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| author | Jakub Jelinek <jakub@redhat.com> | 2022-02-11 20:27:23 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-02-11 20:27:23 +0100 |
| commit | 9355a8c35883b5125851bb9b4169a1a1cd8e343f (patch) | |
| tree | 2b46e6c5c3b5318cb963db77da0ea979d6be4981 | |
| parent | b56ad95854f0b007afda60c057f10b04666953c9 (diff) | |
| download | gcc-9355a8c35883b5125851bb9b4169a1a1cd8e343f.zip gcc-9355a8c35883b5125851bb9b4169a1a1cd8e343f.tar.gz gcc-9355a8c35883b5125851bb9b4169a1a1cd8e343f.tar.bz2 | |
match.pd: Fix up (X & Y) CMP 0 -> X CMP2 ~Y simplifications [PR104499]
The following testcase ICEs on x86_64-linux, because match.pd emits
there a NOP_EXPR cast from int*8 vector type with BLKmode to
unsigned*8 vector type with BLKmode and vec-lowering isn't prepared
to handle such casts.
Fixed by using VIEW_CONVERT_EXPR instead.
2022-02-11 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/104499
* match.pd ((X & Y) CMP 0 -> X CMP2 ~Y): Use view_convert instead
of convert.
* gcc.c-torture/compile/pr104499.c: New test.
| -rw-r--r-- | gcc/match.pd | 2 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr104499.c | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 0f32623..10f6228 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -5778,7 +5778,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (TYPE_UNSIGNED (TREE_TYPE (@1))) (icmp @0 { csts; }) (with { tree utype = unsigned_type_for (TREE_TYPE (@1)); } - (icmp (convert:utype @0) { csts; })))))))) + (icmp (view_convert:utype @0) { csts; })))))))) /* When one argument is a constant, overflow detection can be simplified. Currently restricted to single use so as not to interfere too much with diff --git a/gcc/testsuite/gcc.c-torture/compile/pr104499.c b/gcc/testsuite/gcc.c-torture/compile/pr104499.c new file mode 100644 index 0000000..e5d5cdd --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr104499.c @@ -0,0 +1,11 @@ +/* PR tree-optimization/104499 */ + +typedef int __attribute__((__vector_size__ (8 * sizeof (int)))) V; + +V v; + +void +foo (void) +{ + v = ((1 | v) != 1); +} |