[llvm-branch-commits] [llvm] AMDGPU: Handle invariant when lowering global loads (PR #168914)

[Matt Arsenault via llvm-branch-commits]

https://github.com/arsenm updated https://github.com/llvm/llvm-project/pull/168914

>From 954dc93ab5509d84007758c688a0cfb499308bc5 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Thu, 20 Nov 2025 12:14:33 -0500
Subject: [PATCH] AMDGPU: Handle invariant when lowering global loads

Global with invariant should be treated identically to
constant.
---
 llvm/lib/Target/AMDGPU/SIISelLowering.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 875278a3b4f97..c681d12ba7499 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -11944,7 +11944,7 @@ SDValue SITargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
       AS == AMDGPUAS::CONSTANT_ADDRESS_32BIT ||
       (AS == AMDGPUAS::GLOBAL_ADDRESS &&
        Subtarget->getScalarizeGlobalBehavior() && Load->isSimple() &&
-       isMemOpHasNoClobberedMemOperand(Load))) {
+       (Load->isInvariant() || isMemOpHasNoClobberedMemOperand(Load)))) {
     if ((!Op->isDivergent() || AMDGPU::isUniformMMO(MMO)) &&
         Alignment >= Align(4) && NumElements < 32) {
       if (MemVT.isPow2VectorType() ||