git.ipfire.org Git - thirdparty/gcc.git/commit

author	Richard Guenther <rguenther@suse.de>
	Fri, 15 Feb 2008 15:24:19 +0000 (15:24 +0000)
committer	Richard Biener <rguenth@gcc.gnu.org>
	Fri, 15 Feb 2008 15:24:19 +0000 (15:24 +0000)
commit	2e58df6ecf3d060e3a8bd95f898baf89f733e1f5
tree	84bac3426747a9ff72e762dc1ff06bfc9e4f61f7	tree
parent	508515b0277f2adadc610acb2dd14f769ba992ff	commit \| diff

re PR tree-optimization/35164 (Unable to coalesce ab SSA_NAMEs)

2008-02-15 Richard Guenther <rguenther@suse.de>
Zdenek Dvorak <ook@ucw.cz>

PR tree-optimization/35164
* tree-flow.h (stmt_references_abnormal_ssa_name): Declare.
* tree-dfa.c (stmt_references_abnormal_ssa_name): New function.
* tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_vars):
Only propagate addresses which do not have abnormal SSA_NAMEs
in their operands.

* g++.dg/torture/pr35164-1.C: New testcase.
* g++.dg/torture/pr35164-2.C: Likewise.

Co-Authored-By: Zdenek Dvorak <ook@ucw.cz>
From-SVN: r132345

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/g++.dg/torture/pr35164-1.C	[new file with mode: 0644]	blob
gcc/testsuite/g++.dg/torture/pr35164-2.C	[new file with mode: 0644]	blob
gcc/tree-dfa.c		diff \| blob \| blame \| history
gcc/tree-flow.h		diff \| blob \| blame \| history
gcc/tree-ssa-forwprop.c		diff \| blob \| blame \| history