[Bug middle-end/46019] [4.3/4.4/4.5/4.6 Regression] x / (0x200000000ULL << y) miscompilation with 32-bit HWI

jakub at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Oct 18 09:57:00 GMT 2010


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46019

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-10-18 09:57:05 UTC ---
Author: jakub
Date: Mon Oct 18 09:57:02 2010
New Revision: 165617

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165617
Log:
    PR middle-end/46019
    * fold-const.c (fold_binary_loc): If integer_pow2p has
    TREE_INT_CST_LOW zero, look at TREE_INT_CST_HIGH.

    * gcc.c-torture/execute/pr46019.c: New test.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.c-torture/execute/pr46019.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/fold-const.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog



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