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re PR tree-optimization/87211 (gcc ICE at O2: in set_ssa_val_to, at tree-ssa-sccvn...
authorRichard Biener <rguenther@suse.de>
Tue, 4 Sep 2018 12:04:42 +0000 (12:04 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Tue, 4 Sep 2018 12:04:42 +0000 (12:04 +0000)
commit5bf734facce9619c0757e32532fe8cc435f27a6d
tree002b5373060972cc867619c36989735499ce33a1tree
parente20d979b7ada10b4665b0c97494ebeb1542ca047commit | diff
re PR tree-optimization/87211 (gcc ICE at O2: in set_ssa_val_to, at tree-ssa-sccvn.c:3628)

2018-09-04  Richard Biener  <rguenther@suse.de>

PR tree-optimization/87211
* tree-ssa-sccvn.c (visit_phi): When value-numbering to a
backedge value we're supposed to treat as VARYING also number
the PHI to VARYING in case it got a different value-number already.

* gcc.dg/torture/pr87211.c: New testcase.

From-SVN: r264079
gcc/ChangeLog diff | blob | blame | history
gcc/testsuite/ChangeLog diff | blob | blame | history
gcc/testsuite/gcc.dg/torture/pr87211.c [new file with mode: 0644] blob
gcc/tree-ssa-sccvn.c diff | blob | blame | history
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