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[X86][Btver2] Most RMW instructions don't require an additional uop

Authored by RKSimon on Oct 3 2018, 3:28 AM.

Description

[X86][Btver2] Most RMW instructions don't require an additional uop

Remove uop on WriteRMW and move it into the few instructions that need it.

Match AMD Fam16h SOG + llvm-exegesis tests

llvm-svn: 343671

Details

Committed
RKSimonOct 3 2018, 3:28 AM
Parents
rGd11015861c37: [X86] ALU/ADC RMW instructions should use the WriteRMW sequence class
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