AMDGPU/GlobalISel: Account for multiple defs when finding intrinsic ID

llvm-svn: 363578
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp b/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
index e355af1..6484b7d 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
@@ -270,8 +270,7 @@
 
 bool AMDGPUInstructionSelector::selectG_INTRINSIC(MachineInstr &I,
                                           CodeGenCoverage &CoverageInfo) const {
-  unsigned IntrinsicID =  I.getOperand(1).getIntrinsicID();
-
+  unsigned IntrinsicID =  I.getOperand(I.getNumExplicitDefs()).getIntrinsicID();
   switch (IntrinsicID) {
   default:
     break;