1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
index 2198ba8d6c0..4d265713aaf 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -106,6 +106,11 @@ static cl::opt<bool> EnableSDWAPeephole(
   cl::desc("Enable SDWA peepholer"),
   cl::init(true));
 
+static cl::opt<bool> EnableDPPCombine(
+  "amdgpu-dpp-combine",
+  cl::desc("Enable DPP combiner"),
+  cl::init(false));
+
 // Enable address space based alias analysis
 static cl::opt<bool> EnableAMDGPUAliasAnalysis("enable-amdgpu-aa", cl::Hidden,
   cl::desc("Enable AMDGPU Alias Analysis"),
@@ -158,6 +163,7 @@ extern "C" void LLVMInitializeAMDGPUTarget() {
   initializeR600VectorRegMergerPass(*PR);
   initializeGlobalISel(*PR);
   initializeAMDGPUDAGToDAGISelPass(*PR);
+  initializeGCNDPPCombinePass(*PR);
   initializeSILowerI1CopiesPass(*PR);
   initializeSIFixSGPRCopiesPass(*PR);
   initializeSIFixVGPRCopiesPass(*PR);
@@ -790,6 +796,8 @@ void GCNPassConfig::addMachineSSAOptimization() {
   //
   // XXX - Can we get away without running DeadMachineInstructionElim again?
   addPass(&SIFoldOperandsID);
+  if (EnableDPPCombine)
+    addPass(&GCNDPPCombineID);
   addPass(&DeadMachineInstructionElimID);
   addPass(&SILoadStoreOptimizerID);
   if (EnableSDWAPeephole) {