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[TTI] Add generic cost model for smul/umul overflow intrinsics

Authored by RKSimon on Feb 25 2019, 5:30 AM.

Description

[TTI] Add generic cost model for smul/umul overflow intrinsics

Based off smul/umul fixed costs and the implementation in TargetLowering::expandMULO.

llvm-svn: 354784

Details

Committed
RKSimonFeb 25 2019, 5:30 AM
Parents
rGf54186abb628: [SLPVectorizer][X86] Add fixed smul/umul tests
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