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[X86] Block UndefRegUpdate

Authored by tkrupa on Jun 7 2018, 1:48 AM.

Description

[X86] Block UndefRegUpdate

Summary: Prevent folding of operations with memory loads when one of the sources has undefined register update.

Reviewers: craig.topper

Subscribers: llvm-commits, mike.dvoretsky, ashlykov

Differential Revision: https://reviews.llvm.org/D47621

llvm-svn: 334175

Details

Committed
tkrupaJun 7 2018, 1:48 AM
Differential Revision
D47621: [X86] Block UndefRegUpdate
Parents
rG1a83d067687e: [CodeGen] Improve diagnostics related to target attributes
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