From cb297050bb029b147e3c31c4efbd5887f9500f5d Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Fri, 24 Jan 2020 21:52:05 -0800
Subject: [PATCH] AMDGPU/SILoadStoreOptimizer: Fix uninitialized variable error

This was introduced by 86c944d790728891801778b8d98c2c65a83f36a5 and
caught by the sanitizer-x86_64-linux-fast bot.
---
 llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
index 364196b1d6e1..ee207586b0d0 100644
--- a/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
+++ b/llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp
@@ -510,6 +510,8 @@ void SILoadStoreOptimizer::CombineInfo::setMI(MachineBasicBlock::iterator MI,
 
   if (InstClass == MIMG) {
     DMask = TII.getNamedOperand(*I, AMDGPU::OpName::dmask)->getImm();
+    // Offset is not considered for MIMG instructions.
+    Offset = 0;
   } else {
     int OffsetIdx = AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::offset);
     Offset = I->getOperand(OffsetIdx).getImm();