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[PeepholeOptimizer] Enhance the redundant COPY elimination.

Authored by hliao on Sep 18 2020, 12:14 PM.

Description

[PeepholeOptimizer] Enhance the redundant COPY elimination.

  • Eliminate redundant COPYs from the same register & subregister pair.

Differential Revision: https://reviews.llvm.org/D87939

Details

Committed
hliaoSep 22 2020, 7:11 AM
Differential Revision
D87939: [PeepholeOptimizer] Enhance the redundant COPY elimination.
Parents
rG0793b45660a9: [X86] Add missing namespace closure comments. NFCI.
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