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Author SHA1 Message Date
Max Kazantsev 69f6dfa0f8 [LICM] Use ICFLoopSafetyInfo in LICM 
This patch makes LICM use `ICFLoopSafetyInfo` that is a smarter version
of LoopSafetyInfo that leverages power of Implicit Control Flow Tracking
to keep track of throwing instructions and give less pessimistic answers
to queries related to throws.

The ICFLoopSafetyInfo itself has been introduced in rL344601. This patch
enables it in LICM only.

Differential Revision: https://reviews.llvm.org/D50377
Reviewed By: apilipenko

llvm-svn: 346201
 2018-11-06 02:44:49 +00:00
Matt Arsenault abc4f29f9c AMDGPU: Remove custom BUILD_VECTOR combine 
This was looping in a testcase and removing it
now slightly improves a test.

llvm-svn: 345560
 2018-10-30 01:37:59 +00:00