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Side by Side Diff: src/IceTargetLoweringARM32.cpp

Issue 1257283004: Iasm and obj lowering for advanced switch lowering. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Rebase Created 5 years, 4 months ago
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1 //===- subzero/src/IceTargetLoweringARM32.cpp - ARM32 lowering ------------===// 1 //===- subzero/src/IceTargetLoweringARM32.cpp - ARM32 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 /// \file 10 /// \file
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376 // Specially mark SP and LR as an "argument" so that it is considered 376 // Specially mark SP and LR as an "argument" so that it is considered
377 // live upon function entry. 377 // live upon function entry.
378 if (RegNum == RegARM32::Reg_sp || RegNum == RegARM32::Reg_lr) { 378 if (RegNum == RegARM32::Reg_sp || RegNum == RegARM32::Reg_lr) {
379 Func->addImplicitArg(Reg); 379 Func->addImplicitArg(Reg);
380 Reg->setIgnoreLiveness(); 380 Reg->setIgnoreLiveness();
381 } 381 }
382 } 382 }
383 return Reg; 383 return Reg;
384 } 384 }
385 385
386 void TargetARM32::emitJumpTable(const Cfg *Func,
387 const InstJumpTable *JumpTable) const {
388 (void)JumpTable;
389 UnimplementedError(Func->getContext()->getFlags());
390 }
391
386 void TargetARM32::emitVariable(const Variable *Var) const { 392 void TargetARM32::emitVariable(const Variable *Var) const {
387 Ostream &Str = Ctx->getStrEmit(); 393 Ostream &Str = Ctx->getStrEmit();
388 if (Var->hasReg()) { 394 if (Var->hasReg()) {
389 Str << getRegName(Var->getRegNum(), Var->getType()); 395 Str << getRegName(Var->getRegNum(), Var->getType());
390 return; 396 return;
391 } 397 }
392 if (Var->getWeight().isInf()) { 398 if (Var->getWeight().isInf()) {
393 llvm::report_fatal_error( 399 llvm::report_fatal_error(
394 "Infinite-weight Variable has no register assigned"); 400 "Infinite-weight Variable has no register assigned");
395 } 401 }
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2702 } break; 2708 } break;
2703 } 2709 }
2704 } 2710 }
2705 2711
2706 void TargetDataARM32::lowerConstants() { 2712 void TargetDataARM32::lowerConstants() {
2707 if (Ctx->getFlags().getDisableTranslation()) 2713 if (Ctx->getFlags().getDisableTranslation())
2708 return; 2714 return;
2709 UnimplementedError(Ctx->getFlags()); 2715 UnimplementedError(Ctx->getFlags());
2710 } 2716 }
2711 2717
2718 void TargetDataARM32::lowerJumpTables() {
2719 if (Ctx->getFlags().getDisableTranslation())
2720 return;
2721 UnimplementedError(Ctx->getFlags());
2722 }
2723
2712 TargetHeaderARM32::TargetHeaderARM32(GlobalContext *Ctx) 2724 TargetHeaderARM32::TargetHeaderARM32(GlobalContext *Ctx)
2713 : TargetHeaderLowering(Ctx), CPUFeatures(Ctx->getFlags()) {} 2725 : TargetHeaderLowering(Ctx), CPUFeatures(Ctx->getFlags()) {}
2714 2726
2715 void TargetHeaderARM32::lower() { 2727 void TargetHeaderARM32::lower() {
2716 OstreamLocker L(Ctx); 2728 OstreamLocker L(Ctx);
2717 Ostream &Str = Ctx->getStrEmit(); 2729 Ostream &Str = Ctx->getStrEmit();
2718 Str << ".syntax unified\n"; 2730 Str << ".syntax unified\n";
2719 // Emit build attributes in format: .eabi_attribute TAG, VALUE. 2731 // Emit build attributes in format: .eabi_attribute TAG, VALUE.
2720 // See Sec. 2 of "Addenda to, and Errata in the ABI for the ARM architecture" 2732 // See Sec. 2 of "Addenda to, and Errata in the ABI for the ARM architecture"
2721 // http://infocenter.arm.com/help/topic/com.arm.doc.ihi0045d/IHI0045D_ABI_adde nda.pdf 2733 // http://infocenter.arm.com/help/topic/com.arm.doc.ihi0045d/IHI0045D_ABI_adde nda.pdf
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2751 << ".eabi_attribute 68, 1 @ Tag_Virtualization_use\n"; 2763 << ".eabi_attribute 68, 1 @ Tag_Virtualization_use\n";
2752 if (CPUFeatures.hasFeature(TargetARM32Features::HWDivArm)) { 2764 if (CPUFeatures.hasFeature(TargetARM32Features::HWDivArm)) {
2753 Str << ".eabi_attribute 44, 2 @ Tag_DIV_use\n"; 2765 Str << ".eabi_attribute 44, 2 @ Tag_DIV_use\n";
2754 } 2766 }
2755 // Technically R9 is used for TLS with Sandboxing, and we reserve it. 2767 // Technically R9 is used for TLS with Sandboxing, and we reserve it.
2756 // However, for compatibility with current NaCl LLVM, don't claim that. 2768 // However, for compatibility with current NaCl LLVM, don't claim that.
2757 Str << ".eabi_attribute 14, 3 @ Tag_ABI_PCS_R9_use: Not used\n"; 2769 Str << ".eabi_attribute 14, 3 @ Tag_ABI_PCS_R9_use: Not used\n";
2758 } 2770 }
2759 2771
2760 } // end of namespace Ice 2772 } // end of namespace Ice
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