4 files changed, 0 insertions, 97 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPU.h b/llvm/lib/Target/AMDGPU/AMDGPU.h
index feb73f45011..e6818748fe5 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPU.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPU.h
@@ -141,9 +141,6 @@ ModulePass* createAMDGPUUnifyMetadataPass();
 void initializeAMDGPUUnifyMetadataPass(PassRegistry&);
 extern char &AMDGPUUnifyMetadataID;
 
-void initializeSIFixControlFlowLiveIntervalsPass(PassRegistry&);
-extern char &SIFixControlFlowLiveIntervalsID;
-
 void initializeSIOptimizeExecMaskingPreRAPass(PassRegistry&);
 extern char &SIOptimizeExecMaskingPreRAID;
 
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
index 3ad61049996..53e8255dab7 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
@@ -147,7 +147,6 @@ extern "C" void LLVMInitializeAMDGPUTarget() {
   initializeSIFoldOperandsPass(*PR);
   initializeSIPeepholeSDWAPass(*PR);
   initializeSIShrinkInstructionsPass(*PR);
-  initializeSIFixControlFlowLiveIntervalsPass(*PR);
   initializeSIOptimizeExecMaskingPreRAPass(*PR);
   initializeSILoadStoreOptimizerPass(*PR);
   initializeAMDGPUAlwaysInlinePass(*PR);
@@ -803,10 +802,6 @@ void GCNPassConfig::addOptimizedRegAlloc(FunctionPass *RegAllocPass) {
   if (getOptLevel() > CodeGenOpt::None)
     insertPass(&MachineSchedulerID, &SIOptimizeExecMaskingPreRAID);
 
-  // This needs to be run directly before register allocation because earlier
-  // passes might recompute live intervals.
-  insertPass(&MachineSchedulerID, &SIFixControlFlowLiveIntervalsID);
-
   // This must be run immediately after phi elimination and before
   // TwoAddressInstructions, otherwise the processing of the tied operand of
   // SI_ELSE will introduce a copy of the tied operand source after the else.
diff --git a/llvm/lib/Target/AMDGPU/CMakeLists.txt b/llvm/lib/Target/AMDGPU/CMakeLists.txt
index 5de828a7b6b..aaa69b85308 100644
--- a/llvm/lib/Target/AMDGPU/CMakeLists.txt
+++ b/llvm/lib/Target/AMDGPU/CMakeLists.txt
@@ -66,7 +66,6 @@ add_llvm_target(AMDGPUCodeGen
   R600RegisterInfo.cpp
   SIAnnotateControlFlow.cpp
   SIDebuggerInsertNops.cpp
-  SIFixControlFlowLiveIntervals.cpp
   SIFixSGPRCopies.cpp
   SIFixVGPRCopies.cpp
   SIFixWWMLiveness.cpp
diff --git a/llvm/lib/Target/AMDGPU/SIFixControlFlowLiveIntervals.cpp b/llvm/lib/Target/AMDGPU/SIFixControlFlowLiveIntervals.cpp
deleted file mode 100644
index d4d3959658e..00000000000
--- a/llvm/lib/Target/AMDGPU/SIFixControlFlowLiveIntervals.cpp
+++ /dev/null
@@ -1,88 +0,0 @@
-//===-- SIFixControlFlowLiveIntervals.cpp - Fix CF live intervals ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-/// \file
-/// \brief Spilling of EXEC masks used for control flow messes up control flow
-/// lowering, so mark all live intervals associated with CF instructions as
-/// non-spillable.
-///
-//===----------------------------------------------------------------------===//
-
-#include "AMDGPU.h"
-#include "SIInstrInfo.h"
-#include "llvm/CodeGen/LiveIntervalAnalysis.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "si-fix-cf-live-intervals"
-
-namespace {
-
-class SIFixControlFlowLiveIntervals : public MachineFunctionPass {
-public:
-  static char ID;
-
-public:
-  SIFixControlFlowLiveIntervals() : MachineFunctionPass(ID) {
-    initializeSIFixControlFlowLiveIntervalsPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool runOnMachineFunction(MachineFunction &MF) override;
-
-  StringRef getPassName() const override { return "SI Fix CF Live Intervals"; }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<LiveIntervals>();
-    AU.setPreservesAll();
-    MachineFunctionPass::getAnalysisUsage(AU);
-  }
-};
-
-} // End anonymous namespace.
-
-INITIALIZE_PASS_BEGIN(SIFixControlFlowLiveIntervals, DEBUG_TYPE,
-                      "SI Fix CF Live Intervals", false, false)
-INITIALIZE_PASS_DEPENDENCY(LiveIntervals)
-INITIALIZE_PASS_END(SIFixControlFlowLiveIntervals, DEBUG_TYPE,
-                    "SI Fix CF Live Intervals", false, false)
-
-char SIFixControlFlowLiveIntervals::ID = 0;
-
-char &llvm::SIFixControlFlowLiveIntervalsID = SIFixControlFlowLiveIntervals::ID;
-
-FunctionPass *llvm::createSIFixControlFlowLiveIntervalsPass() {
-  return new SIFixControlFlowLiveIntervals();
-}
-
-bool SIFixControlFlowLiveIntervals::runOnMachineFunction(MachineFunction &MF) {
-  LiveIntervals *LIS = &getAnalysis<LiveIntervals>();
-
-  for (const MachineBasicBlock &MBB : MF) {
-    for (const MachineInstr &MI : MBB) {
-      switch (MI.getOpcode()) {
-        case AMDGPU::SI_IF:
-        case AMDGPU::SI_ELSE:
-        case AMDGPU::SI_BREAK:
-        case AMDGPU::SI_IF_BREAK:
-        case AMDGPU::SI_ELSE_BREAK:
-        case AMDGPU::SI_END_CF: {
-          unsigned Reg = MI.getOperand(0).getReg();
-          LIS->getInterval(Reg).markNotSpillable();
-          break;
-        }
-        default:
-          break;
-      }
-    }
-  }
-
-  return false;
-}