Sanjoy Das 277ce4cdb4 [SCEV] Pick backedge values for phi nodes correctly ... Summary: `getConstantEvolutionLoopExitValue` and `ComputeExitCountExhaustively` assumed all phi nodes in the loop header have the same order of incoming values. This is not correct, and this commit changes `getConstantEvolutionLoopExitValue` and `ComputeExitCountExhaustively` to lookup the backedge value of a phi node using the loop's latch block. Unfortunately, there is still some code duplication `getConstantEvolutionLoopExitValue` and `ComputeExitCountExhaustively`. At some point in the future we should extract out a helper class / method that can evolve constant evolution phi nodes across iterations. Fixes 25060. Thanks to Mattias Eriksson for the spot-on analysis! Depends on D13457. Reviewers: atrick, hfinkel Subscribers: materi, llvm-commits Differential Revision: http://reviews.llvm.org/D13458 llvm-svn: 249712		2015-10-08 18:28:36 +00:00
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Analysis	Compute demanded bits for icmp instructions	2015-10-08 12:40:06 +00:00
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Bitcode	Make sure the CastInst is valid before trying to create it	2015-10-06 12:37:54 +00:00
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CodeGen	[SystemZ] Fix another assertion failure in tryBuildVectorShuffle	2015-10-08 17:46:59 +00:00
DebugInfo	Move test back to Generic now it's fixed the right way (thanks Eric!)	2015-10-07 16:26:28 +00:00
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tools	Fix a bug in llvm-objdump’s printing of Objective-C meta data	2015-10-08 16:56:35 +00:00
Transforms	[SCEV] Pick backedge values for phi nodes correctly	2015-10-08 18:28:36 +00:00
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