[Bug middle-end/36753] [4.3/4.4 Regression] Forward propagation interacts badly with global register variable

[bonzini at gcc dot gnu dot org]

------- Comment #12 from bonzini at gnu dot org  2008-07-17 09:20 -------
Subject: Bug 36753

Author: bonzini
Date: Thu Jul 17 09:19:31 2008
New Revision: 137915

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137915
Log:
gcc:
2008-07-17  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/36753
        * fwprop.c (use_killed_between): Don't shortcut
        single-definition global registers.

gcc/testsuite:
2008-07-17  Paolo Bonzini  <bonzini@gnu.org>

        PR rtl-optimization/36753
        * gcc.target/i386/pr36753.c: New.


Added:
    branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr36753.c
      - copied unchanged from r137913,
trunk/gcc/testsuite/gcc.target/i386/pr36753.c
Modified:
    branches/gcc-4_3-branch/gcc/ChangeLog
    branches/gcc-4_3-branch/gcc/fwprop.c
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36753