[llvm-commits] [PATCH]The ExecutionDepsFix pass does not propagate dependencies through implicit definitions

[Silviu Baranga]

Hi,

The attached patch fixes a problem with the ExecutionDependencyFix pass that
is causing some execution domain changes to not be performed.

The visitSoftInstr method does not call setLiveReg for imp-def operands,
which
prevents domain collapsing when the dependency is caused by the imp-def
operand.
This is because the operand is not considered to be live.

The attached patch also contains a simple regression test that can be used
to
replicate this behaviour.

Please review.

Thanks,
Silviu
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