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[Bug middle-end/20539] [4.0/4.1 Regression] ICE in simplify_subreg, at simplify-rtx.c:3674


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-03-21 03:30 -------
Subject: Bug 20539

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2005-03-21 03:30:08

Modified files:
	gcc            : ChangeLog fold-const.c c-common.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/compile: pr13066-1.c pr20539-1.c 
	gcc/testsuite/g++.dg/opt: pr13066-1.C 

Log message:
	PR middle-end/20539
	* fold-const.c (fold_binary): Fix type mismatch between
	TRUTH_{AND,OR,XOR}_EXPR nodes an their operands' types.
	(fold_binary) <TRUTH_XOR_EXPR>: Avoid calling invert_truthvalue
	for non-truth-valued expressions.
	
	* c-common.c (c_common_truthvalue_conversion): Handle ERROR_MARK
	and FUNCTION_DECL in the main switch.
	<TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR, TRUTH_AND_EXPR, TRUTH_OR_EXPR,
	TRUTH_XOR_EXPR>: When changing the result type of these tree nodes,
	we also need to convert their operands to match.
	<TRUTH_NOT_EXPR>: Likewise.
	
	* gcc.c-torture/compile/pr13066-1.c: New test case.
	* gcc.c-torture/compile/pr20539-1.c: Likewise.
	* g++.dg/opt/pr13066-1.C: Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7927&r2=2.7928
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.544&r2=1.545
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.614&r2=1.615
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5185&r2=1.5186
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/pr13066-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/compile/pr20539-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/pr13066-1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20539


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