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| 1 //===- subzero/src/IceTargetLoweringX8632.h - x86-32 lowering ---*- C++ -*-===// | 1 //===- subzero/src/IceTargetLoweringX8632.h - x86-32 lowering ---*- C++ -*-===// |
| 2 // | 2 // |
| 3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 // | 9 // |
| 10 // This file declares the TargetLoweringX8632 class, which | 10 // This file declares the TargetLoweringX8632 class, which |
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| 21 #include "assembler_ia32.h" | 21 #include "assembler_ia32.h" |
| 22 #include "IceInstX8632.h" | 22 #include "IceInstX8632.h" |
| 23 #include "IceRegistersX8632.h" | 23 #include "IceRegistersX8632.h" |
| 24 | 24 |
| 25 namespace Ice { | 25 namespace Ice { |
| 26 | 26 |
| 27 class TargetX8632 : public TargetLowering { | 27 class TargetX8632 : public TargetLowering { |
| 28 public: | 28 public: |
| 29 static TargetX8632 *create(Cfg *Func) { return new TargetX8632(Func); } | 29 static TargetX8632 *create(Cfg *Func) { return new TargetX8632(Func); } |
| 30 | 30 |
| 31 virtual void translateOm1(); | 31 void translateOm1() override; |
| 32 virtual void translateO2(); | 32 void translateO2() override; |
| 33 virtual bool doBranchOpt(Inst *I, const CfgNode *NextNode); | 33 bool doBranchOpt(Inst *I, const CfgNode *NextNode) override; |
| 34 | 34 |
| 35 virtual Variable *getPhysicalRegister(SizeT RegNum); | 35 Variable *getPhysicalRegister(SizeT RegNum) override; |
| 36 virtual IceString getRegName(SizeT RegNum, Type Ty) const; | 36 IceString getRegName(SizeT RegNum, Type Ty) const override; |
| 37 virtual llvm::SmallBitVector getRegisterSet(RegSetMask Include, | 37 llvm::SmallBitVector getRegisterSet(RegSetMask Include, |
| 38 RegSetMask Exclude) const; | 38 RegSetMask Exclude) const override; |
| 39 virtual const llvm::SmallBitVector &getRegisterSetForType(Type Ty) const { | 39 const llvm::SmallBitVector &getRegisterSetForType(Type Ty) const override { |
| 40 return TypeToRegisterSet[Ty]; | 40 return TypeToRegisterSet[Ty]; |
| 41 } | 41 } |
| 42 virtual bool hasFramePointer() const { return IsEbpBasedFrame; } | 42 bool hasFramePointer() const override { return IsEbpBasedFrame; } |
| 43 virtual SizeT getFrameOrStackReg() const { | 43 SizeT getFrameOrStackReg() const override { |
| 44 return IsEbpBasedFrame ? RegX8632::Reg_ebp : RegX8632::Reg_esp; | 44 return IsEbpBasedFrame ? RegX8632::Reg_ebp : RegX8632::Reg_esp; |
| 45 } | 45 } |
| 46 virtual size_t typeWidthInBytesOnStack(Type Ty) const { | 46 size_t typeWidthInBytesOnStack(Type Ty) const override { |
| 47 // Round up to the next multiple of 4 bytes. In particular, i1, | 47 // Round up to the next multiple of 4 bytes. In particular, i1, |
| 48 // i8, and i16 are rounded up to 4 bytes. | 48 // i8, and i16 are rounded up to 4 bytes. |
| 49 return (typeWidthInBytes(Ty) + 3) & ~3; | 49 return (typeWidthInBytes(Ty) + 3) & ~3; |
| 50 } | 50 } |
| 51 virtual SizeT getBundleAlignLog2Bytes() const { return 5; } | 51 SizeT getBundleAlignLog2Bytes() const override { return 5; } |
| 52 virtual llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const { | 52 llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const override { |
| 53 static const uint8_t Padding[] = { 0xF4 }; | 53 static const uint8_t Padding[] = { 0xF4 }; |
| 54 return llvm::ArrayRef<uint8_t>(Padding, 1); | 54 return llvm::ArrayRef<uint8_t>(Padding, 1); |
| 55 } | 55 } |
| 56 virtual void emitVariable(const Variable *Var) const; | 56 void emitVariable(const Variable *Var) const override; |
| 57 virtual void lowerArguments(); | 57 void lowerArguments() override; |
| 58 virtual void addProlog(CfgNode *Node); | 58 void addProlog(CfgNode *Node) override; |
| 59 virtual void addEpilog(CfgNode *Node); | 59 void addEpilog(CfgNode *Node) override; |
| 60 virtual void emitConstants() const; | 60 void emitConstants() const override; |
| 61 SizeT makeNextLabelNumber() { return NextLabelNumber++; } | 61 SizeT makeNextLabelNumber() { return NextLabelNumber++; } |
| 62 // Ensure that a 64-bit Variable has been split into 2 32-bit | 62 // Ensure that a 64-bit Variable has been split into 2 32-bit |
| 63 // Variables, creating them if necessary. This is needed for all | 63 // Variables, creating them if necessary. This is needed for all |
| 64 // I64 operations, and it is needed for pushing F64 arguments for | 64 // I64 operations, and it is needed for pushing F64 arguments for |
| 65 // function calls using the 32-bit push instruction (though the | 65 // function calls using the 32-bit push instruction (though the |
| 66 // latter could be done by directly writing to the stack). | 66 // latter could be done by directly writing to the stack). |
| 67 void split64(Variable *Var); | 67 void split64(Variable *Var); |
| 68 void finishArgumentLowering(Variable *Arg, Variable *FramePtr, | 68 void finishArgumentLowering(Variable *Arg, Variable *FramePtr, |
| 69 size_t BasicFrameOffset, size_t &InArgsSizeBytes); | 69 size_t BasicFrameOffset, size_t &InArgsSizeBytes); |
| 70 Operand *loOperand(Operand *Operand); | 70 Operand *loOperand(Operand *Operand); |
| 71 Operand *hiOperand(Operand *Operand); | 71 Operand *hiOperand(Operand *Operand); |
| 72 x86::Address stackVarToAsmOperand(const Variable *Var) const; | 72 x86::Address stackVarToAsmOperand(const Variable *Var) const; |
| 73 | 73 |
| 74 enum X86InstructionSet { | 74 enum X86InstructionSet { |
| 75 // SSE2 is the PNaCl baseline instruction set. | 75 // SSE2 is the PNaCl baseline instruction set. |
| 76 SSE2, | 76 SSE2, |
| 77 SSE4_1 | 77 SSE4_1 |
| 78 }; | 78 }; |
| 79 | 79 |
| 80 X86InstructionSet getInstructionSet() const { return InstructionSet; } | 80 X86InstructionSet getInstructionSet() const { return InstructionSet; } |
| 81 | 81 |
| 82 protected: | 82 protected: |
| 83 TargetX8632(Cfg *Func); | 83 TargetX8632(Cfg *Func); |
| 84 | 84 |
| 85 virtual void postLower(); | 85 void postLower() override; |
| 86 | 86 |
| 87 virtual void lowerAlloca(const InstAlloca *Inst); | 87 void lowerAlloca(const InstAlloca *Inst) override; |
| 88 virtual void lowerArithmetic(const InstArithmetic *Inst); | 88 void lowerArithmetic(const InstArithmetic *Inst) override; |
| 89 virtual void lowerAssign(const InstAssign *Inst); | 89 void lowerAssign(const InstAssign *Inst) override; |
| 90 virtual void lowerBr(const InstBr *Inst); | 90 void lowerBr(const InstBr *Inst) override; |
| 91 virtual void lowerCall(const InstCall *Inst); | 91 void lowerCall(const InstCall *Inst) override; |
| 92 virtual void lowerCast(const InstCast *Inst); | 92 void lowerCast(const InstCast *Inst) override; |
| 93 virtual void lowerExtractElement(const InstExtractElement *Inst); | 93 void lowerExtractElement(const InstExtractElement *Inst) override; |
| 94 virtual void lowerFcmp(const InstFcmp *Inst); | 94 void lowerFcmp(const InstFcmp *Inst) override; |
| 95 virtual void lowerIcmp(const InstIcmp *Inst); | 95 void lowerIcmp(const InstIcmp *Inst) override; |
| 96 virtual void lowerIntrinsicCall(const InstIntrinsicCall *Inst); | 96 void lowerIntrinsicCall(const InstIntrinsicCall *Inst) override; |
| 97 virtual void lowerInsertElement(const InstInsertElement *Inst); | 97 void lowerInsertElement(const InstInsertElement *Inst) override; |
| 98 virtual void lowerLoad(const InstLoad *Inst); | 98 void lowerLoad(const InstLoad *Inst) override; |
| 99 virtual void lowerPhi(const InstPhi *Inst); | 99 void lowerPhi(const InstPhi *Inst) override; |
| 100 virtual void lowerRet(const InstRet *Inst); | 100 void lowerRet(const InstRet *Inst) override; |
| 101 virtual void lowerSelect(const InstSelect *Inst); | 101 void lowerSelect(const InstSelect *Inst) override; |
| 102 virtual void lowerStore(const InstStore *Inst); | 102 void lowerStore(const InstStore *Inst) override; |
| 103 virtual void lowerSwitch(const InstSwitch *Inst); | 103 void lowerSwitch(const InstSwitch *Inst) override; |
| 104 virtual void lowerUnreachable(const InstUnreachable *Inst); | 104 void lowerUnreachable(const InstUnreachable *Inst) override; |
| 105 virtual void doAddressOptLoad(); | 105 void doAddressOptLoad() override; |
| 106 virtual void doAddressOptStore(); | 106 void doAddressOptStore() override; |
| 107 virtual void randomlyInsertNop(float Probability); | 107 void randomlyInsertNop(float Probability) override; |
| 108 | 108 |
| 109 // Naive lowering of cmpxchg. | 109 // Naive lowering of cmpxchg. |
| 110 void lowerAtomicCmpxchg(Variable *DestPrev, Operand *Ptr, Operand *Expected, | 110 void lowerAtomicCmpxchg(Variable *DestPrev, Operand *Ptr, Operand *Expected, |
| 111 Operand *Desired); | 111 Operand *Desired); |
| 112 // Attempt a more optimized lowering of cmpxchg. Returns true if optimized. | 112 // Attempt a more optimized lowering of cmpxchg. Returns true if optimized. |
| 113 bool tryOptimizedCmpxchgCmpBr(Variable *DestPrev, Operand *Ptr, | 113 bool tryOptimizedCmpxchgCmpBr(Variable *DestPrev, Operand *Ptr, |
| 114 Operand *Expected, Operand *Desired); | 114 Operand *Expected, Operand *Desired); |
| 115 void lowerAtomicRMW(Variable *Dest, uint32_t Operation, Operand *Ptr, | 115 void lowerAtomicRMW(Variable *Dest, uint32_t Operation, Operand *Ptr, |
| 116 Operand *Val); | 116 Operand *Val); |
| 117 void lowerCountZeros(bool Cttz, Type Ty, Variable *Dest, Operand *FirstVal, | 117 void lowerCountZeros(bool Cttz, Type Ty, Variable *Dest, Operand *FirstVal, |
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| 470 llvm::SmallBitVector ScratchRegs; | 470 llvm::SmallBitVector ScratchRegs; |
| 471 llvm::SmallBitVector RegsUsed; | 471 llvm::SmallBitVector RegsUsed; |
| 472 SizeT NextLabelNumber; | 472 SizeT NextLabelNumber; |
| 473 bool ComputedLiveRanges; | 473 bool ComputedLiveRanges; |
| 474 VarList PhysicalRegisters; | 474 VarList PhysicalRegisters; |
| 475 static IceString RegNames[]; | 475 static IceString RegNames[]; |
| 476 | 476 |
| 477 private: | 477 private: |
| 478 TargetX8632(const TargetX8632 &) LLVM_DELETED_FUNCTION; | 478 TargetX8632(const TargetX8632 &) LLVM_DELETED_FUNCTION; |
| 479 TargetX8632 &operator=(const TargetX8632 &) LLVM_DELETED_FUNCTION; | 479 TargetX8632 &operator=(const TargetX8632 &) LLVM_DELETED_FUNCTION; |
| 480 virtual ~TargetX8632() {} | 480 ~TargetX8632() override {} |
| 481 template <typename T> void emitConstantPool() const; | 481 template <typename T> void emitConstantPool() const; |
| 482 }; | 482 }; |
| 483 | 483 |
| 484 class TargetGlobalInitX8632 : public TargetGlobalInitLowering { | 484 class TargetGlobalInitX8632 : public TargetGlobalInitLowering { |
| 485 public: | 485 public: |
| 486 static TargetGlobalInitLowering *create(GlobalContext *Ctx) { | 486 static TargetGlobalInitLowering *create(GlobalContext *Ctx) { |
| 487 return new TargetGlobalInitX8632(Ctx); | 487 return new TargetGlobalInitX8632(Ctx); |
| 488 } | 488 } |
| 489 virtual void lower(const IceString &Name, SizeT Align, bool IsInternal, | 489 void lower(const IceString &Name, SizeT Align, bool IsInternal, bool IsConst, |
| 490 bool IsConst, bool IsZeroInitializer, SizeT Size, | 490 bool IsZeroInitializer, SizeT Size, const char *Data, |
| 491 const char *Data, bool DisableTranslation); | 491 bool DisableTranslation) override; |
| 492 | 492 |
| 493 protected: | 493 protected: |
| 494 TargetGlobalInitX8632(GlobalContext *Ctx); | 494 TargetGlobalInitX8632(GlobalContext *Ctx); |
| 495 | 495 |
| 496 private: | 496 private: |
| 497 TargetGlobalInitX8632(const TargetGlobalInitX8632 &) LLVM_DELETED_FUNCTION; | 497 TargetGlobalInitX8632(const TargetGlobalInitX8632 &) LLVM_DELETED_FUNCTION; |
| 498 TargetGlobalInitX8632 & | 498 TargetGlobalInitX8632 & |
| 499 operator=(const TargetGlobalInitX8632 &) LLVM_DELETED_FUNCTION; | 499 operator=(const TargetGlobalInitX8632 &) LLVM_DELETED_FUNCTION; |
| 500 virtual ~TargetGlobalInitX8632() {} | 500 ~TargetGlobalInitX8632() override {} |
| 501 }; | 501 }; |
| 502 | 502 |
| 503 template <> void ConstantInteger32::emit(GlobalContext *Ctx) const; | 503 template <> void ConstantInteger32::emit(GlobalContext *Ctx) const; |
| 504 template <> void ConstantInteger64::emit(GlobalContext *Ctx) const; | 504 template <> void ConstantInteger64::emit(GlobalContext *Ctx) const; |
| 505 template <> void ConstantFloat::emit(GlobalContext *Ctx) const; | 505 template <> void ConstantFloat::emit(GlobalContext *Ctx) const; |
| 506 template <> void ConstantDouble::emit(GlobalContext *Ctx) const; | 506 template <> void ConstantDouble::emit(GlobalContext *Ctx) const; |
| 507 | 507 |
| 508 } // end of namespace Ice | 508 } // end of namespace Ice |
| 509 | 509 |
| 510 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_H | 510 #endif // SUBZERO_SRC_ICETARGETLOWERINGX8632_H |
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