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re PR tree-optimization/77839 (Memory- and compile time hog at -O1 and above)
authorRichard Biener <rguenther@suse.de>
Thu, 6 Oct 2016 08:54:37 +0000 (08:54 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Thu, 6 Oct 2016 08:54:37 +0000 (08:54 +0000)
commit37f6a157f592dcd13f61f693b40257621ac83226
tree4b2f3ec013d897f01da756a41ee3d4c10946b109tree | snapshot
parent2d5edbede6495f09b26123d8b71f217ea480c496commit | diff
re PR tree-optimization/77839 (Memory- and compile time hog at -O1 and above)

2016-10-06  Richard Biener  <rguenther@suse.de>

PR tree-optimization/77839
* tree-ssa-sccvn.c (set_ssa_val_to): Forbid value -> constant value
lattice transition.

* gcc.dg/torture/pr77839.c: New testcase.

From-SVN: r240829
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/torture/pr77839.c [new file with mode: 0644] blob
gcc/tree-ssa-sccvn.c diff | blob | history
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