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re PR tree-optimization/35472 (tree DSE is broken)
authorRichard Guenther <rguenther@suse.de>
Wed, 5 Mar 2008 16:13:04 +0000 (16:13 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Wed, 5 Mar 2008 16:13:04 +0000 (16:13 +0000)
commit1bdcf037b30e17f8f9182952494c7d98b9a100d1
treef34248a3bddd1b90c01b24609c94f0ff59cae43dtree
parentfec5fe47e641ed2f95e60197a9a3977176427749commit | diff
re PR tree-optimization/35472 (tree DSE is broken)

2008-03-05  Richard Guenther  <rguenther@suse.de>

PR tree-optimization/35472
* tree-ssa-dse.c (dse_optimize_stmt): Do not delete a store
whose single use_stmt has a overlapping set of loaded and
stored symbols as that use_stmt might be a noop assignment then.

* gcc.c-torture/execute/pr35472.c: New testcase.

From-SVN: r132899
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.c-torture/execute/pr35472.c [new file with mode: 0644] blob
gcc/tree-ssa-dse.c diff | blob | history