diff options
Diffstat (limited to 'llvm/lib/CodeGen/OptimizePHIs.cpp')
-rw-r--r-- | llvm/lib/CodeGen/OptimizePHIs.cpp | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/OptimizePHIs.cpp b/llvm/lib/CodeGen/OptimizePHIs.cpp index f7aeb42..6430e54 100644 --- a/llvm/lib/CodeGen/OptimizePHIs.cpp +++ b/llvm/lib/CodeGen/OptimizePHIs.cpp @@ -1,4 +1,4 @@ -//===-- OptimizePHIs.cpp - Optimize machine instruction PHIs --------------===// +//===- OptimizePHIs.cpp - Optimize machine instruction PHIs ---------------===// // // The LLVM Compiler Infrastructure // @@ -14,13 +14,18 @@ #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/Statistic.h" +#include "llvm/CodeGen/MachineBasicBlock.h" +#include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/CodeGen/MachineInstr.h" +#include "llvm/CodeGen/MachineOperand.h" #include "llvm/CodeGen/MachineRegisterInfo.h" -#include "llvm/CodeGen/Passes.h" -#include "llvm/IR/Function.h" +#include "llvm/Pass.h" #include "llvm/Target/TargetInstrInfo.h" +#include "llvm/Target/TargetRegisterInfo.h" #include "llvm/Target/TargetSubtargetInfo.h" +#include <cassert> + using namespace llvm; #define DEBUG_TYPE "opt-phis" @@ -29,12 +34,14 @@ STATISTIC(NumPHICycles, "Number of PHI cycles replaced"); STATISTIC(NumDeadPHICycles, "Number of dead PHI cycles"); namespace { + class OptimizePHIs : public MachineFunctionPass { MachineRegisterInfo *MRI; const TargetInstrInfo *TII; public: static char ID; // Pass identification + OptimizePHIs() : MachineFunctionPass(ID) { initializeOptimizePHIsPass(*PassRegistry::getPassRegistry()); } @@ -47,18 +54,21 @@ namespace { } private: - typedef SmallPtrSet<MachineInstr*, 16> InstrSet; - typedef SmallPtrSetIterator<MachineInstr*> InstrSetIterator; + using InstrSet = SmallPtrSet<MachineInstr *, 16>; + using InstrSetIterator = SmallPtrSetIterator<MachineInstr *>; bool IsSingleValuePHICycle(MachineInstr *MI, unsigned &SingleValReg, InstrSet &PHIsInCycle); bool IsDeadPHICycle(MachineInstr *MI, InstrSet &PHIsInCycle); bool OptimizeBB(MachineBasicBlock &MBB); }; -} + +} // end anonymous namespace char OptimizePHIs::ID = 0; + char &llvm::OptimizePHIsID = OptimizePHIs::ID; + INITIALIZE_PASS(OptimizePHIs, DEBUG_TYPE, "Optimize machine instruction PHIs", false, false) |