[Bug tree-optimization/22278] gcc -O2 discards cast to volatile

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-11 23:56 -------
Subject: Bug 22278

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	apple-local-200502-branch
Changes by:	mrs@gcc.gnu.org	2005-08-11 23:56:06

Modified files:
	gcc            : gimplify.c tree-ssa.c ChangeLog 

Log message:
	PR tree-opt/22278
	* gimplify.c (gimplify_expr): Use main variant type for the temp
	destination for a discarded volatile read.
	* tree-ssa.c (tree_ssa_useless_type_conversion_1): Don't elide
	casts between non-void types that change volatility.
	Radar 4098854

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gimplify.c.diff?cvsroot=gcc&only_with_tag=apple-local-200502-branch&r1=2.111.2.5&r2=2.111.2.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa.c.diff?cvsroot=gcc&only_with_tag=apple-local-200502-branch&r1=2.76.4.2&r2=2.76.4.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=apple-local-200502-branch&r1=2.7489.2.18&r2=2.7489.2.19



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22278