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Side by Side Diff: src/IceInstX8632.cpp

Issue 1151663004: Subzero ARM: do lowerIcmp, lowerBr, and a bit of lowerCall. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: fix Created 5 years, 7 months ago
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1 //===- subzero/src/IceInstX8632.cpp - X86-32 instruction implementation ---===// 1 //===- subzero/src/IceInstX8632.cpp - X86-32 instruction implementation ---===//
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 implements the InstX8632 and OperandX8632 classes, 10 // This file implements the InstX8632 and OperandX8632 classes,
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576 Str << " = "; 576 Str << " = ";
577 } 577 }
578 Str << "call "; 578 Str << "call ";
579 getCallTarget()->dump(Func); 579 getCallTarget()->dump(Func);
580 } 580 }
581 581
582 // The ShiftHack parameter is used to emit "cl" instead of "ecx" for 582 // The ShiftHack parameter is used to emit "cl" instead of "ecx" for
583 // shift instructions, in order to be syntactically valid. The 583 // shift instructions, in order to be syntactically valid. The
584 // Opcode parameter needs to be char* and not IceString because of 584 // Opcode parameter needs to be char* and not IceString because of
585 // template issues. 585 // template issues.
586 void emitTwoAddress(const char *Opcode, const Inst *Inst, const Cfg *Func, 586 void InstX8632::emitTwoAddress(const char *Opcode, const Inst *Inst,
587 bool ShiftHack) { 587 const Cfg *Func, bool ShiftHack) {
588 if (!ALLOW_DUMP) 588 if (!ALLOW_DUMP)
589 return; 589 return;
590 Ostream &Str = Func->getContext()->getStrEmit(); 590 Ostream &Str = Func->getContext()->getStrEmit();
591 assert(Inst->getSrcSize() == 2); 591 assert(Inst->getSrcSize() == 2);
592 Variable *Dest = Inst->getDest(); 592 Variable *Dest = Inst->getDest();
593 assert(Dest == Inst->getSrc(0)); 593 assert(Dest == Inst->getSrc(0));
594 Operand *Src1 = Inst->getSrc(1); 594 Operand *Src1 = Inst->getSrc(1);
595 Str << "\t" << Opcode << InstX8632::getWidthString(Dest->getType()) << "\t"; 595 Str << "\t" << Opcode << InstX8632::getWidthString(Dest->getType()) << "\t";
596 const auto ShiftReg = llvm::dyn_cast<Variable>(Src1); 596 const auto ShiftReg = llvm::dyn_cast<Variable>(Src1);
597 if (ShiftHack && ShiftReg && ShiftReg->getRegNum() == RegX8632::Reg_ecx) 597 if (ShiftHack && ShiftReg && ShiftReg->getRegNum() == RegX8632::Reg_ecx)
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696 X8632::AssemblerX8632 *Asm = Func->getAssembler<X8632::AssemblerX8632>(); 696 X8632::AssemblerX8632 *Asm = Func->getAssembler<X8632::AssemblerX8632>();
697 Op0Mem->emitSegmentOverride(Asm); 697 Op0Mem->emitSegmentOverride(Asm);
698 emitIASAddrOpTyGPR(Func, Ty, Op0Mem->toAsmAddress(Asm), Op1, Emitter); 698 emitIASAddrOpTyGPR(Func, Ty, Op0Mem->toAsmAddress(Asm), Op1, Emitter);
699 } else if (const auto Split = llvm::dyn_cast<VariableSplit>(Op0)) { 699 } else if (const auto Split = llvm::dyn_cast<VariableSplit>(Op0)) {
700 emitIASAddrOpTyGPR(Func, Ty, Split->toAsmAddress(Func), Op1, Emitter); 700 emitIASAddrOpTyGPR(Func, Ty, Split->toAsmAddress(Func), Op1, Emitter);
701 } else { 701 } else {
702 llvm_unreachable("Unexpected operand type"); 702 llvm_unreachable("Unexpected operand type");
703 } 703 }
704 } 704 }
705 705
706 void emitIASGPRShift(const Cfg *Func, Type Ty, const Variable *Var, 706 void InstX8632::emitIASGPRShift(
707 const Operand *Src, 707 const Cfg *Func, Type Ty, const Variable *Var, const Operand *Src,
708 const X8632::AssemblerX8632::GPREmitterShiftOp &Emitter) { 708 const X8632::AssemblerX8632::GPREmitterShiftOp &Emitter) {
709 X8632::AssemblerX8632 *Asm = Func->getAssembler<X8632::AssemblerX8632>(); 709 X8632::AssemblerX8632 *Asm = Func->getAssembler<X8632::AssemblerX8632>();
710 // Technically, the Dest Var can be mem as well, but we only use Reg. 710 // Technically, the Dest Var can be mem as well, but we only use Reg.
711 // We can extend this to check Dest if we decide to use that form. 711 // We can extend this to check Dest if we decide to use that form.
712 assert(Var->hasReg()); 712 assert(Var->hasReg());
713 // We cheat a little and use GPRRegister even for byte operations. 713 // We cheat a little and use GPRRegister even for byte operations.
714 RegX8632::GPRRegister VarReg = 714 RegX8632::GPRRegister VarReg =
715 RegX8632::getEncodedByteRegOrGPR(Ty, Var->getRegNum()); 715 RegX8632::getEncodedByteRegOrGPR(Ty, Var->getRegNum());
716 // Src must be reg == ECX or an Imm8. 716 // Src must be reg == ECX or an Imm8.
717 // This is asserted by the assembler. 717 // This is asserted by the assembler.
718 if (const auto SrcVar = llvm::dyn_cast<Variable>(Src)) { 718 if (const auto SrcVar = llvm::dyn_cast<Variable>(Src)) {
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3002 } 3002 }
3003 Str << "("; 3003 Str << "(";
3004 if (Func) 3004 if (Func)
3005 Var->dump(Func); 3005 Var->dump(Func);
3006 else 3006 else
3007 Var->dump(Str); 3007 Var->dump(Str);
3008 Str << ")"; 3008 Str << ")";
3009 } 3009 }
3010 3010
3011 } // end of namespace Ice 3011 } // end of namespace Ice
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