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re PR tree-optimization/82320 (Compile time hog w/ -O)
authorRichard Biener <rguenther@suse.de>
Tue, 26 Sep 2017 07:29:51 +0000 (07:29 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Tue, 26 Sep 2017 07:29:51 +0000 (07:29 +0000)
commit09fdb7014c9b121d4f695b1ce63d13f7e43a45c8
treef0340b9988503b0649b09dc8a759ee36ef684ec4tree
parentdf2a1a265d13222bd4d109eeebbb7662f24fd5b1commit | diff
re PR tree-optimization/82320 (Compile time hog w/ -O)

2017-09-26  Richard Biener  <rguenther@suse.de>

PR tree-optimization/82320
* tree-ssa-sccvn.c (set_ssa_val_to): Changing undef to undef
isn't a change.

* gcc.dg/torture/pr82320.c: New testcase.

From-SVN: r253188
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/torture/pr82320.c [new file with mode: 0644] blob
gcc/tree-ssa-sccvn.c diff | blob | history