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2007-12-13 Richard Guenther <rguenther@suse.de>
authorrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 13 Dec 2007 14:22:23 +0000 (14:22 +0000)
committerrguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 13 Dec 2007 14:22:23 +0000 (14:22 +0000)
commita9b2282eebaf6b66b3e00da270dd7b05a45ba33d
treee093a6851a7defde4e02f4c80a5cdb3acacf2c70
parent959a896efc30fe8559634be92241764e43a9ca11
2007-12-13  Richard Guenther  <rguenther@suse.de>

PR tree-optimization/34450
* params.def (PARAM_SCCVN_MAX_SCC_SIZE): New param.
* invoke.texi (sccvn-max-scc-size): Document.
* Makefile.in (tree-ssa-sccvn.o): Add $(PARAMS_H) dependency.
* tree-ssa-sccvn.h (run_scc_vn): Return true on success, false
on error.
* tree-ssa-sccvn.c (params.h): Include.
(DFS): Return true if all went well, return false as soon as
a SCC exceeds the size of PARAM_SCCVN_MAX_SCC_SIZE.
(run_scc_vn): Return true if all went well, return false if
we aborted during DFS.
* tree-ssa-pre.c (execute_pre): Check if SCCVN finished
successfully, otherwise bail out.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130895 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/Makefile.in
gcc/doc/invoke.texi
gcc/params.def
gcc/tree-ssa-pre.c
gcc/tree-ssa-sccvn.c
gcc/tree-ssa-sccvn.h