[Bug tree-optimization/21705] FRE does not eliminate a redundant pure call.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-25 
18:53 -------
Subject: Bug 21705

CVSROOT:        /cvs/gcc
Module name:    gcc
Changes by:     [EMAIL PROTECTED]       2005-05-25 18:53:25

Modified files:
        gcc            : ChangeLog tree-ssa-pre.c 
Added files:
        gcc/testsuite/gcc.dg/tree-ssa: ssa-pre-14.c 

Log message:
        2005-05-25  Daniel Berlin  <[EMAIL PROTECTED]>
        
        Fix PR tree-optimization/21705
        
        * tree-ssa-pre.c (in_fre): New static variable.
        (create_value_expr_from): Recursively value number reference ops
        in argument lists.
        (can_value_number_call): Temporary restrict only exists for
        PRE, not FRE.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8896&r2=2.8897
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.90&r2=2.91
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-14.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21705