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re PR rtl-optimization/41917 (Strange athrithmetic result with -O3)
authorJakub Jelinek <jakub@redhat.com>
Tue, 3 Nov 2009 22:36:39 +0000 (23:36 +0100)
committerJakub Jelinek <jakub@gcc.gnu.org>
Tue, 3 Nov 2009 22:36:39 +0000 (23:36 +0100)
commit24d179b4c7717ceeceef16166064bd4a3933cb11
tree219b8371e4eb10703f1ef240e27ca85c4e4861a9tree
parent0b94d8b285da86f4e68c396a285a2846df3bdff7commit | diff
re PR rtl-optimization/41917 (Strange athrithmetic result with -O3)

PR rtl-optimization/41917
* rtlanal.c (num_sign_bit_copies1) <case UMOD>: If sign bit of second
operand isn't known to be 0, return 1.

* gcc.c-torture/execute/pr41917.c: New test.

From-SVN: r153874
gcc/ChangeLog diff | blob | blame | history
gcc/rtlanal.c diff | blob | blame | history
gcc/testsuite/ChangeLog diff | blob | blame | history
gcc/testsuite/gcc.c-torture/execute/pr41917.c [new file with mode: 0644] blob
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