| //===-- X86.td - Target definition file for the Intel X86 --*- tablegen -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This is a target description file for the Intel i386 architecture, referred |
| // to here as the "X86" architecture. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Get the target-independent interfaces which we are implementing... |
| // |
| include "llvm/Target/Target.td" |
| |
| //===----------------------------------------------------------------------===// |
| // X86 Subtarget state |
| // |
| |
| def Mode64Bit : SubtargetFeature<"64bit-mode", "In64BitMode", "true", |
| "64-bit mode (x86_64)">; |
| def Mode32Bit : SubtargetFeature<"32bit-mode", "In32BitMode", "true", |
| "32-bit mode (80386)">; |
| def Mode16Bit : SubtargetFeature<"16bit-mode", "In16BitMode", "true", |
| "16-bit mode (i8086)">; |
| |
| //===----------------------------------------------------------------------===// |
| // X86 Subtarget features |
| //===----------------------------------------------------------------------===// |
| |
| def FeatureX87 : SubtargetFeature<"x87","HasX87", "true", |
| "Enable X87 float instructions">; |
| |
| def FeatureCMOV : SubtargetFeature<"cmov","HasCMov", "true", |
| "Enable conditional move instructions">; |
| |
| def FeaturePOPCNT : SubtargetFeature<"popcnt", "HasPOPCNT", "true", |
| "Support POPCNT instruction">; |
| |
| def FeatureFXSR : SubtargetFeature<"fxsr", "HasFXSR", "true", |
| "Support fxsave/fxrestore instructions">; |
| |
| def FeatureXSAVE : SubtargetFeature<"xsave", "HasXSAVE", "true", |
| "Support xsave instructions">; |
| |
| def FeatureXSAVEOPT: SubtargetFeature<"xsaveopt", "HasXSAVEOPT", "true", |
| "Support xsaveopt instructions">; |
| |
| def FeatureXSAVEC : SubtargetFeature<"xsavec", "HasXSAVEC", "true", |
| "Support xsavec instructions">; |
| |
| def FeatureXSAVES : SubtargetFeature<"xsaves", "HasXSAVES", "true", |
| "Support xsaves instructions">; |
| |
| def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1", |
| "Enable SSE instructions", |
| // SSE codegen depends on cmovs, and all |
| // SSE1+ processors support them. |
| [FeatureCMOV]>; |
| def FeatureSSE2 : SubtargetFeature<"sse2", "X86SSELevel", "SSE2", |
| "Enable SSE2 instructions", |
| [FeatureSSE1]>; |
| def FeatureSSE3 : SubtargetFeature<"sse3", "X86SSELevel", "SSE3", |
| "Enable SSE3 instructions", |
| [FeatureSSE2]>; |
| def FeatureSSSE3 : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3", |
| "Enable SSSE3 instructions", |
| [FeatureSSE3]>; |
| def FeatureSSE41 : SubtargetFeature<"sse4.1", "X86SSELevel", "SSE41", |
| "Enable SSE 4.1 instructions", |
| [FeatureSSSE3]>; |
| def FeatureSSE42 : SubtargetFeature<"sse4.2", "X86SSELevel", "SSE42", |
| "Enable SSE 4.2 instructions", |
| [FeatureSSE41]>; |
| // The MMX subtarget feature is separate from the rest of the SSE features |
| // because it's important (for odd compatibility reasons) to be able to |
| // turn it off explicitly while allowing SSE+ to be on. |
| def FeatureMMX : SubtargetFeature<"mmx","X863DNowLevel", "MMX", |
| "Enable MMX instructions">; |
| def Feature3DNow : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow", |
| "Enable 3DNow! instructions", |
| [FeatureMMX]>; |
| def Feature3DNowA : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA", |
| "Enable 3DNow! Athlon instructions", |
| [Feature3DNow]>; |
| // All x86-64 hardware has SSE2, but we don't mark SSE2 as an implied |
| // feature, because SSE2 can be disabled (e.g. for compiling OS kernels) |
| // without disabling 64-bit mode. |
| def Feature64Bit : SubtargetFeature<"64bit", "HasX86_64", "true", |
| "Support 64-bit instructions", |
| [FeatureCMOV]>; |
| def FeatureCMPXCHG16B : SubtargetFeature<"cx16", "HasCmpxchg16b", "true", |
| "64-bit with cmpxchg16b", |
| [Feature64Bit]>; |
| def FeatureSlowBTMem : SubtargetFeature<"slow-bt-mem", "IsBTMemSlow", "true", |
| "Bit testing of memory is slow">; |
| def FeatureSlowSHLD : SubtargetFeature<"slow-shld", "IsSHLDSlow", "true", |
| "SHLD instruction is slow">; |
| def FeatureSlowPMULLD : SubtargetFeature<"slow-pmulld", "IsPMULLDSlow", "true", |
| "PMULLD instruction is slow">; |
| // FIXME: This should not apply to CPUs that do not have SSE. |
| def FeatureSlowUAMem16 : SubtargetFeature<"slow-unaligned-mem-16", |
| "IsUAMem16Slow", "true", |
| "Slow unaligned 16-byte memory access">; |
| def FeatureSlowUAMem32 : SubtargetFeature<"slow-unaligned-mem-32", |
| "IsUAMem32Slow", "true", |
| "Slow unaligned 32-byte memory access">; |
| def FeatureSSE4A : SubtargetFeature<"sse4a", "HasSSE4A", "true", |
| "Support SSE 4a instructions", |
| [FeatureSSE3]>; |
| |
| def FeatureAVX : SubtargetFeature<"avx", "X86SSELevel", "AVX", |
| "Enable AVX instructions", |
| [FeatureSSE42]>; |
| def FeatureAVX2 : SubtargetFeature<"avx2", "X86SSELevel", "AVX2", |
| "Enable AVX2 instructions", |
| [FeatureAVX]>; |
| def FeatureAVX512 : SubtargetFeature<"avx512f", "X86SSELevel", "AVX512F", |
| "Enable AVX-512 instructions", |
| [FeatureAVX2]>; |
| def FeatureERI : SubtargetFeature<"avx512er", "HasERI", "true", |
| "Enable AVX-512 Exponential and Reciprocal Instructions", |
| [FeatureAVX512]>; |
| def FeatureCDI : SubtargetFeature<"avx512cd", "HasCDI", "true", |
| "Enable AVX-512 Conflict Detection Instructions", |
| [FeatureAVX512]>; |
| def FeatureVPOPCNTDQ : SubtargetFeature<"avx512vpopcntdq", "HasVPOPCNTDQ", |
| "true", "Enable AVX-512 Population Count Instructions", |
| [FeatureAVX512]>; |
| def FeaturePFI : SubtargetFeature<"avx512pf", "HasPFI", "true", |
| "Enable AVX-512 PreFetch Instructions", |
| [FeatureAVX512]>; |
| def FeaturePREFETCHWT1 : SubtargetFeature<"prefetchwt1", "HasPFPREFETCHWT1", |
| "true", |
| "Prefetch with Intent to Write and T1 Hint">; |
| def FeatureDQI : SubtargetFeature<"avx512dq", "HasDQI", "true", |
| "Enable AVX-512 Doubleword and Quadword Instructions", |
| [FeatureAVX512]>; |
| def FeatureBWI : SubtargetFeature<"avx512bw", "HasBWI", "true", |
| "Enable AVX-512 Byte and Word Instructions", |
| [FeatureAVX512]>; |
| def FeatureVLX : SubtargetFeature<"avx512vl", "HasVLX", "true", |
| "Enable AVX-512 Vector Length eXtensions", |
| [FeatureAVX512]>; |
| def FeatureVBMI : SubtargetFeature<"avx512vbmi", "HasVBMI", "true", |
| "Enable AVX-512 Vector Byte Manipulation Instructions", |
| [FeatureBWI]>; |
| def FeatureIFMA : SubtargetFeature<"avx512ifma", "HasIFMA", "true", |
| "Enable AVX-512 Integer Fused Multiple-Add", |
| [FeatureAVX512]>; |
| def FeaturePKU : SubtargetFeature<"pku", "HasPKU", "true", |
| "Enable protection keys">; |
| def FeaturePCLMUL : SubtargetFeature<"pclmul", "HasPCLMUL", "true", |
| "Enable packed carry-less multiplication instructions", |
| [FeatureSSE2]>; |
| def FeatureFMA : SubtargetFeature<"fma", "HasFMA", "true", |
| "Enable three-operand fused multiple-add", |
| [FeatureAVX]>; |
| def FeatureFMA4 : SubtargetFeature<"fma4", "HasFMA4", "true", |
| "Enable four-operand fused multiple-add", |
| [FeatureAVX, FeatureSSE4A]>; |
| def FeatureXOP : SubtargetFeature<"xop", "HasXOP", "true", |
| "Enable XOP instructions", |
| [FeatureFMA4]>; |
| def FeatureSSEUnalignedMem : SubtargetFeature<"sse-unaligned-mem", |
| "HasSSEUnalignedMem", "true", |
| "Allow unaligned memory operands with SSE instructions">; |
| def FeatureAES : SubtargetFeature<"aes", "HasAES", "true", |
| "Enable AES instructions", |
| [FeatureSSE2]>; |
| def FeatureTBM : SubtargetFeature<"tbm", "HasTBM", "true", |
| "Enable TBM instructions">; |
| def FeatureLWP : SubtargetFeature<"lwp", "HasLWP", "true", |
| "Enable LWP instructions">; |
| def FeatureMOVBE : SubtargetFeature<"movbe", "HasMOVBE", "true", |
| "Support MOVBE instruction">; |
| def FeatureRDRAND : SubtargetFeature<"rdrnd", "HasRDRAND", "true", |
| "Support RDRAND instruction">; |
| def FeatureF16C : SubtargetFeature<"f16c", "HasF16C", "true", |
| "Support 16-bit floating point conversion instructions", |
| [FeatureAVX]>; |
| def FeatureFSGSBase : SubtargetFeature<"fsgsbase", "HasFSGSBase", "true", |
| "Support FS/GS Base instructions">; |
| def FeatureLZCNT : SubtargetFeature<"lzcnt", "HasLZCNT", "true", |
| "Support LZCNT instruction">; |
| def FeatureBMI : SubtargetFeature<"bmi", "HasBMI", "true", |
| "Support BMI instructions">; |
| def FeatureBMI2 : SubtargetFeature<"bmi2", "HasBMI2", "true", |
| "Support BMI2 instructions">; |
| def FeatureRTM : SubtargetFeature<"rtm", "HasRTM", "true", |
| "Support RTM instructions">; |
| def FeatureADX : SubtargetFeature<"adx", "HasADX", "true", |
| "Support ADX instructions">; |
| def FeatureSHA : SubtargetFeature<"sha", "HasSHA", "true", |
| "Enable SHA instructions", |
| [FeatureSSE2]>; |
| def FeaturePRFCHW : SubtargetFeature<"prfchw", "HasPRFCHW", "true", |
| "Support PRFCHW instructions">; |
| def FeatureRDSEED : SubtargetFeature<"rdseed", "HasRDSEED", "true", |
| "Support RDSEED instruction">; |
| def FeatureLAHFSAHF : SubtargetFeature<"sahf", "HasLAHFSAHF", "true", |
| "Support LAHF and SAHF instructions">; |
| def FeatureMWAITX : SubtargetFeature<"mwaitx", "HasMWAITX", "true", |
| "Enable MONITORX/MWAITX timer functionality">; |
| def FeatureCLZERO : SubtargetFeature<"clzero", "HasCLZERO", "true", |
| "Enable Cache Line Zero">; |
| def FeatureMPX : SubtargetFeature<"mpx", "HasMPX", "true", |
| "Support MPX instructions">; |
| def FeatureLEAForSP : SubtargetFeature<"lea-sp", "UseLeaForSP", "true", |
| "Use LEA for adjusting the stack pointer">; |
| def FeatureSlowDivide32 : SubtargetFeature<"idivl-to-divb", |
| "HasSlowDivide32", "true", |
| "Use 8-bit divide for positive values less than 256">; |
| def FeatureSlowDivide64 : SubtargetFeature<"idivq-to-divl", |
| "HasSlowDivide64", "true", |
| "Use 32-bit divide for positive values less than 2^32">; |
| def FeaturePadShortFunctions : SubtargetFeature<"pad-short-functions", |
| "PadShortFunctions", "true", |
| "Pad short functions">; |
| def FeatureSGX : SubtargetFeature<"sgx", "HasSGX", "true", |
| "Enable Software Guard Extensions">; |
| def FeatureCLFLUSHOPT : SubtargetFeature<"clflushopt", "HasCLFLUSHOPT", "true", |
| "Flush A Cache Line Optimized">; |
| def FeatureCLWB : SubtargetFeature<"clwb", "HasCLWB", "true", |
| "Cache Line Write Back">; |
| // TODO: This feature ought to be renamed. |
| // What it really refers to are CPUs for which certain instructions |
| // (which ones besides the example below?) are microcoded. |
| // The best examples of this are the memory forms of CALL and PUSH |
| // instructions, which should be avoided in favor of a MOV + register CALL/PUSH. |
| def FeatureCallRegIndirect : SubtargetFeature<"call-reg-indirect", |
| "CallRegIndirect", "true", |
| "Call register indirect">; |
| def FeatureLEAUsesAG : SubtargetFeature<"lea-uses-ag", "LEAUsesAG", "true", |
| "LEA instruction needs inputs at AG stage">; |
| def FeatureSlowLEA : SubtargetFeature<"slow-lea", "SlowLEA", "true", |
| "LEA instruction with certain arguments is slow">; |
| def FeatureSlow3OpsLEA : SubtargetFeature<"slow-3ops-lea", "Slow3OpsLEA", "true", |
| "LEA instruction with 3 ops or certain registers is slow">; |
| def FeatureSlowIncDec : SubtargetFeature<"slow-incdec", "SlowIncDec", "true", |
| "INC and DEC instructions are slower than ADD and SUB">; |
| def FeatureSoftFloat |
| : SubtargetFeature<"soft-float", "UseSoftFloat", "true", |
| "Use software floating point features.">; |
| // On some X86 processors, there is no performance hazard to writing only the |
| // lower parts of a YMM or ZMM register without clearing the upper part. |
| def FeatureFastPartialYMMorZMMWrite |
| : SubtargetFeature<"fast-partial-ymm-or-zmm-write", |
| "HasFastPartialYMMorZMMWrite", |
| "true", "Partial writes to YMM/ZMM registers are fast">; |
| // FeatureFastScalarFSQRT should be enabled if scalar FSQRT has shorter latency |
| // than the corresponding NR code. FeatureFastVectorFSQRT should be enabled if |
| // vector FSQRT has higher throughput than the corresponding NR code. |
| // The idea is that throughput bound code is likely to be vectorized, so for |
| // vectorized code we should care about the throughput of SQRT operations. |
| // But if the code is scalar that probably means that the code has some kind of |
| // dependency and we should care more about reducing the latency. |
| def FeatureFastScalarFSQRT |
| : SubtargetFeature<"fast-scalar-fsqrt", "HasFastScalarFSQRT", |
| "true", "Scalar SQRT is fast (disable Newton-Raphson)">; |
| def FeatureFastVectorFSQRT |
| : SubtargetFeature<"fast-vector-fsqrt", "HasFastVectorFSQRT", |
| "true", "Vector SQRT is fast (disable Newton-Raphson)">; |
| // If lzcnt has equivalent latency/throughput to most simple integer ops, it can |
| // be used to replace test/set sequences. |
| def FeatureFastLZCNT |
| : SubtargetFeature< |
| "fast-lzcnt", "HasFastLZCNT", "true", |
| "LZCNT instructions are as fast as most simple integer ops">; |
| |
| |
| // Sandy Bridge and newer processors can use SHLD with the same source on both |
| // inputs to implement rotate to avoid the partial flag update of the normal |
| // rotate instructions. |
| def FeatureFastSHLDRotate |
| : SubtargetFeature< |
| "fast-shld-rotate", "HasFastSHLDRotate", "true", |
| "SHLD can be used as a faster rotate">; |
| |
| // Ivy Bridge and newer processors have enhanced REP MOVSB and STOSB (aka |
| // "string operations"). See "REP String Enhancement" in the Intel Software |
| // Development Manual. This feature essentially means that REP MOVSB will copy |
| // using the largest available size instead of copying bytes one by one, making |
| // it at least as fast as REPMOVS{W,D,Q}. |
| def FeatureERMSB |
| : SubtargetFeature< |
| "ermsb", "HasERMSB", "true", |
| "REP MOVS/STOS are fast">; |
| |
| // Enable mitigation of some aspects of speculative execution related |
| // vulnerabilities by removing speculatable indirect branches. This disables |
| // jump-table formation, rewrites explicit `indirectbr` instructions into |
| // `switch` instructions, and uses a special construct called a "retpoline" to |
| // prevent speculation of the remaining indirect branches (indirect calls and |
| // tail calls). |
| def FeatureRetpoline |
| : SubtargetFeature<"retpoline", "UseRetpoline", "true", |
| "Remove speculation of indirect branches from the " |
| "generated code, either by avoiding them entirely or " |
| "lowering them with a speculation blocking construct.">; |
| |
| // Rely on external thunks for the emitted retpoline calls. This allows users |
| // to provide their own custom thunk definitions in highly specialized |
| // environments such as a kernel that does boot-time hot patching. |
| def FeatureRetpolineExternalThunk |
| : SubtargetFeature< |
| "retpoline-external-thunk", "UseRetpolineExternalThunk", "true", |
| "Enable retpoline, but with an externally provided thunk.", |
| [FeatureRetpoline]>; |
| |
| //===----------------------------------------------------------------------===// |
| // X86 processors supported. |
| //===----------------------------------------------------------------------===// |
| |
| include "X86Schedule.td" |
| |
| def ProcIntelAtom : SubtargetFeature<"atom", "X86ProcFamily", "IntelAtom", |
| "Intel Atom processors">; |
| def ProcIntelSLM : SubtargetFeature<"slm", "X86ProcFamily", "IntelSLM", |
| "Intel Silvermont processors">; |
| def ProcIntelGLM : SubtargetFeature<"glm", "X86ProcFamily", "IntelGLM", |
| "Intel Goldmont processors">; |
| |
| class Proc<string Name, list<SubtargetFeature> Features> |
| : ProcessorModel<Name, GenericModel, Features>; |
| |
| def : Proc<"generic", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"i386", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"i486", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"i586", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"pentium", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"pentium-mmx", [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>; |
| def : Proc<"i686", [FeatureX87, FeatureSlowUAMem16]>; |
| def : Proc<"pentiumpro", [FeatureX87, FeatureSlowUAMem16, FeatureCMOV]>; |
| def : Proc<"pentium2", [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureCMOV, FeatureFXSR]>; |
| def : Proc<"pentium3", [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE1, FeatureFXSR]>; |
| def : Proc<"pentium3m", [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE1, FeatureFXSR, FeatureSlowBTMem]>; |
| |
| // Enable the PostRAScheduler for SSE2 and SSE3 class cpus. |
| // The intent is to enable it for pentium4 which is the current default |
| // processor in a vanilla 32-bit clang compilation when no specific |
| // architecture is specified. This generally gives a nice performance |
| // increase on silvermont, with largely neutral behavior on other |
| // contemporary large core processors. |
| // pentium-m, pentium4m, prescott and nocona are included as a preventative |
| // measure to avoid performance surprises, in case clang's default cpu |
| // changes slightly. |
| |
| def : ProcessorModel<"pentium-m", GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE2, FeatureFXSR, FeatureSlowBTMem]>; |
| |
| def : ProcessorModel<"pentium4", GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE2, FeatureFXSR]>; |
| |
| def : ProcessorModel<"pentium4m", GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE2, FeatureFXSR, FeatureSlowBTMem]>; |
| |
| // Intel Quark. |
| def : Proc<"lakemont", []>; |
| |
| // Intel Core Duo. |
| def : ProcessorModel<"yonah", SandyBridgeModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureMMX, FeatureSSE3, |
| FeatureFXSR, FeatureSlowBTMem]>; |
| |
| // NetBurst. |
| def : ProcessorModel<"prescott", GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureMMX, FeatureSSE3, |
| FeatureFXSR, FeatureSlowBTMem]>; |
| def : ProcessorModel<"nocona", GenericPostRAModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureMMX, |
| FeatureSSE3, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureSlowBTMem |
| ]>; |
| |
| // Intel Core 2 Solo/Duo. |
| def : ProcessorModel<"core2", SandyBridgeModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureSlowBTMem, |
| FeatureLAHFSAHF |
| ]>; |
| def : ProcessorModel<"penryn", SandyBridgeModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureMMX, |
| FeatureSSE41, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureSlowBTMem, |
| FeatureLAHFSAHF |
| ]>; |
| |
| // Atom CPUs. |
| class BonnellProc<string Name> : ProcessorModel<Name, AtomModel, [ |
| ProcIntelAtom, |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureMOVBE, |
| FeatureSlowBTMem, |
| FeatureLEAForSP, |
| FeatureSlowDivide32, |
| FeatureSlowDivide64, |
| FeatureCallRegIndirect, |
| FeatureLEAUsesAG, |
| FeaturePadShortFunctions, |
| FeatureLAHFSAHF |
| ]>; |
| def : BonnellProc<"bonnell">; |
| def : BonnellProc<"atom">; // Pin the generic name to the baseline. |
| |
| class SilvermontProc<string Name> : ProcessorModel<Name, SLMModel, [ |
| ProcIntelSLM, |
| FeatureX87, |
| FeatureMMX, |
| FeatureSSE42, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureMOVBE, |
| FeaturePOPCNT, |
| FeaturePCLMUL, |
| FeatureAES, |
| FeatureSlowDivide64, |
| FeatureCallRegIndirect, |
| FeaturePRFCHW, |
| FeatureSlowLEA, |
| FeatureSlowIncDec, |
| FeatureSlowBTMem, |
| FeatureSlowPMULLD, |
| FeatureLAHFSAHF |
| ]>; |
| def : SilvermontProc<"silvermont">; |
| def : SilvermontProc<"slm">; // Legacy alias. |
| |
| class GoldmontProc<string Name> : ProcessorModel<Name, SLMModel, [ |
| ProcIntelGLM, |
| FeatureX87, |
| FeatureMMX, |
| FeatureSSE42, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureMOVBE, |
| FeaturePOPCNT, |
| FeaturePCLMUL, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeatureCallRegIndirect, |
| FeatureSlowLEA, |
| FeatureSlowIncDec, |
| FeatureSlowBTMem, |
| FeatureLAHFSAHF, |
| FeatureMPX, |
| FeatureSHA, |
| FeatureRDRAND, |
| FeatureRDSEED, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureXSAVEC, |
| FeatureXSAVES, |
| FeatureCLFLUSHOPT |
| ]>; |
| def : GoldmontProc<"goldmont">; |
| |
| // "Arrandale" along with corei3 and corei5 |
| class NehalemProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureSSE42, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureSlowBTMem, |
| FeaturePOPCNT, |
| FeatureLAHFSAHF |
| ]>; |
| def : NehalemProc<"nehalem">; |
| def : NehalemProc<"corei7">; |
| |
| // Westmere is a similar machine to nehalem with some additional features. |
| // Westmere is the corei3/i5/i7 path from nehalem to sandybridge |
| class WestmereProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureSSE42, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeatureSlowBTMem, |
| FeaturePOPCNT, |
| FeatureAES, |
| FeaturePCLMUL, |
| FeatureLAHFSAHF |
| ]>; |
| def : WestmereProc<"westmere">; |
| |
| class ProcessorFeatures<list<SubtargetFeature> Inherited, |
| list<SubtargetFeature> NewFeatures> { |
| list<SubtargetFeature> Value = !listconcat(Inherited, NewFeatures); |
| } |
| |
| class ProcModel<string Name, SchedMachineModel Model, |
| list<SubtargetFeature> ProcFeatures, |
| list<SubtargetFeature> OtherFeatures> : |
| ProcessorModel<Name, Model, !listconcat(ProcFeatures, OtherFeatures)>; |
| |
| // SSE is not listed here since llvm treats AVX as a reimplementation of SSE, |
| // rather than a superset. |
| def SNBFeatures : ProcessorFeatures<[], [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureAVX, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeaturePOPCNT, |
| FeatureAES, |
| FeatureSlowDivide64, |
| FeaturePCLMUL, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureLAHFSAHF, |
| FeatureSlow3OpsLEA, |
| FeatureFastScalarFSQRT, |
| FeatureFastSHLDRotate |
| ]>; |
| |
| class SandyBridgeProc<string Name> : ProcModel<Name, SandyBridgeModel, |
| SNBFeatures.Value, [ |
| FeatureSlowBTMem, |
| FeatureSlowUAMem32 |
| ]>; |
| def : SandyBridgeProc<"sandybridge">; |
| def : SandyBridgeProc<"corei7-avx">; // Legacy alias. |
| |
| def IVBFeatures : ProcessorFeatures<SNBFeatures.Value, [ |
| FeatureRDRAND, |
| FeatureF16C, |
| FeatureFSGSBase |
| ]>; |
| |
| class IvyBridgeProc<string Name> : ProcModel<Name, SandyBridgeModel, |
| IVBFeatures.Value, [ |
| FeatureSlowBTMem, |
| FeatureSlowUAMem32 |
| ]>; |
| def : IvyBridgeProc<"ivybridge">; |
| def : IvyBridgeProc<"core-avx-i">; // Legacy alias. |
| |
| def HSWFeatures : ProcessorFeatures<IVBFeatures.Value, [ |
| FeatureAVX2, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureERMSB, |
| FeatureFMA, |
| FeatureLZCNT, |
| FeatureMOVBE, |
| FeatureSlowIncDec |
| ]>; |
| |
| class HaswellProc<string Name> : ProcModel<Name, HaswellModel, |
| HSWFeatures.Value, []>; |
| def : HaswellProc<"haswell">; |
| def : HaswellProc<"core-avx2">; // Legacy alias. |
| |
| def BDWFeatures : ProcessorFeatures<HSWFeatures.Value, [ |
| FeatureADX, |
| FeatureRDSEED |
| ]>; |
| class BroadwellProc<string Name> : ProcModel<Name, HaswellModel, |
| BDWFeatures.Value, []>; |
| def : BroadwellProc<"broadwell">; |
| |
| def SKLFeatures : ProcessorFeatures<BDWFeatures.Value, [ |
| FeatureMPX, |
| FeatureRTM, |
| FeatureXSAVEC, |
| FeatureXSAVES, |
| FeatureSGX, |
| FeatureCLFLUSHOPT, |
| FeatureFastVectorFSQRT |
| ]>; |
| |
| // FIXME: define SKL model |
| class SkylakeClientProc<string Name> : ProcModel<Name, HaswellModel, |
| SKLFeatures.Value, []>; |
| def : SkylakeClientProc<"skylake">; |
| |
| // FIXME: define KNL model |
| class KnightsLandingProc<string Name> : ProcModel<Name, HaswellModel, |
| IVBFeatures.Value, [ |
| FeatureAVX512, |
| FeatureERI, |
| FeatureCDI, |
| FeaturePFI, |
| FeaturePREFETCHWT1, |
| FeatureADX, |
| FeatureRDSEED, |
| FeatureMOVBE, |
| FeatureLZCNT, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureFMA, |
| FeatureFastPartialYMMorZMMWrite |
| ]>; |
| def : KnightsLandingProc<"knl">; |
| |
| def SKXFeatures : ProcessorFeatures<SKLFeatures.Value, [ |
| FeatureAVX512, |
| FeatureCDI, |
| FeatureDQI, |
| FeatureBWI, |
| FeatureVLX, |
| FeaturePKU, |
| FeatureCLWB |
| ]>; |
| |
| // FIXME: define SKX model |
| class SkylakeServerProc<string Name> : ProcModel<Name, HaswellModel, |
| SKXFeatures.Value, []>; |
| def : SkylakeServerProc<"skylake-avx512">; |
| def : SkylakeServerProc<"skx">; // Legacy alias. |
| |
| def CNLFeatures : ProcessorFeatures<SKXFeatures.Value, [ |
| FeatureVBMI, |
| FeatureIFMA, |
| FeatureSHA |
| ]>; |
| |
| class CannonlakeProc<string Name> : ProcModel<Name, HaswellModel, |
| CNLFeatures.Value, []>; |
| def : CannonlakeProc<"cannonlake">; |
| |
| // AMD CPUs. |
| |
| def : Proc<"k6", [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>; |
| def : Proc<"k6-2", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>; |
| def : Proc<"k6-3", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>; |
| def : Proc<"athlon", [FeatureX87, FeatureSlowUAMem16, Feature3DNowA, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"athlon-tbird", [FeatureX87, FeatureSlowUAMem16, Feature3DNowA, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"athlon-4", [FeatureX87, FeatureSlowUAMem16, FeatureSSE1, |
| Feature3DNowA, FeatureFXSR, FeatureSlowBTMem, |
| FeatureSlowSHLD]>; |
| def : Proc<"athlon-xp", [FeatureX87, FeatureSlowUAMem16, FeatureSSE1, |
| Feature3DNowA, FeatureFXSR, FeatureSlowBTMem, |
| FeatureSlowSHLD]>; |
| def : Proc<"athlon-mp", [FeatureX87, FeatureSlowUAMem16, FeatureSSE1, |
| Feature3DNowA, FeatureFXSR, FeatureSlowBTMem, |
| FeatureSlowSHLD]>; |
| def : Proc<"k8", [FeatureX87, FeatureSlowUAMem16, FeatureSSE2, |
| Feature3DNowA, FeatureFXSR, Feature64Bit, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"opteron", [FeatureX87, FeatureSlowUAMem16, FeatureSSE2, |
| Feature3DNowA, FeatureFXSR, Feature64Bit, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"athlon64", [FeatureX87, FeatureSlowUAMem16, FeatureSSE2, |
| Feature3DNowA, FeatureFXSR, Feature64Bit, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"athlon-fx", [FeatureX87, FeatureSlowUAMem16, FeatureSSE2, |
| Feature3DNowA, FeatureFXSR, Feature64Bit, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"k8-sse3", [FeatureX87, FeatureSlowUAMem16, FeatureSSE3, |
| Feature3DNowA, FeatureFXSR, FeatureCMPXCHG16B, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"opteron-sse3", [FeatureX87, FeatureSlowUAMem16, FeatureSSE3, |
| Feature3DNowA, FeatureFXSR, FeatureCMPXCHG16B, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"athlon64-sse3", [FeatureX87, FeatureSlowUAMem16, FeatureSSE3, |
| Feature3DNowA, FeatureFXSR, FeatureCMPXCHG16B, |
| FeatureSlowBTMem, FeatureSlowSHLD]>; |
| def : Proc<"amdfam10", [FeatureX87, FeatureSSE4A, Feature3DNowA, |
| FeatureFXSR, FeatureCMPXCHG16B, FeatureLZCNT, |
| FeaturePOPCNT, FeatureSlowBTMem, FeatureSlowSHLD, |
| FeatureLAHFSAHF]>; |
| def : Proc<"barcelona", [FeatureX87, FeatureSSE4A, Feature3DNowA, |
| FeatureFXSR, FeatureCMPXCHG16B, FeatureLZCNT, |
| FeaturePOPCNT, FeatureSlowBTMem, FeatureSlowSHLD, |
| FeatureLAHFSAHF]>; |
| |
| // Bobcat |
| def : Proc<"btver1", [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureSSE4A, |
| FeatureFXSR, |
| FeatureCMPXCHG16B, |
| FeaturePRFCHW, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF |
| ]>; |
| |
| // Jaguar |
| def : ProcessorModel<"btver2", BtVer2Model, [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureAVX, |
| FeatureFXSR, |
| FeatureSSE4A, |
| FeatureCMPXCHG16B, |
| FeaturePRFCHW, |
| FeatureAES, |
| FeaturePCLMUL, |
| FeatureBMI, |
| FeatureF16C, |
| FeatureMOVBE, |
| FeatureLZCNT, |
| FeatureFastLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF, |
| FeatureFastPartialYMMorZMMWrite |
| ]>; |
| |
| // Bulldozer |
| def : Proc<"bdver1", [ |
| FeatureX87, |
| FeatureXOP, |
| FeatureFMA4, |
| FeatureCMPXCHG16B, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeaturePCLMUL, |
| FeatureMMX, |
| FeatureAVX, |
| FeatureFXSR, |
| FeatureSSE4A, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureLWP, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF |
| ]>; |
| // Piledriver |
| def : Proc<"bdver2", [ |
| FeatureX87, |
| FeatureXOP, |
| FeatureFMA4, |
| FeatureCMPXCHG16B, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeaturePCLMUL, |
| FeatureMMX, |
| FeatureAVX, |
| FeatureFXSR, |
| FeatureSSE4A, |
| FeatureF16C, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureBMI, |
| FeatureTBM, |
| FeatureLWP, |
| FeatureFMA, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF |
| ]>; |
| |
| // Steamroller |
| def : Proc<"bdver3", [ |
| FeatureX87, |
| FeatureXOP, |
| FeatureFMA4, |
| FeatureCMPXCHG16B, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeaturePCLMUL, |
| FeatureMMX, |
| FeatureAVX, |
| FeatureFXSR, |
| FeatureSSE4A, |
| FeatureF16C, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureBMI, |
| FeatureTBM, |
| FeatureLWP, |
| FeatureFMA, |
| FeatureXSAVEOPT, |
| FeatureSlowSHLD, |
| FeatureFSGSBase, |
| FeatureLAHFSAHF |
| ]>; |
| |
| // Excavator |
| def : Proc<"bdver4", [ |
| FeatureX87, |
| FeatureMMX, |
| FeatureAVX2, |
| FeatureFXSR, |
| FeatureXOP, |
| FeatureFMA4, |
| FeatureCMPXCHG16B, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeaturePCLMUL, |
| FeatureF16C, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureTBM, |
| FeatureLWP, |
| FeatureFMA, |
| FeatureXSAVEOPT, |
| FeatureSlowSHLD, |
| FeatureFSGSBase, |
| FeatureLAHFSAHF, |
| FeatureMWAITX |
| ]>; |
| |
| // Znver1 |
| def: ProcessorModel<"znver1", Znver1Model, [ |
| FeatureADX, |
| FeatureAES, |
| FeatureAVX2, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureCLFLUSHOPT, |
| FeatureCLZERO, |
| FeatureCMPXCHG16B, |
| FeatureF16C, |
| FeatureFMA, |
| FeatureFSGSBase, |
| FeatureFXSR, |
| FeatureFastLZCNT, |
| FeatureLAHFSAHF, |
| FeatureLZCNT, |
| FeatureMMX, |
| FeatureMOVBE, |
| FeatureMWAITX, |
| FeaturePCLMUL, |
| FeaturePOPCNT, |
| FeaturePRFCHW, |
| FeatureRDRAND, |
| FeatureRDSEED, |
| FeatureSHA, |
| FeatureSSE4A, |
| FeatureSlowSHLD, |
| FeatureX87, |
| FeatureXSAVE, |
| FeatureXSAVEC, |
| FeatureXSAVEOPT, |
| FeatureXSAVES]>; |
| |
| def : Proc<"geode", [FeatureX87, FeatureSlowUAMem16, Feature3DNowA]>; |
| |
| def : Proc<"winchip-c6", [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>; |
| def : Proc<"winchip2", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>; |
| def : Proc<"c3", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>; |
| def : Proc<"c3-2", [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureSSE1, FeatureFXSR]>; |
| |
| // We also provide a generic 64-bit specific x86 processor model which tries to |
| // be good for modern chips without enabling instruction set encodings past the |
| // basic SSE2 and 64-bit ones. It disables slow things from any mainstream and |
| // modern 64-bit x86 chip, and enables features that are generally beneficial. |
| // |
| // We currently use the Sandy Bridge model as the default scheduling model as |
| // we use it across Nehalem, Westmere, Sandy Bridge, and Ivy Bridge which |
| // covers a huge swath of x86 processors. If there are specific scheduling |
| // knobs which need to be tuned differently for AMD chips, we might consider |
| // forming a common base for them. |
| def : ProcessorModel<"x86-64", SandyBridgeModel, |
| [FeatureX87, FeatureMMX, FeatureSSE2, FeatureFXSR, |
| Feature64Bit, FeatureSlowBTMem ]>; |
| |
| //===----------------------------------------------------------------------===// |
| // Register File Description |
| //===----------------------------------------------------------------------===// |
| |
| include "X86RegisterInfo.td" |
| include "X86RegisterBanks.td" |
| |
| //===----------------------------------------------------------------------===// |
| // Instruction Descriptions |
| //===----------------------------------------------------------------------===// |
| |
| include "X86InstrInfo.td" |
| |
| def X86InstrInfo : InstrInfo; |
| |
| //===----------------------------------------------------------------------===// |
| // Calling Conventions |
| //===----------------------------------------------------------------------===// |
| |
| include "X86CallingConv.td" |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Assembly Parser |
| //===----------------------------------------------------------------------===// |
| |
| def ATTAsmParserVariant : AsmParserVariant { |
| int Variant = 0; |
| |
| // Variant name. |
| string Name = "att"; |
| |
| // Discard comments in assembly strings. |
| string CommentDelimiter = "#"; |
| |
| // Recognize hard coded registers. |
| string RegisterPrefix = "%"; |
| } |
| |
| def IntelAsmParserVariant : AsmParserVariant { |
| int Variant = 1; |
| |
| // Variant name. |
| string Name = "intel"; |
| |
| // Discard comments in assembly strings. |
| string CommentDelimiter = ";"; |
| |
| // Recognize hard coded registers. |
| string RegisterPrefix = ""; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Assembly Printers |
| //===----------------------------------------------------------------------===// |
| |
| // The X86 target supports two different syntaxes for emitting machine code. |
| // This is controlled by the -x86-asm-syntax={att|intel} |
| def ATTAsmWriter : AsmWriter { |
| string AsmWriterClassName = "ATTInstPrinter"; |
| int Variant = 0; |
| } |
| def IntelAsmWriter : AsmWriter { |
| string AsmWriterClassName = "IntelInstPrinter"; |
| int Variant = 1; |
| } |
| |
| def X86 : Target { |
| // Information about the instructions... |
| let InstructionSet = X86InstrInfo; |
| let AssemblyParserVariants = [ATTAsmParserVariant, IntelAsmParserVariant]; |
| let AssemblyWriters = [ATTAsmWriter, IntelAsmWriter]; |
| } |
