[Bug bootstrap/12269] Mainline failed to bootstrap on Linux/ia64

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12269



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-09-16 17:16 -------
Subject: Bug 12269

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2003-09-16 17:16:25

Modified files:
	gcc            : ChangeLog simplify-rtx.c cfgloopanal.c 

Log message:
	PR bootstrap/12269
	* simplify-rtx.c (simplify_gen_relational): Allow the cmp_mode
	argument to be VOIDmode, taking the mode of the comparison from
	the operands.  Only call simplify_relational_operation if we
	know the mode of the comparison.  Honor FLOAT_STORE_FLAG_VALUE
	if comparison has a floating point result.  Ensure that the
	result is always of the specified mode.
	(simplify_replace_rtx): Simplify call to simplify_gen_relational.
	(simplify_unary_operation): Ensure the correct mode and cmp_mode
	are always passed to simplify_gen_relational.  Simplify NOT of
	comparison operator in any mode, not just BImode.
	(simplify_ternary_operation): Correct tests on the return value
	of simplify_relational_operation to use const_true_rtx, not
	const1_rtx.  Abort if it ever returns a non-constant result.
	
	* cfgloopanal.c (count_strange_loop_iterations): Use the function
	simplify_relational_operation, not simplify_gen_relational, if
	we're only interested in constant comparisons and will ignore
	non-constant results.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1070&r2=2.1071
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/simplify-rtx.c.diff?cvsroot=gcc&r1=1.158&r2=1.159
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloopanal.c.diff?cvsroot=gcc&r1=1.12&r2=1.13