diff options
Diffstat (limited to 'llvm/lib')
-rw-r--r-- | llvm/lib/CodeGen/TargetInstrInfo.cpp | 8 | ||||
-rw-r--r-- | llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp | 12 | ||||
-rw-r--r-- | llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h | 5 | ||||
-rw-r--r-- | llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp | 22 | ||||
-rw-r--r-- | llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.h | 1 | ||||
-rw-r--r-- | llvm/lib/Target/AMDGPU/SIInstrInfo.cpp | 3 | ||||
-rw-r--r-- | llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp | 6 | ||||
-rw-r--r-- | llvm/lib/Target/Hexagon/HexagonInstrInfo.h | 6 |
8 files changed, 47 insertions, 16 deletions
diff --git a/llvm/lib/CodeGen/TargetInstrInfo.cpp b/llvm/lib/CodeGen/TargetInstrInfo.cpp index d397c3334b8..ab13d3482c1 100644 --- a/llvm/lib/CodeGen/TargetInstrInfo.cpp +++ b/llvm/lib/CodeGen/TargetInstrInfo.cpp @@ -85,11 +85,13 @@ static bool isAsmComment(const char *Str, const MCAsmInfo &MAI) { /// simple--i.e. not a logical or arithmetic expression--size values without /// the optional fill value. This is primarily used for creating arbitrary /// sized inline asm blocks for testing purposes. -unsigned TargetInstrInfo::getInlineAsmLength(const char *Str, - const MCAsmInfo &MAI) const { +unsigned TargetInstrInfo::getInlineAsmLength( + const char *Str, + const MCAsmInfo &MAI, const TargetSubtargetInfo *STI) const { // Count the number of instructions in the asm. bool AtInsnStart = true; unsigned Length = 0; + const unsigned MaxInstLength = MAI.getMaxInstLength(STI); for (; *Str; ++Str) { if (*Str == '\n' || strncmp(Str, MAI.getSeparatorString(), strlen(MAI.getSeparatorString())) == 0) { @@ -101,7 +103,7 @@ unsigned TargetInstrInfo::getInlineAsmLength(const char *Str, } if (AtInsnStart && !std::isspace(static_cast<unsigned char>(*Str))) { - unsigned AddLength = MAI.getMaxInstLength(); + unsigned AddLength = MaxInstLength; if (strncmp(Str, ".space", 6) == 0) { char *EStr; int SpaceSize; diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp index ea01416cd15..7db736766d2 100644 --- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp +++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp @@ -28,6 +28,7 @@ #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/Twine.h" #include "llvm/BinaryFormat/ELF.h" +#include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" #include "llvm/MC/MCDisassembler/MCDisassembler.h" #include "llvm/MC/MCExpr.h" @@ -56,6 +57,12 @@ using namespace llvm; using DecodeStatus = llvm::MCDisassembler::DecodeStatus; +AMDGPUDisassembler::AMDGPUDisassembler(const MCSubtargetInfo &STI, + MCContext &Ctx, + MCInstrInfo const *MCII) : + MCDisassembler(STI, Ctx), MCII(MCII), MRI(*Ctx.getRegisterInfo()), + TargetMaxInstBytes(Ctx.getAsmInfo()->getMaxInstLength(&STI)) {} + inline static MCDisassembler::DecodeStatus addOperand(MCInst &Inst, const MCOperand& Opnd) { Inst.addOperand(Opnd); @@ -186,10 +193,7 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size, if (!STI.getFeatureBits()[AMDGPU::FeatureGCN3Encoding] && !isGFX10()) report_fatal_error("Disassembly not yet supported for subtarget"); - unsigned MaxInstBytesNum = (std::min)( - STI.getFeatureBits()[AMDGPU::FeatureGFX10] ? (size_t) 20 : - STI.getFeatureBits()[AMDGPU::FeatureVOP3Literal] ? (size_t) 12 : (size_t)8, - Bytes_.size()); + unsigned MaxInstBytesNum = std::min((size_t)TargetMaxInstBytes, Bytes_.size()); Bytes = Bytes_.slice(0, MaxInstBytesNum); DecodeStatus Res = MCDisassembler::Fail; diff --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h index 63cadd16303..3467d330dd8 100644 --- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h +++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.h @@ -41,15 +41,14 @@ class AMDGPUDisassembler : public MCDisassembler { private: std::unique_ptr<MCInstrInfo const> const MCII; const MCRegisterInfo &MRI; + const unsigned TargetMaxInstBytes; mutable ArrayRef<uint8_t> Bytes; mutable uint32_t Literal; mutable bool HasLiteral; public: AMDGPUDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx, - MCInstrInfo const *MCII) : - MCDisassembler(STI, Ctx), MCII(MCII), MRI(*Ctx.getRegisterInfo()) {} - + MCInstrInfo const *MCII); ~AMDGPUDisassembler() override = default; DecodeStatus getInstruction(MCInst &MI, uint64_t &Size, diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp index 2f3dbdc96f7..9e04ab9bae9 100644 --- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp +++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.cpp @@ -9,6 +9,8 @@ #include "AMDGPUMCAsmInfo.h" #include "llvm/ADT/Triple.h" +#include "llvm/MC/MCSubtargetInfo.h" +#include "MCTargetDesc/AMDGPUMCTargetDesc.h" using namespace llvm; @@ -18,7 +20,10 @@ AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(const Triple &TT) : MCAsmInfoELF() { HasSingleParameterDotFile = false; //===------------------------------------------------------------------===// MinInstAlignment = 4; - MaxInstLength = (TT.getArch() == Triple::amdgcn) ? 8 : 16; + + // This is the maximum instruction encoded size for gfx10. With a known + // subtarget, it can be reduced to 8 bytes. + MaxInstLength = (TT.getArch() == Triple::amdgcn) ? 20 : 16; SeparatorString = "\n"; CommentString = ";"; PrivateLabelPrefix = ""; @@ -44,3 +49,18 @@ bool AMDGPUMCAsmInfo::shouldOmitSectionDirective(StringRef SectionName) const { SectionName == ".hsarodata_readonly_agent" || MCAsmInfo::shouldOmitSectionDirective(SectionName); } + +unsigned AMDGPUMCAsmInfo::getMaxInstLength(const MCSubtargetInfo *STI) const { + if (!STI || STI->getTargetTriple().getArch() == Triple::r600) + return MaxInstLength; + + // Maximum for NSA encoded images + if (STI->getFeatureBits()[AMDGPU::FeatureNSAEncoding]) + return 20; + + // 64-bit instruction with 32-bit literal. + if (STI->getFeatureBits()[AMDGPU::FeatureVOP3Literal]) + return 12; + + return 8; +} diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.h b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.h index a3c069ce970..71e63ec27a8 100644 --- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.h +++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCAsmInfo.h @@ -27,6 +27,7 @@ class AMDGPUMCAsmInfo : public MCAsmInfoELF { public: explicit AMDGPUMCAsmInfo(const Triple &TT); bool shouldOmitSectionDirective(StringRef SectionName) const override; + unsigned getMaxInstLength(const MCSubtargetInfo *STI) const override; }; } // namespace llvm #endif diff --git a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp index e781253dd01..e42ed3505cf 100644 --- a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp +++ b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp @@ -5578,7 +5578,8 @@ unsigned SIInstrInfo::getInstSizeInBytes(const MachineInstr &MI) const { case TargetOpcode::INLINEASM_BR: { const MachineFunction *MF = MI.getParent()->getParent(); const char *AsmStr = MI.getOperand(0).getSymbolName(); - return getInlineAsmLength(AsmStr, *MF->getTarget().getMCAsmInfo()); + return getInlineAsmLength(AsmStr, *MF->getTarget().getMCAsmInfo(), + &MF->getSubtarget()); } default: return DescSize; diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp index 545dd15dde2..d525baa0301 100644 --- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp +++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp @@ -1712,17 +1712,19 @@ bool HexagonInstrInfo::isSchedulingBoundary(const MachineInstr &MI, /// Hexagon counts the number of ##'s and adjust for that many /// constant exenders. unsigned HexagonInstrInfo::getInlineAsmLength(const char *Str, - const MCAsmInfo &MAI) const { + const MCAsmInfo &MAI, + const TargetSubtargetInfo *STI) const { StringRef AStr(Str); // Count the number of instructions in the asm. bool atInsnStart = true; unsigned Length = 0; + const unsigned MaxInstLength = MAI.getMaxInstLength(STI); for (; *Str; ++Str) { if (*Str == '\n' || strncmp(Str, MAI.getSeparatorString(), strlen(MAI.getSeparatorString())) == 0) atInsnStart = true; if (atInsnStart && !std::isspace(static_cast<unsigned char>(*Str))) { - Length += MAI.getMaxInstLength(); + Length += MaxInstLength; atInsnStart = false; } if (atInsnStart && strncmp(Str, MAI.getCommentString().data(), diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.h b/llvm/lib/Target/Hexagon/HexagonInstrInfo.h index 8d339641ba4..6c4dbfedb31 100644 --- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.h +++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.h @@ -264,8 +264,10 @@ public: /// Measure the specified inline asm to determine an approximation of its /// length. - unsigned getInlineAsmLength(const char *Str, - const MCAsmInfo &MAI) const override; + unsigned getInlineAsmLength( + const char *Str, + const MCAsmInfo &MAI, + const TargetSubtargetInfo *STI = nullptr) const override; /// Allocate and return a hazard recognizer to use for this target when /// scheduling the machine instructions after register allocation. |