[Bug rtl-optimization/51821] [4.5/4.6/4.7 Regression] 64bit > 32bit conversion produces incorrect results with optimizations

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51821

--- Comment #19 from uros at gcc dot gnu.org 2012-01-15 19:35:20 UTC ---
Author: uros
Date: Sun Jan 15 19:35:15 2012
New Revision: 183198

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183198
Log:
    PR rtl-optimization/51821
    * recog.c (peep2_find_free_register): Determine clobbered registers
    from insn pattern.

testsuite/ChangeLog:

    PR rtl-optimization/51821
    * gcc.dg/pr51821.c: New test.


Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr51821.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/recog.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog