[PostRAMachineSink] preserve CFG
Summary: Mark CFG is preserved since this pass do not make any change in CFG.
Reviewers: sebpop, mzolotukhin, mcrosier
Reviewed By: mzolotukhin
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D44845
llvm-svn: 328727
diff --git a/llvm/lib/CodeGen/MachineSink.cpp b/llvm/lib/CodeGen/MachineSink.cpp
index 97ddce3..2fcad0c 100644
--- a/llvm/lib/CodeGen/MachineSink.cpp
+++ b/llvm/lib/CodeGen/MachineSink.cpp
@@ -948,6 +948,11 @@
PostRAMachineSinking() : MachineFunctionPass(ID) {}
StringRef getPassName() const override { return "PostRA Machine Sink"; }
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
+ AU.setPreservesCFG();
+ MachineFunctionPass::getAnalysisUsage(AU);
+ }
+
private:
/// Track which registers have been modified and used.
BitVector ModifiedRegs, UsedRegs;