[PATCH] D20848: AMDGPU: SIDebuggerInsertNops preserves CFG

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
arsenm added a subscriber: llvm-commits.
Herald added subscribers: kzhuravl, arsenm.

This saves an additional run of the DominatorTree and MachineLoopInfo

http://reviews.llvm.org/D20848

Files:
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/SIDebuggerInsertNops.cpp

Index: lib/Target/AMDGPU/SIDebuggerInsertNops.cpp
===================================================================
--- lib/Target/AMDGPU/SIDebuggerInsertNops.cpp
+++ lib/Target/AMDGPU/SIDebuggerInsertNops.cpp
@@ -39,6 +39,11 @@
   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;
 };
 
Index: lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -59,6 +59,7 @@
   initializeSIInsertWaitsPass(*PR);
   initializeSIWholeQuadModePass(*PR);
   initializeSILowerControlFlowPass(*PR);
+  initializeSIDebuggerInsertNopsPass(*PR);
 }
 
 static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D20848.59169.patch
Type: text/x-patch
Size: 1039 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20160601/57e08948/attachment.bin>