Craig Topper 50d502826b [CostModel] Add really basic support for being able to query the cost of the FNeg instruction. ...

Summary:
This reuses the getArithmeticInstrCost, but passes dummy values of the second
operand flags.

The X86 costs are wrong and can be improved in a follow up. I just wanted to
stop it from reporting an unknown cost first.

Reviewers: RKSimon, spatel, andrew.w.kaylor, cameron.mcinally

Reviewed By: spatel

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62444

llvm-svn: 361788

2019-05-28 04:09:18 +00:00

44 KiB

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