Commit Graph

3 Commits

Author SHA1 Message Date
Gerolf Hoflehner ec6217c929 [InstCombine] Re-commit of r218721 (Optimize icmp-select-icmp sequence)
Fixes the self-host fail. Note that this commit activates dominator
analysis in the combiner by default (like the original commit did).

llvm-svn: 222590
2014-11-21 23:36:44 +00:00
Justin Bogner 894eff7a9f Revert "[InstCombine] re-commit r218721 with fix for pr21199"
This seems to cause a miscompile when building clang, which causes a
bootstrapped clang to fail or crash in several of its tests.

See:
  http://lab.llvm.org:8013/builders/clang-x86_64-darwin11-RA/builds/1184
  http://bb.pgr.jp/builders/clang-3stage-x86_64-linux/builds/7813

This reverts commit r219282.

llvm-svn: 219317
2014-10-08 16:30:22 +00:00
Gerolf Hoflehner e2ff5b9223 [InstCombine] re-commit r218721 with fix for pr21199
The icmp-select-icmp optimization targets select-icmp.eq
only. This is now ensured by testing the branch predicate
explictly. This commit also includes the test case for pr21199.

llvm-svn: 219282
2014-10-08 06:42:19 +00:00