[Bug rtl-optimization/28726] [4.1 regression] -fsched2-use-superblock produces wrong code

[ebotcazou at gcc dot gnu dot org]

------- Comment #5 from ebotcazou at gcc dot gnu dot org  2006-09-11 19:28 -------
Subject: Bug 28726

Author: ebotcazou
Date: Mon Sep 11 19:28:41 2006
New Revision: 116856

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116856
Log:
        PR rtl-optimization/28726
        * sched-deps.c (sched_analyze_reg): New function extracted from...
        (sched_analyze_1): ...here.  Call it to analyze references to
        registers.  Treat again writes to a stack register as writing to the
        register.
        (sched_analyze_2): ...and here.  Call it to analyze references to
        registers.  Treat again reads of a stack register as reading the
        register.


Added:
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/pr28726.c
Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/sched-deps.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28726