It's safe to sink some instructions which are not safe to speculatively
execute. Make Sink's predicate more precise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118787 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/Sink.cpp b/lib/Transforms/Scalar/Sink.cpp
index 1aca908..d6f1e93 100644
--- a/lib/Transforms/Scalar/Sink.cpp
+++ b/lib/Transforms/Scalar/Sink.cpp
@@ -169,7 +169,10 @@
return false;
}
- return Inst->isSafeToSpeculativelyExecute();
+ if (isa<TerminatorInst>(Inst) || isa<PHINode>(Inst))
+ return false;
+
+ return true;
}
/// SinkInstruction - Determine whether it is safe to sink the specified machine