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[Bug middle-end/18548] [4.0 Regression] Miscompiles code generated by Gambit-C Scheme->C compiler
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Dec 2004 14:38:54 -0000
- Subject: [Bug middle-end/18548] [4.0 Regression] Miscompiles code generated by Gambit-C Scheme->C compiler
- References: <20041118185317.18548.lucier@math.purdue.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-12-18 14:38 -------
Subject: Bug 18548
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: sayle@gcc.gnu.org 2004-12-18 14:38:44
Modified files:
gcc : ChangeLog expr.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.dg: max-1.c
Log message:
PR middle-end/18548
* expr.c (expand_expr_real_1) <MAX_EXPR>: Ensure that target, op0
and op1 are all registers (or constants) before expanding the RTL
comparison sequence [to avoid reg_overlap_mentioned (target, op1)].
* gcc.dg/max-1.c: New test case.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6873&r2=2.6874
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expr.c.diff?cvsroot=gcc&r1=1.760&r2=1.761
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4780&r2=1.4781
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/max-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18548