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[VE] Support atomic fence

Authored by kaz7 on Oct 24 2020, 7:11 PM.

Description

[VE] Support atomic fence

Support atomic fence instruction and add a regression test.
Add MEMBARRIER pseudo insturction also to use it as a barrier
against to the compiler optimizations.

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D90112

Details

Committed
kaz7Oct 26 2020, 1:03 AM
Reviewer
simoll
Differential Revision
D90112: [VE] Support atomic fence
Parents
rGbfabd7878b32: Fix broken build after previous commit
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