Evan Cheng 9c777a4844 Teach CodeGenPrep to look past bitcast when it's duplicating return instruction ...

into predecessor blocks to enable tail call optimization.

rdar://11958338


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160894 91177308-0d34-0410-b5e6-96231b3b80d8

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..

ADCE.cpp

Clean whitespaces.

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BasicBlockPlacement.cpp

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CMakeLists.txt

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CodeGenPrepare.cpp

Teach CodeGenPrep to look past bitcast when it's duplicating return instruction

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ConstantProp.cpp

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CorrelatedValuePropagation.cpp

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DCE.cpp

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DeadStoreElimination.cpp

Clean whitespaces.

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EarlyCSE.cpp

Clean whitespaces.

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GlobalMerge.cpp

Clean whitespaces.

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GVN.cpp

Clean whitespaces.

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IndVarSimplify.cpp

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JumpThreading.cpp

Clean whitespaces.

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LICM.cpp

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LLVMBuild.txt

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LoopDeletion.cpp

Clean whitespaces.

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LoopIdiomRecognize.cpp

Clean whitespaces.

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LoopInstSimplify.cpp

Clean whitespaces.

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LoopRotation.cpp

Clean whitespaces.

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LoopStrengthReduce.cpp

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LoopUnrollPass.cpp

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LoopUnswitch.cpp

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LowerAtomic.cpp

Clean whitespaces.

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Makefile

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MemCpyOptimizer.cpp

Clean whitespaces.

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ObjCARC.cpp

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Reassociate.cpp

Stop reassociate from looking through expressions of arbitrary complexity. This

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Reg2Mem.cpp

Clean whitespaces.

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Scalar.cpp

Clean whitespaces.

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ScalarReplAggregates.cpp

Clean whitespaces.

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SCCP.cpp

Clean whitespaces.

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SimplifyCFGPass.cpp

Clean whitespaces.

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SimplifyLibCalls.cpp

do null checks for a few more Emit*() functions.

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Sink.cpp

Clean whitespaces.

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TailRecursionElimination.cpp

Clean whitespaces.

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