[WebAssembly] Fix WebAssemblyPeephole to set Changed to true when making changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255252 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/WebAssembly/WebAssemblyPeephole.cpp b/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
index 77514bbde7ef49e08b0e8986bbcd65f334eb32fe..ab539e1c287062bd0c19286a557ef1289b1d264c 100644 (file)
--- a/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyPeephole.cpp
@@ -70,6 +70,7 @@ bool WebAssemblyPeephole::runOnMachineFunction(MachineFunction &MF) {
         MachineOperand &MO = MI.getOperand(0);
         unsigned OldReg = MO.getReg();
         if (OldReg == MI.getOperand(3).getReg()) {
+          Changed = true;
           unsigned NewReg = MRI.createVirtualRegister(MRI.getRegClass(OldReg));
           MO.setReg(NewReg);
           MO.setIsDead();