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re PR tree-optimization/84830 (ICE in compute_antic, at tree-ssa-pre.c:2388)
authorRichard Biener <rguenther@suse.de>
Wed, 14 Mar 2018 08:07:45 +0000 (08:07 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Wed, 14 Mar 2018 08:07:45 +0000 (08:07 +0000)
commitec64ffc8501c20efdebefb494f3c90ab44199b60
tree579ef57ef3cf179c52ec685a1460b1bab0a52192tree
parent8fef0dc6a9479bdd4f82e52f7b7e1e678a817b75commit | diff
re PR tree-optimization/84830 (ICE in compute_antic, at tree-ssa-pre.c:2388)

2018-03-14  Richard Biener  <rguenther@suse.de>

PR tree-optimization/84830
* tree-ssa-pre.c (compute_antic_aux): Intersect the new ANTIC_IN
with the old one to avoid oscillations.

* gcc.dg/torture/pr84830.c: New testcase.

From-SVN: r258514
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/torture/pr84830.c [new file with mode: 0644] blob
gcc/tree-ssa-pre.c diff | blob | history