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re PR tree-optimization/86816 (ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize)
authorRichard Biener <rguenther@suse.de>
Thu, 2 Aug 2018 13:19:50 +0000 (13:19 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Thu, 2 Aug 2018 13:19:50 +0000 (13:19 +0000)
commit86c8eea6689cb62d8aeff6e4649fae158015981e
tree83d66b30f4b86aa5c0f7281446896f8a4c8e532etree
parent593d93cb0aa00837906d5d1bebb018a42721a114commit | diff
re PR tree-optimization/86816 (ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize)

2018-08-02  Richard Biener  <rguenther@suse.de>

PR tree-optimization/86816
* tree-ssa-tail-merge.c (tail_merge_valueize): New function
which checks for value availability before querying it.
(gvn_uses_equal): Use it.
(same_succ_hash): Likewise.
(gimple_equal_p): Likewise.

* g++.dg/torture/pr86816.C: New testcase.

From-SVN: r263257
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/g++.dg/torture/pr86816.C [new file with mode: 0644] blob
gcc/tree-ssa-tail-merge.c diff | blob | history