[AMDGPU][SIOptimizeVGPRLiveRange] Add setpreservesCFG in the legacy pass flow. (#118256)

cdevadas · web-flow · commit c16c0e26236d · 2024-12-02T23:16:03.000+05:30
diff --git a/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp b/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
@@ -155,6 +155,7 @@ class SIOptimizeVGPRLiveRangeLegacy : public MachineFunctionPass {
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
     AU.addRequired<LiveVariablesWrapperPass>();
     AU.addRequired<MachineDominatorTreeWrapperPass>();
     AU.addRequired<MachineLoopInfoWrapperPass>();

Original file line number	Diff line number	Diff line change
`@@ -155,6 +155,7 @@ class SIOptimizeVGPRLiveRangeLegacy : public MachineFunctionPass {`
`155`	`155`	`}`
`156`	`156`
`157`	`157`	`void getAnalysisUsage(AnalysisUsage &AU) const override {`
	`158`	`+ AU.setPreservesCFG();`
`158`	`159`	`AU.addRequired<LiveVariablesWrapperPass>();`
`159`	`160`	`AU.addRequired<MachineDominatorTreeWrapperPass>();`
`160`	`161`	`AU.addRequired<MachineLoopInfoWrapperPass>();`