[Bug rtl-optimization/42269] [4.4/4.5 Regression] Extra sign extension instructions generated

[rth at gcc dot gnu dot org]

------- Comment #3 from rth at gcc dot gnu dot org  2009-12-08 00:44 -------
Subject: Bug 42269

Author: rth
Date: Tue Dec  8 00:44:28 2009
New Revision: 155071

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155071
Log:
        PR rtl-opt/42269
        * combine.c (setup_incoming_promotions): Improve the conditions
        under which we respect the promotions applied.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr42269-2.c
    trunk/gcc/testsuite/gcc.target/alpha/pr42269-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42269