[Bug target/21297] [4.0/4.1 Regression] buf[i+i]=0 stores buf[i] when -O2

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-03 
13:01 -------
Subject: Bug 21297

CVSROOT:        /cvs/gcc
Module name:    gcc
Changes by:     [EMAIL PROTECTED]       2005-05-03 12:58:13

Modified files:
        gcc            : ChangeLog 
        gcc/config/i386: i386.c 
        gcc/testsuite  : ChangeLog 
Added files:
        gcc/testsuite/gcc.c-torture/execute: 20050502-2.c 

Log message:
        PR target/21297
        * config/i386/i386.c (legitimize_address): When canonicalizing
        ASHIFT into MULT, multiply by 1 << shift_count instead of
        1 << log2 (shift_count).
        
        * gcc.c-torture/execute/20050502-2.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8572&r2=2.8573
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.c.diff?cvsroot=gcc&r1=1.816&r2=1.817
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5433&r2=1.5434
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20050502-2.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21297