[llvm-branch-commits] [llvm] [AMDGPU] Correct pass dependencies for SILowerSGPRSpills (PR #109937)

[Akshat Oke via llvm-branch-commits]

https://github.com/optimisan updated https://github.com/llvm/llvm-project/pull/109937

>From 2cd5b9b848a13653fe8c42429932f598cd75e763 Mon Sep 17 00:00:00 2001
From: Akshat Oke <Akshat.Oke at amd.com>
Date: Tue, 24 Sep 2024 06:35:43 +0000
Subject: [PATCH] [AMDGPU] Correct pass dependencies for SILowerSGPRSpills

Replace the unused analysis (VirtRegMap) dependency with the used one (SlotIndexes).

This initializes `SlotIndexesWrapperPass` which is used by SILowerSGPRSpills to ensure that legacy pass manager finds it.
Removes the initialization for `VirtRegMapWrapperLegacy` pass since it is not requested in this pass.
---
 llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
index 4afefa3d9b245c..d8697aa2ffe1cd 100644
--- a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
@@ -95,8 +95,8 @@ char SILowerSGPRSpillsLegacy::ID = 0;
 INITIALIZE_PASS_BEGIN(SILowerSGPRSpillsLegacy, DEBUG_TYPE,
                       "SI lower SGPR spill instructions", false, false)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervalsWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SlotIndexesWrapperPass)
 INITIALIZE_PASS_END(SILowerSGPRSpillsLegacy, DEBUG_TYPE,
                     "SI lower SGPR spill instructions", false, false)