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Add isBarrier to SDep

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SDep had is* functions for the other kinds of order dependencies (isMustAlias,
isWeak, isArtificial, etc.), but not for barrier. Upcoming commits in the
PowerPC backend will make use of this function.

llvm-svn: 197098
This commit is contained in:
Hal Finkel 2013-12-12 00:19:07 +00:00
parent a4f824b0d6
commit 6840daed2f
1 changed files with 6 additions and 0 deletions
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6
include/llvm/CodeGen/ScheduleDAG.h
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@ -184,6 +184,12 @@ namespace llvm {
|| Contents.OrdKind == MustAliasMem);
}
/// isBarrier - Test if this is an Order dependence that is marked
/// as a barrier.
bool isBarrier() const {
return getKind() == Order && Contents.OrdKind == Barrier;
}
/// isMustAlias - Test if this is an Order dependence that is marked
/// as "must alias", meaning that the SUnits at either end of the edge
/// have a memory dependence on a known memory location.