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Commit 69144a92 authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAGCombine] visitMUL - allow shift by zero in MulByConstant. 

This can occur under certain circumstances when undefs are created later on in the constant multipliers (e.g. in this case due to SimplifyDemandedVectorElts). Its better to let the shift by zero to occur and perform any cleanup afterward.

Fixes OSS Fuzz #15429

llvm-svn: 364179
parent 485a4218
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