Revert r300657 due to crashes in stage2 of bootstraps:
authorChandler Carruth <chandlerc@gmail.com>
Wed, 19 Apr 2017 06:23:20 +0000 (06:23 +0000)
committerChandler Carruth <chandlerc@gmail.com>
Wed, 19 Apr 2017 06:23:20 +0000 (06:23 +0000)
commitae3386aa7449571c7ae5101b2f425021d3b93f98
tree1cebefd5fc0b0d06241735c4289537ed71b25393
parent47d58ea681d9a9f1bbce7e37963d5179f227d7a5
Revert r300657 due to crashes in stage2 of bootstraps:
http://lab.llvm.org:8011/builders/clang-with-lto-ubuntu/builds/2476/steps/build-stage2-LLVMgold.so/logs/stdio
http://bb.pgr.jp/builders/clang-3stage-x86_64-linux/builds/15036/steps/build_llvmclang/logs/stdio

I've updated the commit thread, reverting to get the bots back to green.

Original commit summary:
[JumpThread] We want to fold (not thread) when all predecessor go to single BB's successor.

llvm-svn: 300662
llvm/lib/Transforms/Scalar/JumpThreading.cpp
llvm/test/Transforms/JumpThreading/basic.ll