diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2023-04-22 10:24:29 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2023-04-22 10:24:29 +0200 |
| commit | c58c0771b7a3dbd2a00cd4b6ca2301d74b6cd4e2 (patch) | |
| tree | 8d6a668bd66c26aa493d7963b1d08d93d88807df | |
| parent | cda246f8b421ba855a9e5f9d7bfcd0fc49b7bd4b (diff) | |
| download | gcc-c58c0771b7a3dbd2a00cd4b6ca2301d74b6cd4e2.zip gcc-c58c0771b7a3dbd2a00cd4b6ca2301d74b6cd4e2.tar.gz gcc-c58c0771b7a3dbd2a00cd4b6ca2301d74b6cd4e2.tar.bz2 | |
match.pd: Fix fneg/fadd optimization [PR109583]
The following testcase ICEs on x86, foo function since my r14-22
improvement, but bar already since r13-4122. The problem is the same,
in the if expression related_vector_mode is called and that starts with
gcc_assert (VECTOR_MODE_P (vector_mode));
but nothing in the fneg/fadd match.pd pattern actually checks if the
VEC_PERM type has VECTOR_MODE_P (vec_mode). In this case it has BLKmode
and so it ICEs.
The following patch makes sure we don't ICE on it.
2023-04-22 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/109583
* match.pd (fneg/fadd simplify): Don't call related_vector_mode
if vec_mode is not VECTOR_MODE_P.
* gcc.dg/pr109583.c: New test.
| -rw-r--r-- | gcc/match.pd | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr109583.c | 25 |
2 files changed, 27 insertions, 1 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index b7d7a5d..e89ba57 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -8103,7 +8103,8 @@ and, poly_uint64 wide_nunits; scalar_mode inner_mode = GET_MODE_INNER (vec_mode); } - (if (sel.series_p (0, 2, 0, 2) + (if (VECTOR_MODE_P (vec_mode) + && sel.series_p (0, 2, 0, 2) && sel.series_p (1, 2, nelts + 1, 2) && GET_MODE_2XWIDER_MODE (inner_mode).exists (&wide_elt_mode) && multiple_p (GET_MODE_NUNITS (vec_mode), 2, &wide_nunits) diff --git a/gcc/testsuite/gcc.dg/pr109583.c b/gcc/testsuite/gcc.dg/pr109583.c new file mode 100644 index 0000000..e3fea3d --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr109583.c @@ -0,0 +1,25 @@ +/* PR tree-optimization/109583 */ +/* { dg-do compile } */ +/* { dg-options "-O1 -Wno-psabi" } */ +/* { dg-additional-options "-mno-avx" { target i?86-*-* x86_64-*-* } } */ + +typedef float v8sf __attribute__((vector_size (8 * sizeof (float)))); +typedef int v8si __attribute__((vector_size (8 * sizeof (int)))); + +#if __SIZEOF_INT__ == __SIZEOF_FLOAT__ +v8sf +foo (v8sf x, v8sf y) +{ + v8sf a = x - y; + v8sf b = x + y; + return __builtin_shuffle (a, b, (v8si) { 0, 9, 2, 11, 4, 13, 6, 15 }); +} + +v8sf +bar (v8sf x, v8sf y) +{ + v8sf a = x + y; + v8sf b = x - y; + return __builtin_shuffle (a, b, (v8si) { 0, 9, 2, 11, 4, 13, 6, 15 }); +} +#endif |