[Bug rtl-optimization/42216] [4.5 Regression] changes in scheduling regress 464.h264ref 20%

[bernds at gcc dot gnu dot org]

------- Comment #27 from bernds at gcc dot gnu dot org  2010-03-17 09:25 -------
Subject: Bug 42216

Author: bernds
Date: Wed Mar 17 09:25:35 2010
New Revision: 157511

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157511
Log:
        PR rtl-optimization/42216
        * regrename.c (create_new_chain): New function, broken out from...
        (scan_rtx_reg): ... here.  Call it.  Handle the case where we are
        appending a use to an empty chain.
        (build_def_use): Remove previous changes that convert OP_INOUT to
        OP_OUT operands; instead detect the case where an OP_INOUT operand
        uses a previously untracked register and create an empty chain for
        it.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/regrename.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42216