Differential D94543

[DAGCombine] Optimize pow(X, (2/3)) and Pow(X,(3/2))
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Authored by GGanesh on Jan 12 2021, 12:33 PM.

Details

Reviewers

Whitney
fhahn
lebedev.ri
evandro
masoud.ataei

Summary

Try to convert pow(X, 1.50) --> X * sqrt(X) and Pow(X,(2/3)) to cube root of (X*X).

Diff Detail

Repository: rG LLVM Github Monorepo

Event Timeline

GGanesh created this revision.Jan 12 2021, 12:33 PM

Herald added subscribers: ecnelises, pengfei, hiraditya. · View Herald TranscriptJan 12 2021, 12:33 PM

GGanesh requested review of this revision.Jan 12 2021, 12:33 PM

Herald added a subscriber: llvm-commits. · View Herald TranscriptJan 12 2021, 12:33 PM

lebedev.ri added inline comments.Jan 12 2021, 12:57 PM

llvm/test/CodeGen/X86/pow.150.ll
1	Please precommit the test
2–3	Why not just check the final asm?

Whitney added a reviewer: masoud.ataei.Jan 12 2021, 1:04 PM

Harbormaster completed remote builds in B84897: Diff 316198.Jan 12 2021, 1:14 PM

Revision Contents
Changeset List

Path

Size

llvm/

lib/

CodeGen/

SelectionDAG/

DAGCombiner.cpp

35 lines

test/

CodeGen/

X86/

42 lines

Diff 316198

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

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llvm/test/CodeGen/X86/pow.150.ll

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