From 06cc038d9a30b97408328eeb54f0230010b08cf6 Mon Sep 17 00:00:00 2001
From: Christudasan Devadasan <Christudasan.Devadasan@amd.com>
Date: Mon, 2 Dec 2024 11:10:57 +0530
Subject: [PATCH] [AMDGPU][SIOptimizeVGPRLiveRange] Add setpreservesCFG in the
 legacy pass flow.

---
 llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp b/llvm/lib/Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp
index e0ba5fa06f37a..ff0b9b4a7574b 100644
--- 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>();