James Molloy 6ce50a6980 [LV] Don't bail to MiddleBlock if a runtime check fails, bail to ScalarPH instead ...

We were bailing to two places if our runtime checks failed. If the initial overflow check failed, we'd go to ScalarPH. If any other check failed, we'd go to MiddleBlock. This caused us to have to have an extra PHI per induction and reduction as the vector loop's exit block was not dominated by its latch.

There's no need to have this behavior - if we just always go to ScalarPH we can get rid of a bunch of complexity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246637 91177308-0d34-0410-b5e6-96231b3b80d8

2015-09-02 10:15:39 +00:00

..

Hello

…

InstCombine

…

Instrumentation

…

IPO

Move createEliminateAvailableExternallyPass earlier in the pass pipeline

2015-09-02 06:34:11 +00:00

ObjCARC

…

Scalar

…

Utils

…

Vectorize

[LV] Don't bail to MiddleBlock if a runtime check fails, bail to ScalarPH instead

2015-09-02 10:15:39 +00:00

CMakeLists.txt

…

LLVMBuild.txt

…

Makefile

…