[ARM] Fix Changed status in MVEGatherScatterLoweringPass.

Now that we are calling SimplifyInstructionsInBlock, make sure we update
Changed when it reports alterations.

diff --git a/llvm/lib/Target/ARM/MVEGatherScatterLowering.cpp b/llvm/lib/Target/ARM/MVEGatherScatterLowering.cpp
index 6188480..4c1d0ba 100644 (file)
--- a/llvm/lib/Target/ARM/MVEGatherScatterLowering.cpp
+++ b/llvm/lib/Target/ARM/MVEGatherScatterLowering.cpp
@@ -1167,7 +1167,7 @@ bool MVEGatherScatterLowering::runOnFunction(Function &F) {
   bool Changed = false;
 
   for (BasicBlock &BB : F) {
-    SimplifyInstructionsInBlock(&BB);
+    Changed |= SimplifyInstructionsInBlock(&BB);
 
     for (Instruction &I : BB) {
       IntrinsicInst *II = dyn_cast<IntrinsicInst>(&I);