1 //===-- MCTargetDesc/AMDGPUMCAsmInfo.cpp - Assembly Info ------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 /// \file 8 //===----------------------------------------------------------------------===// 9 10 #include "AMDGPUMCAsmInfo.h" 11 #include "llvm/ADT/Triple.h" 12 #include "llvm/MC/MCSubtargetInfo.h" 13 #include "MCTargetDesc/AMDGPUMCTargetDesc.h" 14 15 using namespace llvm; 16 17 AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(const Triple &TT, 18 const MCTargetOptions &Options) 19 : MCAsmInfoELF() { 20 CodePointerSize = (TT.getArch() == Triple::amdgcn) ? 8 : 4; 21 StackGrowsUp = true; 22 HasSingleParameterDotFile = false; 23 //===------------------------------------------------------------------===// 24 MinInstAlignment = 4; 25 26 // This is the maximum instruction encoded size for gfx10. With a known 27 // subtarget, it can be reduced to 8 bytes. 28 MaxInstLength = (TT.getArch() == Triple::amdgcn) ? 20 : 16; 29 SeparatorString = "\n"; 30 CommentString = ";"; 31 PrivateLabelPrefix = ""; 32 InlineAsmStart = ";#ASMSTART"; 33 InlineAsmEnd = ";#ASMEND"; 34 35 //===--- Data Emission Directives -------------------------------------===// 36 SunStyleELFSectionSwitchSyntax = true; 37 UsesELFSectionDirectiveForBSS = true; 38 39 //===--- Global Variable Emission Directives --------------------------===// 40 HasAggressiveSymbolFolding = true; 41 COMMDirectiveAlignmentIsInBytes = false; 42 HasNoDeadStrip = true; 43 WeakRefDirective = ".weakref\t"; 44 //===--- Dwarf Emission Directives -----------------------------------===// 45 SupportsDebugInformation = true; 46 DwarfRegNumForCFI = true; 47 48 UseIntegratedAssembler = false; 49 } 50 51 bool AMDGPUMCAsmInfo::shouldOmitSectionDirective(StringRef SectionName) const { 52 return SectionName == ".hsatext" || SectionName == ".hsadata_global_agent" || 53 SectionName == ".hsadata_global_program" || 54 SectionName == ".hsarodata_readonly_agent" || 55 MCAsmInfo::shouldOmitSectionDirective(SectionName); 56 } 57 58 unsigned AMDGPUMCAsmInfo::getMaxInstLength(const MCSubtargetInfo *STI) const { 59 if (!STI || STI->getTargetTriple().getArch() == Triple::r600) 60 return MaxInstLength; 61 62 // Maximum for NSA encoded images 63 if (STI->getFeatureBits()[AMDGPU::FeatureNSAEncoding]) 64 return 20; 65 66 // 64-bit instruction with 32-bit literal. 67 if (STI->getFeatureBits()[AMDGPU::FeatureVOP3Literal]) 68 return 12; 69 70 return 8; 71 } 72