[Bug optimization/12260] [3.4 Regression] ICE in output_operand: invalid expression as operand

[cvs-commit at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12260



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-10-11 21:06 -------
Subject: Bug 12260

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2003-10-11 21:06:19

Modified files:
	gcc            : ChangeLog simplify-rtx.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/compile: 20031011-2.c 

Log message:
	PR optimization/12260
	* simplify-rtx.c (simplify_unary_operation): Simplify all unary
	operations through CONST nodes.  Optimize (neg (plus X C)) as
	(minus -C X) for constant values C.
	(simplify_binary_operation): Optimize (minus (neg X) C) as
	(minus -C X) for constant values C.
	(simplify_plus_minus): Avoid creating (neg (const (plus X C)),
	instead create (minus -C X).
	
	* gcc.c-torture/compile/20031011-2.c: New test case.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1385&r2=2.1386
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/simplify-rtx.c.diff?cvsroot=gcc&r1=1.162&r2=1.163
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3113&r2=1.3114
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/20031011-2.c.diff?cvsroot=gcc&r1=NONE&r2=1.1