[llvm] cb29705 - AMDGPU/SILoadStoreOptimizer: Fix uninitialized variable error

[Tom Stellard via llvm-commits]

Author: Tom Stellard
Date: 2020-01-24T21:53:05-08:00
New Revision: cb297050bb029b147e3c31c4efbd5887f9500f5d

URL: https://github.com/llvm/llvm-project/commit/cb297050bb029b147e3c31c4efbd5887f9500f5d
DIFF: https://github.com/llvm/llvm-project/commit/cb297050bb029b147e3c31c4efbd5887f9500f5d.diff

LOG: AMDGPU/SILoadStoreOptimizer: Fix uninitialized variable error

This was introduced by 86c944d790728891801778b8d98c2c65a83f36a5 and
caught by the sanitizer-x86_64-linux-fast bot.

Added: 
    

Modified: 
    llvm/lib/Target/AMDGPU/SILoadStoreOptimizer.cpp

Removed: 
    


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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();