeLog | 14 ++++++++++++++ gcc/config/i386/i386.md | 6 +++--- gcc/config/i386/sse.md | 12 ++++++------ gcc/config/s390/s390.md | 8 ++++---- gcc/genemit.c | 8 +++++--- gcc/gensupport.c | 5 +++++ gcc/gensupport.h | 3 ++- 7 files changed, 39 insertions(+), 17 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5bd3094e3aa..0909183385f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,17 @@ +2017-03-02 Jakub Jelinek + + PR tree-optimization/79345 + * gensupport.h (struct pattern_stats): Add min_scratch_opno field. + * gensupport.c (get_pattern_stats_1) : Update it. + (get_pattern_stats): Initialize it. + * genemit.c (gen_expand): Verify match_scratch numbers come after + match_operand/match_dup numbers. + * config/i386/i386.md (mul3_highpart): Swap match_dup and + match_scratch numbers. + * config/i386/sse.md (avx2_gathersi, avx2_gatherdi): + Likewise. + * config/s390/s390.md (trunctdsd2): Likewise. + 2017-03-02 Richard Biener * wide-int.h (wide_int_storage::operator=): Implement in terms diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 23f2ea022db..f23c2d54cd8 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -7364,11 +7364,11 @@ (match_operand:SWI48 1 "nonimmediate_operand")) (any_extend: (match_operand:SWI48 2 "register_operand"))) - (match_dup 4)))) - (clobber (match_scratch:SWI48 3)) + (match_dup 3)))) + (clobber (match_scratch:SWI48 4)) (clobber (reg:CC FLAGS_REG))])] "" - "operands[4] = GEN_INT (GET_MODE_BITSIZE (mode));") + "operands[3] = GEN_INT (GET_MODE_BITSIZE (mode));") (define_insn "*muldi3_highpart_1" [(set (match_operand:DI 0 "register_operand" "=d") diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md index c69bcfe9bf3..a6f1de79c4b 100644 --- a/gcc/config/i386/sse.md +++ b/gcc/config/i386/sse.md @@ -18873,7 +18873,7 @@ (unspec:VEC_GATHER_MODE [(match_operand:VEC_GATHER_MODE 1 "register_operand") (mem: - (match_par_dup 7 + (match_par_dup 6 [(match_operand 2 "vsib_address_operand") (match_operand: 3 "register_operand") @@ -18881,10 +18881,10 @@ (mem:BLK (scratch)) (match_operand:VEC_GATHER_MODE 4 "register_operand")] UNSPEC_GATHER)) - (clobber (match_scratch:VEC_GATHER_MODE 6))])] + (clobber (match_scratch:VEC_GATHER_MODE 7))])] "TARGET_AVX2" { - operands[7] + operands[6] = gen_rtx_UNSPEC (Pmode, gen_rtvec (3, operands[2], operands[3], operands[5]), UNSPEC_VSIBADDR); }) @@ -18934,7 +18934,7 @@ (unspec:VEC_GATHER_MODE [(match_operand: 1 "register_operand") (mem: - (match_par_dup 7 + (match_par_dup 6 [(match_operand 2 "vsib_address_operand") (match_operand: 3 "register_operand") @@ -18942,10 +18942,10 @@ (mem:BLK (scratch)) (match_operand: 4 "register_operand")] UNSPEC_GATHER)) - (clobber (match_scratch:VEC_GATHER_MODE 6))])] + (clobber (match_scratch:VEC_GATHER_MODE 7))])] "TARGET_AVX2" { - operands[7] + operands[6] = gen_rtx_UNSPEC (Pmode, gen_rtvec (3, operands[2], operands[3], operands[5]), UNSPEC_VSIBADDR); }) diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md index cbf8c0a1ed6..7d2659e884b 100644 --- a/gcc/config/s390/s390.md +++ b/gcc/config/s390/s390.md @@ -5074,15 +5074,15 @@ (define_expand "trunctdsd2" [(parallel - [(set (match_dup 3) + [(set (match_dup 2) (float_truncate:DD (match_operand:TD 1 "register_operand" ""))) (unspec:DI [(const_int DFP_RND_PREP_FOR_SHORT_PREC)] UNSPEC_ROUND) - (clobber (match_scratch:TD 2 ""))]) + (clobber (match_scratch:TD 3 ""))]) (set (match_operand:SD 0 "register_operand" "") - (float_truncate:SD (match_dup 3)))] + (float_truncate:SD (match_dup 2)))] "TARGET_HARD_DFP" { - operands[3] = gen_reg_rtx (DDmode); + operands[2] = gen_reg_rtx (DDmode); }) ; diff --git a/gcc/genemit.c b/gcc/genemit.c index 4ef29e9f216..7bf745d1727 100644 --- a/gcc/genemit.c +++ b/gcc/genemit.c @@ -448,6 +448,10 @@ gen_expand (md_rtx_info *info) /* Find out how many operands this function has. */ get_pattern_stats (&stats, XVEC (expand, 1)); + if (stats.min_scratch_opno != -1 + && stats.min_scratch_opno <= MAX (stats.max_opno, stats.max_dup_opno)) + fatal_at (info->loc, "define_expand for %s needs to have match_scratch " + "numbers above all other operands", XSTR (expand, 0)); /* Output the function name and argument declarations. */ printf ("rtx\ngen_%s (", XSTR (expand, 0)); @@ -479,8 +483,6 @@ gen_expand (md_rtx_info *info) make a local variable. */ for (i = stats.num_generator_args; i <= stats.max_dup_opno; i++) printf (" rtx operand%d;\n", i); - for (; i <= stats.max_scratch_opno; i++) - printf (" rtx operand%d ATTRIBUTE_UNUSED;\n", i); printf (" rtx_insn *_val = 0;\n"); printf (" start_sequence ();\n"); @@ -516,7 +518,7 @@ gen_expand (md_rtx_info *info) (unless we aren't going to use them at all). */ if (XVEC (expand, 1) != 0) { - for (i = 0; i < stats.num_operand_vars; i++) + for (i = 0; i <= MAX (stats.max_opno, stats.max_dup_opno); i++) { printf (" operand%d = operands[%d];\n", i, i); printf (" (void) operand%d;\n", i); diff --git a/gcc/gensupport.c b/gcc/gensupport.c index cef0a0c83c8..874e677fa00 100644 --- a/gcc/gensupport.c +++ b/gcc/gensupport.c @@ -3000,6 +3000,10 @@ get_pattern_stats_1 (struct pattern_stats *stats, rtx x) break; case MATCH_SCRATCH: + if (stats->min_scratch_opno == -1) + stats->min_scratch_opno = XINT (x, 0); + else + stats->min_scratch_opno = MIN (stats->min_scratch_opno, XINT (x, 0)); stats->max_scratch_opno = MAX (stats->max_scratch_opno, XINT (x, 0)); break; @@ -3032,6 +3036,7 @@ get_pattern_stats (struct pattern_stats *stats, rtvec pattern) stats->max_opno = -1; stats->max_dup_opno = -1; + stats->min_scratch_opno = -1; stats->max_scratch_opno = -1; stats->num_dups = 0; diff --git a/gcc/gensupport.h b/gcc/gensupport.h index 693166f53a1..5db6b0f0a30 100644 --- a/gcc/gensupport.h +++ b/gcc/gensupport.h @@ -199,7 +199,8 @@ struct pattern_stats /* The largest match_dup, match_op_dup or match_par_dup number found. */ int max_dup_opno; - /* The largest match_scratch number found. */ + /* The smallest and largest match_scratch number found. */ + int min_scratch_opno; int max_scratch_opno; /* The number of times match_dup, match_op_dup or match_par_dup appears -- 2.30.2