[llvm] r271444 - AMDGPU: SIDebuggerInsertNops preserves CFG

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Wed Jun  1 19:04:22 2016
New Revision: 271444

URL: http://llvm.org/viewvc/llvm-project?rev=271444&view=rev
Log:
AMDGPU: SIDebuggerInsertNops preserves CFG

This saves an additional run of the DominatorTree and
MachineLoopInfo

Modified:
    llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
    llvm/trunk/lib/Target/AMDGPU/SIDebuggerInsertNops.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp?rev=271444&r1=271443&r2=271444&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp Wed Jun  1 19:04:22 2016
@@ -59,6 +59,7 @@ extern "C" void LLVMInitializeAMDGPUTarg
   initializeSIInsertWaitsPass(*PR);
   initializeSIWholeQuadModePass(*PR);
   initializeSILowerControlFlowPass(*PR);
+  initializeSIDebuggerInsertNopsPass(*PR);
 }
 
 static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {

Modified: llvm/trunk/lib/Target/AMDGPU/SIDebuggerInsertNops.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIDebuggerInsertNops.cpp?rev=271444&r1=271443&r2=271444&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIDebuggerInsertNops.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIDebuggerInsertNops.cpp Wed Jun  1 19:04:22 2016
@@ -39,6 +39,11 @@ public:
   SIDebuggerInsertNops() : MachineFunctionPass(ID) { }
   const char *getPassName() const override { return PASS_NAME; }
 
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
+    AU.setPreservesCFG();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
+
   bool runOnMachineFunction(MachineFunction &MF) override;
 };