Make DetectDeadLanes preserve CFG

llvm-svn: 272740
2016-06-15 00:25:09 +00:00 · 2016-06-15 00:25:09 +00:00 · 3698ca231f
parent 4a697c312f
commit 3698ca231f
1 changed files with 5 additions and 0 deletions
--- a/llvm/lib/CodeGen/DetectDeadLanes.cpp
+++ b/llvm/lib/CodeGen/DetectDeadLanes.cpp
@ -65,6 +65,11 @@ public:

  const char *getPassName() const override { return "Detect Dead Lanes"; }

+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
+
 private:
  /// Add used lane bits on the register used by operand \p MO. This translates
  /// the bitmask based on the operands subregister, and puts the register into