[Bug tree-optimization/17739] [4.0 Regression] tree-optimizers extend the lifetime of a hard register variable

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

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-09-30 01:22 -------
Subject: Bug 17739

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2004-09-30 01:22:07

Modified files:
	gcc            : ChangeLog gimplify.c tree-gimple.c 
	                 tree-gimple.h tree-outof-ssa.c 
	                 tree-pretty-print.c tree-ssa-copy.c 
	                 tree-ssa-copyrename.c tree-ssa-pre.c tree-ssa.c 
	                 tree.h 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: asm-3.c 

Log message:
	PR 17739
	* tree-gimple.c (is_gimple_reg): Reject hard registers.
	(is_gimple_asm_val): New.
	* tree-gimple.h (is_gimple_asm_val): Declare.
	* gimplify.c (gimplify_asm_expr): Use it.
	* tree-pretty-print.c (print_declaration): Dump hard regs.
	* tree-outof-ssa.c (check_replaceable): Don't check for hard regs.
	* tree-ssa-copyrename.c (copy_rename_partition_coalesce): Likewise.
	* tree-ssa-pre.c (is_undefined_value): Likewise.
	* tree-ssa-copy.c (may_propagate_copy): Likewise.
	(may_propagate_copy_into_asm): Protect DECL_HARD_REGISTER.
	* tree-ssa.c (warn_uninit): Likewise.
	* tree.h (DECL_HARD_REGISTER): Check for VAR_DECL.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5688&r2=2.5689
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gimplify.c.diff?cvsroot=gcc&r1=2.81&r2=2.82
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-gimple.c.diff?cvsroot=gcc&r1=2.27&r2=2.28
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-gimple.h.diff?cvsroot=gcc&r1=2.17&r2=2.18
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-outof-ssa.c.diff?cvsroot=gcc&r1=2.24&r2=2.25
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-pretty-print.c.diff?cvsroot=gcc&r1=2.43&r2=2.44
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-copy.c.diff?cvsroot=gcc&r1=2.17&r2=2.18
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-copyrename.c.diff?cvsroot=gcc&r1=2.17&r2=2.18
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.43&r2=2.44
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa.c.diff?cvsroot=gcc&r1=2.43&r2=2.44
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.h.diff?cvsroot=gcc&r1=1.633&r2=1.634
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/asm-3.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17739