[WebAssembly] Declare that WebAssemblyPeephole does not modify the CFG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255251 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/WebAssembly/WebAssemblyPeephole.cpp b/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
index 11f44775b5ea0f1d7a6560e4943bbd7ea9c185d3..77514bbde7ef49e08b0e8986bbcd65f334eb32fe 100644 (file)
--- a/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
@@ -26,6 +26,11 @@ class WebAssemblyPeephole final : public MachineFunctionPass {
     return "WebAssembly late peephole optimizer";
   }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
+
   bool runOnMachineFunction(MachineFunction &MF) override;
 
 public: