[Bug rtl-optimization/53519] [4.7/4.8 Regression] ice in do_SUBST, at combine.c:707

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53519

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-30 
06:58:05 UTC ---
Author: jakub
Date: Wed May 30 06:58:00 2012
New Revision: 188002

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188002
Log:
    PR rtl-optimization/53519
    * combine.c (simplify_shift_const_1) <case NOT>: Use constm1_rtx
    instead of GEN_INT (GET_MODE_MASK (mode)) as second operand of XOR.

    * gcc.c-torture/compile/pr53519.c: New test.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/compile/pr53519.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/combine.c
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog