[Bug target/20421] 387 mode switching clobbers flags

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-06 05:30 -------
Subject: Bug 20421

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	uros@gcc.gnu.org	2005-04-06 05:29:55

Modified files:
	gcc            : ChangeLog 
	gcc/config/i386: i386.md 

Log message:
	PR target/20421
	* config/i386/i386.md (frndintxf2_floor, frndintxf2_ceil)
	(frndintxf2_trunc, frndintxf2_mask_pm): Add FLAGS_REG clobber.
	Allocate local stack slots here.  Set ix86_optimize_mode_switching.
	flag here. Implement using define_insn_and_split.
	(frndintxf2_floor_i387, frndintxf2_ceil_i387, frndintxf2_trunc_i387)
	(frndintxf2_mask_pm_i387): New insn patterns.
	
	(floorsf2, floordf2, floorxf2): Remove local stack slot allocations.
	Do not set ix86_optimize_mode_switching flag.
	(ceilsf2, ceildf2, ceilxf2): Same.
	(btruncsf2, btruncdf2, btruncxf2): Same.
	(nearbyintsf2, nearbyintdf2, nearbyintxf2): Same.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.136&r2=2.7592.2.137
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.618.4.2&r2=1.618.4.3



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20421