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| author | Richard Biener <rguenther@suse.de> | 2019-11-18 12:41:11 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2019-11-18 12:41:11 +0000 |
| commit | 5be106b86006e00c80bf846a172b2b69b40d10ef (patch) | |
| tree | 8b459b41b4cc1967d62c341a286cd10c4ab66122 /gcc | |
| parent | 3d3a96a26eff2367d6573b30683c3c2945f443eb (diff) | |
| download | gcc-5be106b86006e00c80bf846a172b2b69b40d10ef.zip gcc-5be106b86006e00c80bf846a172b2b69b40d10ef.tar.gz gcc-5be106b86006e00c80bf846a172b2b69b40d10ef.tar.bz2 | |
re PR tree-optimization/92558 (Miscompare of 554.roms_r with -Ofast -march=znver2 -flto since r278289)
2019-11-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/92558
* tree-vect-loop.c (vect_create_epilog_for_reduction): When
reducting the width of a reduction vector def update new_phis.
* gcc.dg/vect/pr92558.c: New testcase.
From-SVN: r278400
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr92558.c | 23 | ||||
| -rw-r--r-- | gcc/tree-vect-loop.c | 1 |
4 files changed, 35 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3d19783..b240802 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-11-18 Richard Biener <rguenther@suse.de> + + PR tree-optimization/92558 + * tree-vect-loop.c (vect_create_epilog_for_reduction): When + reducting the width of a reduction vector def update new_phis. + 2019-11-18 Szabolcs Nagy <szabolcs.nagy@arm.com> * configure.ac (gcc_cv_target_ldbl128): Set for powerpc*-*-linux-musl* diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8773d50..b6330cb 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2019-11-18 Richard Biener <rguenther@suse.de> + + PR tree-optimization/92558 + * gcc.dg/vect/pr92558.c: New testcase. + 2019-11-18 Martin Liska <mliska@suse.cz> PR ipa/92529 diff --git a/gcc/testsuite/gcc.dg/vect/pr92558.c b/gcc/testsuite/gcc.dg/vect/pr92558.c new file mode 100644 index 0000000..1d24fa0 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr92558.c @@ -0,0 +1,23 @@ +/* { dg-additional-options "-mavx2" { target avx2_runtime } } */ + +void __attribute__((noipa)) +foo (int * __restrict wsum, int * __restrict cff, int * __restrict weight) +{ + for (int i = 0; i < 16; ++i) + { + *wsum += weight[2*i+0]; + *cff += weight[2*i+1]; + } +} + +int main() +{ + int weight[32]; + for (int i = 0; i < 32; ++i) + weight[i] = i; + int wsum = 0, cff = 0; + foo (&wsum, &cff, weight); + if (wsum != 240 || cff != 256) + __builtin_abort (); + return 0; +} diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 7a58dfc..02e6bfb 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -5198,6 +5198,7 @@ vect_create_epilog_for_reduction (stmt_vec_info stmt_info, new_temp = make_ssa_name (vectype1); epilog_stmt = gimple_build_assign (new_temp, code, dst1, dst2); gsi_insert_before (&exit_gsi, epilog_stmt, GSI_SAME_STMT); + new_phis[0] = epilog_stmt; } if (reduce_with_shift && !slp_reduc) |