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Commit 6953b324 authored by Pierre Gousseau's avatar Pierre Gousseau
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[X86][btver2] PR31902: Fix a crash in combineOrCmpEqZeroToCtlzSrl under fast math. 

In combineOrCmpEqZeroToCtlzSrl, replace "getConstantOperand == 0" by "isNullConstant" to account for floating point constants.

Differential Revision: https://reviews.llvm.org/D29756

llvm-svn: 294588
parent 05ac1f70
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