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| author | Andrew Pinski <apinski@marvell.com> | 2021-11-09 09:56:10 +0000 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2021-11-09 19:01:57 +0000 |
| commit | f7844b6a777cb47fec7208d7bd594f6ce66f1daa (patch) | |
| tree | 1ce4db903a8a2080883ecb15bbc34474f9edaf97 /gcc | |
| parent | 56af35de3d11960100996b96034dc9ccd7c75ca3 (diff) | |
| download | gcc-f7844b6a777cb47fec7208d7bd594f6ce66f1daa.zip gcc-f7844b6a777cb47fec7208d7bd594f6ce66f1daa.tar.gz gcc-f7844b6a777cb47fec7208d7bd594f6ce66f1daa.tar.bz2 | |
[Committed] Fix tree-optimization/103152: Still one more -signed1bit issue
When I fixed PR 102622, I accidently left behind a TYPE_PRECISION
check which I had there for checking before hand. This check
is not needed as the code will handle it correctly anyways.
Committed as obvious after a bootstrap/test on x86_64-linux-gnu.
PR tree-optimization/10352
gcc/ChangeLog:
* match.pd: Remove check of TYPE_PRECISION for
the a?0:pow2 case.
gcc/testsuite/ChangeLog:
* gcc.c-torture/execute/pr10352-1.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/match.pd | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr10352-1.c | 12 |
2 files changed, 13 insertions, 2 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index cdab5e5..986b052 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -4056,8 +4056,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (integer_onep (@2)) (convert (bit_xor (convert:boolean_type_node @0) { booltrue; } ))) /* a ? powerof2cst : 0 -> (!a) << (log2(powerof2cst)) */ - (if (INTEGRAL_TYPE_P (type) && integer_pow2p (@2) - && TYPE_PRECISION (type) != 1) + (if (INTEGRAL_TYPE_P (type) && integer_pow2p (@2)) (with { tree shift = build_int_cst (integer_type_node, tree_log2 (@2)); } diff --git a/gcc/testsuite/gcc.c-torture/execute/pr10352-1.c b/gcc/testsuite/gcc.c-torture/execute/pr10352-1.c new file mode 100644 index 0000000..babb9d4 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr10352-1.c @@ -0,0 +1,12 @@ +/* this is another case where phiopt + would create -signed1bit which is undefined. */ +struct { + int a:1; +} b; +int *c = (int *)&b, d; +int main() { + d = c && (b.a = (d < 0) ^ 3); + if (d != 1) + __builtin_abort(); + return 0; +} |