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1 //===- subzero/src/IceTargetLoweringX8632.cpp - x86-32 lowering -----------===// | 1 //===- subzero/src/IceTargetLoweringX8632.cpp - x86-32 lowering -----------===// |
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 TargetLoweringX8632 class, which | 10 // This file implements the TargetLoweringX8632 class, which |
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1006 // Use memcpy() to copy bits from Value into RawValue in a way | 1006 // Use memcpy() to copy bits from Value into RawValue in a way |
1007 // that avoids breaking strict-aliasing rules. | 1007 // that avoids breaking strict-aliasing rules. |
1008 typename T::PrimitiveIntType RawValue; | 1008 typename T::PrimitiveIntType RawValue; |
1009 memcpy(&RawValue, &Value, sizeof(Value)); | 1009 memcpy(&RawValue, &Value, sizeof(Value)); |
1010 char buf[30]; | 1010 char buf[30]; |
1011 int CharsPrinted = | 1011 int CharsPrinted = |
1012 snprintf(buf, llvm::array_lengthof(buf), T::PrintfString, RawValue); | 1012 snprintf(buf, llvm::array_lengthof(buf), T::PrintfString, RawValue); |
1013 assert(CharsPrinted >= 0 && | 1013 assert(CharsPrinted >= 0 && |
1014 (size_t)CharsPrinted < llvm::array_lengthof(buf)); | 1014 (size_t)CharsPrinted < llvm::array_lengthof(buf)); |
1015 (void)CharsPrinted; // avoid warnings if asserts are disabled | 1015 (void)CharsPrinted; // avoid warnings if asserts are disabled |
1016 Str << ".L$" << Ty << "$" << Const->getPoolEntryID() << ":\n"; | 1016 Const->emitPoolLabel(Str); |
1017 Str << "\t" << T::AsmTag << "\t" << buf << "\t# " << T::TypeName << " " | 1017 Str << ":\n\t" << T::AsmTag << "\t" << buf << "\t# " << T::TypeName << " " |
1018 << Value << "\n"; | 1018 << Value << "\n"; |
1019 } | 1019 } |
1020 } | 1020 } |
1021 | 1021 |
1022 void TargetX8632::emitConstants() const { | 1022 void TargetX8632::emitConstants() const { |
1023 // No need to emit constants from the int pool since (for x86) they | 1023 // No need to emit constants from the int pool since (for x86) they |
1024 // are embedded as immediates in the instructions, just emit float/double. | 1024 // are embedded as immediates in the instructions, just emit float/double. |
1025 if (Ctx->getFlags().UseELFWriter) { | 1025 if (Ctx->getFlags().UseELFWriter) { |
1026 ELFObjectWriter *Writer = Ctx->getObjectWriter(); | 1026 ELFObjectWriter *Writer = Ctx->getObjectWriter(); |
1027 Writer->writeConstantPool<ConstantFloat>(IceType_f32); | 1027 Writer->writeConstantPool<ConstantFloat>(IceType_f32); |
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4603 } | 4603 } |
4604 | 4604 |
4605 template <> void ConstantInteger64::emit(GlobalContext *) const { | 4605 template <> void ConstantInteger64::emit(GlobalContext *) const { |
4606 llvm_unreachable("Not expecting to emit 64-bit integers"); | 4606 llvm_unreachable("Not expecting to emit 64-bit integers"); |
4607 } | 4607 } |
4608 | 4608 |
4609 template <> void ConstantFloat::emit(GlobalContext *Ctx) const { | 4609 template <> void ConstantFloat::emit(GlobalContext *Ctx) const { |
4610 if (!ALLOW_DUMP) | 4610 if (!ALLOW_DUMP) |
4611 return; | 4611 return; |
4612 Ostream &Str = Ctx->getStrEmit(); | 4612 Ostream &Str = Ctx->getStrEmit(); |
4613 Str << ".L$" << IceType_f32 << "$" << getPoolEntryID(); | 4613 emitPoolLabel(Str); |
4614 } | 4614 } |
4615 | 4615 |
4616 template <> void ConstantDouble::emit(GlobalContext *Ctx) const { | 4616 template <> void ConstantDouble::emit(GlobalContext *Ctx) const { |
4617 if (!ALLOW_DUMP) | 4617 if (!ALLOW_DUMP) |
4618 return; | 4618 return; |
4619 Ostream &Str = Ctx->getStrEmit(); | 4619 Ostream &Str = Ctx->getStrEmit(); |
4620 Str << ".L$" << IceType_f64 << "$" << getPoolEntryID(); | 4620 emitPoolLabel(Str); |
4621 } | 4621 } |
4622 | 4622 |
4623 void ConstantUndef::emit(GlobalContext *) const { | 4623 void ConstantUndef::emit(GlobalContext *) const { |
4624 llvm_unreachable("undef value encountered by emitter."); | 4624 llvm_unreachable("undef value encountered by emitter."); |
4625 } | 4625 } |
4626 | 4626 |
4627 TargetGlobalInitX8632::TargetGlobalInitX8632(GlobalContext *Ctx) | 4627 TargetGlobalInitX8632::TargetGlobalInitX8632(GlobalContext *Ctx) |
4628 : TargetGlobalInitLowering(Ctx) {} | 4628 : TargetGlobalInitLowering(Ctx) {} |
4629 | 4629 |
4630 void TargetGlobalInitX8632::lower(const VariableDeclaration &Var) { | 4630 void TargetGlobalInitX8632::lower(const VariableDeclaration &Var) { |
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4717 } else if (IsConstant || IsExternal) | 4717 } else if (IsConstant || IsExternal) |
4718 Str << "\t.zero\t" << Size << "\n"; | 4718 Str << "\t.zero\t" << Size << "\n"; |
4719 // Size is part of .comm. | 4719 // Size is part of .comm. |
4720 | 4720 |
4721 if (IsConstant || HasNonzeroInitializer || IsExternal) | 4721 if (IsConstant || HasNonzeroInitializer || IsExternal) |
4722 Str << "\t.size\t" << MangledName << ", " << Size << "\n"; | 4722 Str << "\t.size\t" << MangledName << ", " << Size << "\n"; |
4723 // Size is part of .comm. | 4723 // Size is part of .comm. |
4724 } | 4724 } |
4725 | 4725 |
4726 } // end of namespace Ice | 4726 } // end of namespace Ice |
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