| //===-- X86.td - Target definition file for the Intel X86 --*- tablegen -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 FeatureNOPL : SubtargetFeature<"nopl", "HasNOPL", "true", |
| "Enable NOPL instruction">; |
| |
| def FeatureCMOV : SubtargetFeature<"cmov","HasCMov", "true", |
| "Enable conditional move instructions">; |
| |
| def FeatureCMPXCHG8B : SubtargetFeature<"cx8", "HasCmpxchg8b", "true", |
| "Support CMPXCHG8B 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", |
| [FeatureXSAVE]>; |
| |
| def FeatureXSAVEC : SubtargetFeature<"xsavec", "HasXSAVEC", "true", |
| "Support xsavec instructions", |
| [FeatureXSAVE]>; |
| |
| def FeatureXSAVES : SubtargetFeature<"xsaves", "HasXSAVES", "true", |
| "Support xsaves instructions", |
| [FeatureXSAVE]>; |
| |
| def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1", |
| "Enable SSE instructions">; |
| 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. Nothing should imply this feature bit. It |
| // is used to enforce that only 64-bit capable CPUs are used in 64-bit mode. |
| def Feature64Bit : SubtargetFeature<"64bit", "HasX86_64", "true", |
| "Support 64-bit instructions">; |
| def FeatureCMPXCHG16B : SubtargetFeature<"cx16", "HasCmpxchg16b", "true", |
| "64-bit with cmpxchg16b", |
| [FeatureCMPXCHG8B]>; |
| def FeatureSlowSHLD : SubtargetFeature<"slow-shld", "IsSHLDSlow", "true", |
| "SHLD instruction is slow">; |
| def FeatureSlowPMULLD : SubtargetFeature<"slow-pmulld", "IsPMULLDSlow", "true", |
| "PMULLD instruction is slow">; |
| def FeatureSlowPMADDWD : SubtargetFeature<"slow-pmaddwd", "IsPMADDWDSlow", |
| "true", |
| "PMADDWD is slower than PMULLD">; |
| // 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 FeatureFMA : SubtargetFeature<"fma", "HasFMA", "true", |
| "Enable three-operand fused multiple-add", |
| [FeatureAVX]>; |
| def FeatureF16C : SubtargetFeature<"f16c", "HasF16C", "true", |
| "Support 16-bit floating point conversion instructions", |
| [FeatureAVX]>; |
| def FeatureAVX512 : SubtargetFeature<"avx512f", "X86SSELevel", "AVX512F", |
| "Enable AVX-512 instructions", |
| [FeatureAVX2, FeatureFMA, FeatureF16C]>; |
| 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", "HasPREFETCHWT1", |
| "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 FeatureVBMI2 : SubtargetFeature<"avx512vbmi2", "HasVBMI2", "true", |
| "Enable AVX-512 further 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 FeatureVNNI : SubtargetFeature<"avx512vnni", "HasVNNI", "true", |
| "Enable AVX-512 Vector Neural Network Instructions", |
| [FeatureAVX512]>; |
| def FeatureBF16 : SubtargetFeature<"avx512bf16", "HasBF16", "true", |
| "Support bfloat16 floating point", |
| [FeatureBWI]>; |
| def FeatureBITALG : SubtargetFeature<"avx512bitalg", "HasBITALG", "true", |
| "Enable AVX-512 Bit Algorithms", |
| [FeatureBWI]>; |
| def FeatureVP2INTERSECT : SubtargetFeature<"avx512vp2intersect", |
| "HasVP2INTERSECT", "true", |
| "Enable AVX-512 vp2intersect", |
| [FeatureAVX512]>; |
| def FeaturePCLMUL : SubtargetFeature<"pclmul", "HasPCLMUL", "true", |
| "Enable packed carry-less multiplication instructions", |
| [FeatureSSE2]>; |
| def FeatureGFNI : SubtargetFeature<"gfni", "HasGFNI", "true", |
| "Enable Galois Field Arithmetic Instructions", |
| [FeatureSSE2]>; |
| def FeatureVPCLMULQDQ : SubtargetFeature<"vpclmulqdq", "HasVPCLMULQDQ", "true", |
| "Enable vpclmulqdq instructions", |
| [FeatureAVX, FeaturePCLMUL]>; |
| 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 FeatureVAES : SubtargetFeature<"vaes", "HasVAES", "true", |
| "Promote selected AES instructions to AVX512/AVX registers", |
| [FeatureAVX, FeatureAES]>; |
| 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 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 FeatureSHSTK : SubtargetFeature<"shstk", "HasSHSTK", "true", |
| "Support CET Shadow-Stack instructions">; |
| 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 FeatureCLDEMOTE : SubtargetFeature<"cldemote", "HasCLDEMOTE", "true", |
| "Enable Cache Demote">; |
| def FeaturePTWRITE : SubtargetFeature<"ptwrite", "HasPTWRITE", "true", |
| "Support ptwrite instruction">; |
| // FIXME: This feature is deprecated in 10.0 and should not be used for |
| // anything, but removing it would break IR files that may contain it in a |
| // target-feature attribute. |
| def FeatureDeprecatedMPX : SubtargetFeature<"mpx", "DeprecatedHasMPX", "false", |
| "Deprecated. Support MPX instructions">; |
| def FeatureAMXTILE : SubtargetFeature<"amx-tile", "HasAMXTILE", "true", |
| "Support AMX-TILE instructions">; |
| def FeatureAMXINT8 : SubtargetFeature<"amx-int8", "HasAMXINT8", "true", |
| "Support AMX-INT8 instructions", |
| [FeatureAMXTILE]>; |
| def FeatureAMXBF16 : SubtargetFeature<"amx-bf16", "HasAMXBF16", "true", |
| "Support AMX-BF16 instructions", |
| [FeatureAMXTILE]>; |
| 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 FeatureINVPCID : SubtargetFeature<"invpcid", "HasINVPCID", "true", |
| "Invalidate Process-Context Identifier">; |
| 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">; |
| def FeatureWBNOINVD : SubtargetFeature<"wbnoinvd", "HasWBNOINVD", "true", |
| "Write Back No Invalidate">; |
| def FeatureRDPID : SubtargetFeature<"rdpid", "HasRDPID", "true", |
| "Support RDPID instructions">; |
| def FeatureWAITPKG : SubtargetFeature<"waitpkg", "HasWAITPKG", "true", |
| "Wait and pause enhancements">; |
| def FeatureENQCMD : SubtargetFeature<"enqcmd", "HasENQCMD", "true", |
| "Has ENQCMD instructions">; |
| def FeatureSERIALIZE : SubtargetFeature<"serialize", "HasSERIALIZE", "true", |
| "Has serialize instruction">; |
| def FeatureTSXLDTRK : SubtargetFeature<"tsxldtrk", "HasTSXLDTRK", "true", |
| "Support TSXLDTRK instructions">; |
| // On some processors, instructions that implicitly take two memory operands are |
| // slow. In practice, this means that CALL, PUSH, and POP with memory operands |
| // should be avoided in favor of a MOV + register CALL/PUSH/POP. |
| def FeatureSlowTwoMemOps : SubtargetFeature<"slow-two-mem-ops", |
| "SlowTwoMemOps", "true", |
| "Two memory operand instructions are slow">; |
| 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">; |
| def FeaturePOPCNTFalseDeps : SubtargetFeature<"false-deps-popcnt", |
| "HasPOPCNTFalseDeps", "true", |
| "POPCNT has a false dependency on dest register">; |
| def FeatureLZCNTFalseDeps : SubtargetFeature<"false-deps-lzcnt-tzcnt", |
| "HasLZCNTFalseDeps", "true", |
| "LZCNT/TZCNT have a false dependency on dest register">; |
| def FeaturePCONFIG : SubtargetFeature<"pconfig", "HasPCONFIG", "true", |
| "platform configuration instruction">; |
| // On recent X86 (port bound) processors, its preferable to combine to a single shuffle |
| // using a variable mask over multiple fixed shuffles. |
| def FeatureFastVariableShuffle |
| : SubtargetFeature<"fast-variable-shuffle", |
| "HasFastVariableShuffle", |
| "true", "Shuffles with variable masks are fast">; |
| // On some X86 processors, a vzeroupper instruction should be inserted after |
| // using ymm/zmm registers before executing code that may use SSE instructions. |
| def FeatureInsertVZEROUPPER |
| : SubtargetFeature<"vzeroupper", |
| "InsertVZEROUPPER", |
| "true", "Should insert vzeroupper instructions">; |
| // 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">; |
| // If the target can efficiently decode NOPs upto 7-bytes in length. |
| def FeatureFast7ByteNOP |
| : SubtargetFeature< |
| "fast-7bytenop", "HasFast7ByteNOP", "true", |
| "Target can quickly decode up to 7 byte NOPs">; |
| // If the target can efficiently decode NOPs upto 11-bytes in length. |
| def FeatureFast11ByteNOP |
| : SubtargetFeature< |
| "fast-11bytenop", "HasFast11ByteNOP", "true", |
| "Target can quickly decode up to 11 byte NOPs">; |
| // If the target can efficiently decode NOPs upto 15-bytes in length. |
| def FeatureFast15ByteNOP |
| : SubtargetFeature< |
| "fast-15bytenop", "HasFast15ByteNOP", "true", |
| "Target can quickly decode up to 15 byte NOPs">; |
| // 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">; |
| |
| // Bulldozer and newer processors can merge CMP/TEST (but not other |
| // instructions) with conditional branches. |
| def FeatureBranchFusion |
| : SubtargetFeature<"branchfusion", "HasBranchFusion", "true", |
| "CMP/TEST can be fused with conditional branches">; |
| |
| // Sandy Bridge and newer processors have many instructions that can be |
| // fused with conditional branches and pass through the CPU as a single |
| // operation. |
| def FeatureMacroFusion |
| : SubtargetFeature<"macrofusion", "HasMacroFusion", "true", |
| "Various instructions can be fused with conditional branches">; |
| |
| // Gather is available since Haswell (AVX2 set). So technically, we can |
| // generate Gathers on all AVX2 processors. But the overhead on HSW is high. |
| // Skylake Client processor has faster Gathers than HSW and performance is |
| // similar to Skylake Server (AVX-512). |
| def FeatureHasFastGather |
| : SubtargetFeature<"fast-gather", "HasFastGather", "true", |
| "Indicates if gather is reasonably fast">; |
| |
| def FeaturePrefer128Bit |
| : SubtargetFeature<"prefer-128-bit", "Prefer128Bit", "true", |
| "Prefer 128-bit AVX instructions">; |
| |
| def FeaturePrefer256Bit |
| : SubtargetFeature<"prefer-256-bit", "Prefer256Bit", "true", |
| "Prefer 256-bit AVX instructions">; |
| |
| def FeaturePreferMaskRegisters |
| : SubtargetFeature<"prefer-mask-registers", "PreferMaskRegisters", "true", |
| "Prefer AVX512 mask registers over PTEST/MOVMSK">; |
| |
| // Lower indirect calls using a special construct called a `retpoline` to |
| // mitigate potential Spectre v2 attacks against them. |
| def FeatureRetpolineIndirectCalls |
| : SubtargetFeature< |
| "retpoline-indirect-calls", "UseRetpolineIndirectCalls", "true", |
| "Remove speculation of indirect calls from the generated code">; |
| |
| // Lower indirect branches and switches either using conditional branch trees |
| // or using a special construct called a `retpoline` to mitigate potential |
| // Spectre v2 attacks against them. |
| def FeatureRetpolineIndirectBranches |
| : SubtargetFeature< |
| "retpoline-indirect-branches", "UseRetpolineIndirectBranches", "true", |
| "Remove speculation of indirect branches from the generated code">; |
| |
| // Deprecated umbrella feature for enabling both `retpoline-indirect-calls` and |
| // `retpoline-indirect-branches` above. |
| def FeatureRetpoline |
| : SubtargetFeature<"retpoline", "DeprecatedUseRetpoline", "true", |
| "Remove speculation of indirect branches from the " |
| "generated code, either by avoiding them entirely or " |
| "lowering them with a speculation blocking construct", |
| [FeatureRetpolineIndirectCalls, |
| FeatureRetpolineIndirectBranches]>; |
| |
| // 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", |
| "When lowering an indirect call or branch using a `retpoline`, rely " |
| "on the specified user provided thunk rather than emitting one " |
| "ourselves. Only has effect when combined with some other retpoline " |
| "feature", [FeatureRetpolineIndirectCalls]>; |
| |
| // Mitigate LVI attacks against indirect calls/branches and call returns |
| def FeatureLVIControlFlowIntegrity |
| : SubtargetFeature< |
| "lvi-cfi", "UseLVIControlFlowIntegrity", "true", |
| "Prevent indirect calls/branches from using a memory operand, and " |
| "precede all indirect calls/branches from a register with an " |
| "LFENCE instruction to serialize control flow. Also decompose RET " |
| "instructions into a POP+LFENCE+JMP sequence.">; |
| |
| // Enable SESES to mitigate speculative execution attacks |
| def FeatureSpeculativeExecutionSideEffectSuppression |
| : SubtargetFeature< |
| "seses", "UseSpeculativeExecutionSideEffectSuppression", "true", |
| "Prevent speculative execution side channel timing attacks by " |
| "inserting a speculation barrier before memory reads, memory writes, " |
| "and conditional branches. Implies LVI Control Flow integrity.", |
| [FeatureLVIControlFlowIntegrity]>; |
| |
| // Mitigate LVI attacks against data loads |
| def FeatureLVILoadHardening |
| : SubtargetFeature< |
| "lvi-load-hardening", "UseLVILoadHardening", "true", |
| "Insert LFENCE instructions to prevent data speculatively injected " |
| "into loads from being used maliciously.">; |
| |
| // Direct Move instructions. |
| def FeatureMOVDIRI : SubtargetFeature<"movdiri", "HasMOVDIRI", "true", |
| "Support movdiri instruction">; |
| def FeatureMOVDIR64B : SubtargetFeature<"movdir64b", "HasMOVDIR64B", "true", |
| "Support movdir64b instruction">; |
| |
| def FeatureFastBEXTR : SubtargetFeature<"fast-bextr", "HasFastBEXTR", "true", |
| "Indicates that the BEXTR instruction is implemented as a single uop " |
| "with good throughput">; |
| |
| // Combine vector math operations with shuffles into horizontal math |
| // instructions if a CPU implements horizontal operations (introduced with |
| // SSE3) with better latency/throughput than the alternative sequence. |
| def FeatureFastHorizontalOps |
| : SubtargetFeature< |
| "fast-hops", "HasFastHorizontalOps", "true", |
| "Prefer horizontal vector math instructions (haddp, phsub, etc.) over " |
| "normal vector instructions with shuffles">; |
| |
| def FeatureFastScalarShiftMasks |
| : SubtargetFeature< |
| "fast-scalar-shift-masks", "HasFastScalarShiftMasks", "true", |
| "Prefer a left/right scalar logical shift pair over a shift+and pair">; |
| |
| def FeatureFastVectorShiftMasks |
| : SubtargetFeature< |
| "fast-vector-shift-masks", "HasFastVectorShiftMasks", "true", |
| "Prefer a left/right vector logical shift pair over a shift+and pair">; |
| |
| def FeatureUseGLMDivSqrtCosts |
| : SubtargetFeature<"use-glm-div-sqrt-costs", "UseGLMDivSqrtCosts", "true", |
| "Use Goldmont specific floating point div/sqrt costs">; |
| |
| // Merge branches using three-way conditional code. |
| def FeatureMergeToThreeWayBranch : SubtargetFeature<"merge-to-threeway-branch", |
| "ThreewayBranchProfitable", "true", |
| "Merge branches to a three-way " |
| "conditional branch">; |
| |
| // Enable use of alias analysis during code generation. |
| def FeatureUseAA : SubtargetFeature<"use-aa", "UseAA", "true", |
| "Use alias analysis during codegen">; |
| |
| // Bonnell |
| def ProcIntelAtom : SubtargetFeature<"", "X86ProcFamily", "IntelAtom", "">; |
| // Silvermont |
| def ProcIntelSLM : SubtargetFeature<"", "X86ProcFamily", "IntelSLM", "">; |
| |
| //===----------------------------------------------------------------------===// |
| // Register File Description |
| //===----------------------------------------------------------------------===// |
| |
| include "X86RegisterInfo.td" |
| include "X86RegisterBanks.td" |
| |
| //===----------------------------------------------------------------------===// |
| // Instruction Descriptions |
| //===----------------------------------------------------------------------===// |
| |
| include "X86Schedule.td" |
| include "X86InstrInfo.td" |
| include "X86SchedPredicates.td" |
| |
| def X86InstrInfo : InstrInfo; |
| |
| //===----------------------------------------------------------------------===// |
| // X86 Scheduler Models |
| //===----------------------------------------------------------------------===// |
| |
| include "X86ScheduleAtom.td" |
| include "X86SchedSandyBridge.td" |
| include "X86SchedHaswell.td" |
| include "X86SchedBroadwell.td" |
| include "X86ScheduleSLM.td" |
| include "X86ScheduleZnver1.td" |
| include "X86ScheduleZnver2.td" |
| include "X86ScheduleBdVer2.td" |
| include "X86ScheduleBtVer2.td" |
| include "X86SchedSkylakeClient.td" |
| include "X86SchedSkylakeServer.td" |
| |
| //===----------------------------------------------------------------------===// |
| // X86 Processor Feature Lists |
| //===----------------------------------------------------------------------===// |
| |
| def ProcessorFeatures { |
| // Nehalem |
| list<SubtargetFeature> NHMInheritableFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSE42, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeaturePOPCNT, |
| FeatureLAHFSAHF, |
| FeatureMacroFusion, |
| FeatureInsertVZEROUPPER]; |
| list<SubtargetFeature> NHMSpecificFeatures = []; |
| list<SubtargetFeature> NHMFeatures = |
| !listconcat(NHMInheritableFeatures, NHMSpecificFeatures); |
| |
| // Westmere |
| list<SubtargetFeature> WSMAdditionalFeatures = [FeaturePCLMUL]; |
| list<SubtargetFeature> WSMSpecificFeatures = []; |
| list<SubtargetFeature> WSMInheritableFeatures = |
| !listconcat(NHMInheritableFeatures, WSMAdditionalFeatures); |
| list<SubtargetFeature> WSMFeatures = |
| !listconcat(WSMInheritableFeatures, WSMSpecificFeatures); |
| |
| // Sandybridge |
| list<SubtargetFeature> SNBAdditionalFeatures = [FeatureAVX, |
| FeatureSlowDivide64, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureSlow3OpsLEA, |
| FeatureFastScalarFSQRT, |
| FeatureFastSHLDRotate, |
| FeatureMergeToThreeWayBranch, |
| FeatureFast15ByteNOP]; |
| list<SubtargetFeature> SNBSpecificFeatures = [FeatureSlowUAMem32, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> SNBInheritableFeatures = |
| !listconcat(WSMInheritableFeatures, SNBAdditionalFeatures); |
| list<SubtargetFeature> SNBFeatures = |
| !listconcat(SNBInheritableFeatures, SNBSpecificFeatures); |
| |
| // Ivybridge |
| list<SubtargetFeature> IVBAdditionalFeatures = [FeatureRDRAND, |
| FeatureF16C, |
| FeatureFSGSBase]; |
| list<SubtargetFeature> IVBSpecificFeatures = [FeatureSlowUAMem32, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> IVBInheritableFeatures = |
| !listconcat(SNBInheritableFeatures, IVBAdditionalFeatures); |
| list<SubtargetFeature> IVBFeatures = |
| !listconcat(IVBInheritableFeatures, IVBSpecificFeatures); |
| |
| // Haswell |
| list<SubtargetFeature> HSWAdditionalFeatures = [FeatureAVX2, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureERMSB, |
| FeatureFMA, |
| FeatureINVPCID, |
| FeatureLZCNT, |
| FeatureMOVBE, |
| FeatureFastVariableShuffle]; |
| list<SubtargetFeature> HSWSpecificFeatures = [FeaturePOPCNTFalseDeps, |
| FeatureLZCNTFalseDeps]; |
| list<SubtargetFeature> HSWInheritableFeatures = |
| !listconcat(IVBInheritableFeatures, HSWAdditionalFeatures); |
| list<SubtargetFeature> HSWFeatures = |
| !listconcat(HSWInheritableFeatures, HSWSpecificFeatures); |
| |
| // Broadwell |
| list<SubtargetFeature> BDWAdditionalFeatures = [FeatureADX, |
| FeatureRDSEED, |
| FeaturePRFCHW]; |
| list<SubtargetFeature> BDWSpecificFeatures = [FeaturePOPCNTFalseDeps, |
| FeatureLZCNTFalseDeps]; |
| list<SubtargetFeature> BDWInheritableFeatures = |
| !listconcat(HSWInheritableFeatures, BDWAdditionalFeatures); |
| list<SubtargetFeature> BDWFeatures = |
| !listconcat(BDWInheritableFeatures, BDWSpecificFeatures); |
| |
| // Skylake |
| list<SubtargetFeature> SKLAdditionalFeatures = [FeatureAES, |
| FeatureXSAVEC, |
| FeatureXSAVES, |
| FeatureCLFLUSHOPT, |
| FeatureFastVectorFSQRT]; |
| list<SubtargetFeature> SKLSpecificFeatures = [FeatureHasFastGather, |
| FeaturePOPCNTFalseDeps, |
| FeatureSGX]; |
| list<SubtargetFeature> SKLInheritableFeatures = |
| !listconcat(BDWInheritableFeatures, SKLAdditionalFeatures); |
| list<SubtargetFeature> SKLFeatures = |
| !listconcat(SKLInheritableFeatures, SKLSpecificFeatures); |
| |
| // Skylake-AVX512 |
| list<SubtargetFeature> SKXAdditionalFeatures = [FeatureAVX512, |
| FeaturePrefer256Bit, |
| FeatureCDI, |
| FeatureDQI, |
| FeatureBWI, |
| FeatureVLX, |
| FeaturePKU, |
| FeatureCLWB]; |
| list<SubtargetFeature> SKXSpecificFeatures = [FeatureHasFastGather, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> SKXInheritableFeatures = |
| !listconcat(SKLInheritableFeatures, SKXAdditionalFeatures); |
| list<SubtargetFeature> SKXFeatures = |
| !listconcat(SKXInheritableFeatures, SKXSpecificFeatures); |
| |
| // Cascadelake |
| list<SubtargetFeature> CLXAdditionalFeatures = [FeatureVNNI]; |
| list<SubtargetFeature> CLXSpecificFeatures = [FeatureHasFastGather, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> CLXInheritableFeatures = |
| !listconcat(SKXInheritableFeatures, CLXAdditionalFeatures); |
| list<SubtargetFeature> CLXFeatures = |
| !listconcat(CLXInheritableFeatures, CLXSpecificFeatures); |
| |
| // Cooperlake |
| list<SubtargetFeature> CPXAdditionalFeatures = [FeatureBF16]; |
| list<SubtargetFeature> CPXSpecificFeatures = [FeatureHasFastGather, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> CPXInheritableFeatures = |
| !listconcat(CLXInheritableFeatures, CPXAdditionalFeatures); |
| list<SubtargetFeature> CPXFeatures = |
| !listconcat(CPXInheritableFeatures, CPXSpecificFeatures); |
| |
| // Cannonlake |
| list<SubtargetFeature> CNLAdditionalFeatures = [FeatureAVX512, |
| FeaturePrefer256Bit, |
| FeatureCDI, |
| FeatureDQI, |
| FeatureBWI, |
| FeatureVLX, |
| FeaturePKU, |
| FeatureVBMI, |
| FeatureIFMA, |
| FeatureSHA, |
| FeatureSGX]; |
| list<SubtargetFeature> CNLSpecificFeatures = [FeatureHasFastGather]; |
| list<SubtargetFeature> CNLInheritableFeatures = |
| !listconcat(SKLInheritableFeatures, CNLAdditionalFeatures); |
| list<SubtargetFeature> CNLFeatures = |
| !listconcat(CNLInheritableFeatures, CNLSpecificFeatures); |
| |
| // Icelake |
| list<SubtargetFeature> ICLAdditionalFeatures = [FeatureBITALG, |
| FeatureVAES, |
| FeatureVBMI2, |
| FeatureVNNI, |
| FeatureVPCLMULQDQ, |
| FeatureVPOPCNTDQ, |
| FeatureGFNI, |
| FeatureCLWB, |
| FeatureRDPID]; |
| list<SubtargetFeature> ICLSpecificFeatures = [FeatureHasFastGather]; |
| list<SubtargetFeature> ICLInheritableFeatures = |
| !listconcat(CNLInheritableFeatures, ICLAdditionalFeatures); |
| list<SubtargetFeature> ICLFeatures = |
| !listconcat(ICLInheritableFeatures, ICLSpecificFeatures); |
| |
| // Icelake Server |
| list<SubtargetFeature> ICXSpecificFeatures = [FeaturePCONFIG, |
| FeatureWBNOINVD, |
| FeatureHasFastGather]; |
| list<SubtargetFeature> ICXFeatures = |
| !listconcat(ICLInheritableFeatures, ICXSpecificFeatures); |
| |
| //Tigerlake |
| list<SubtargetFeature> TGLAdditionalFeatures = [FeatureVP2INTERSECT, |
| FeatureMOVDIRI, |
| FeatureMOVDIR64B, |
| FeatureSHSTK]; |
| list<SubtargetFeature> TGLSpecificFeatures = [FeatureHasFastGather]; |
| list<SubtargetFeature> TGLInheritableFeatures = |
| !listconcat(TGLAdditionalFeatures ,TGLSpecificFeatures); |
| list<SubtargetFeature> TGLFeatures = |
| !listconcat(ICLFeatures, TGLInheritableFeatures ); |
| |
| // Atom |
| list<SubtargetFeature> AtomInheritableFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureMOVBE, |
| FeatureSlowTwoMemOps, |
| FeatureLAHFSAHF, |
| FeatureInsertVZEROUPPER]; |
| list<SubtargetFeature> AtomSpecificFeatures = [ProcIntelAtom, |
| FeatureSlowUAMem16, |
| FeatureLEAForSP, |
| FeatureSlowDivide32, |
| FeatureSlowDivide64, |
| FeatureLEAUsesAG, |
| FeaturePadShortFunctions]; |
| list<SubtargetFeature> AtomFeatures = |
| !listconcat(AtomInheritableFeatures, AtomSpecificFeatures); |
| |
| // Silvermont |
| list<SubtargetFeature> SLMAdditionalFeatures = [FeatureSSE42, |
| FeaturePOPCNT, |
| FeaturePCLMUL, |
| FeaturePRFCHW, |
| FeatureSlowLEA, |
| FeatureSlowIncDec, |
| FeatureRDRAND]; |
| list<SubtargetFeature> SLMSpecificFeatures = [ProcIntelSLM, |
| FeatureSlowDivide64, |
| FeatureSlowPMULLD, |
| FeatureFast7ByteNOP, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> SLMInheritableFeatures = |
| !listconcat(AtomInheritableFeatures, SLMAdditionalFeatures); |
| list<SubtargetFeature> SLMFeatures = |
| !listconcat(SLMInheritableFeatures, SLMSpecificFeatures); |
| |
| // Goldmont |
| list<SubtargetFeature> GLMAdditionalFeatures = [FeatureAES, |
| FeatureSHA, |
| FeatureRDSEED, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureXSAVEC, |
| FeatureXSAVES, |
| FeatureCLFLUSHOPT, |
| FeatureFSGSBase]; |
| list<SubtargetFeature> GLMSpecificFeatures = [FeatureUseGLMDivSqrtCosts, |
| FeaturePOPCNTFalseDeps]; |
| list<SubtargetFeature> GLMInheritableFeatures = |
| !listconcat(SLMInheritableFeatures, GLMAdditionalFeatures); |
| list<SubtargetFeature> GLMFeatures = |
| !listconcat(GLMInheritableFeatures, GLMSpecificFeatures); |
| |
| // Goldmont Plus |
| list<SubtargetFeature> GLPAdditionalFeatures = [FeaturePTWRITE, |
| FeatureRDPID, |
| FeatureSGX]; |
| list<SubtargetFeature> GLPSpecificFeatures = [FeatureUseGLMDivSqrtCosts]; |
| list<SubtargetFeature> GLPInheritableFeatures = |
| !listconcat(GLMInheritableFeatures, GLPAdditionalFeatures); |
| list<SubtargetFeature> GLPFeatures = |
| !listconcat(GLPInheritableFeatures, GLPSpecificFeatures); |
| |
| // Tremont |
| list<SubtargetFeature> TRMAdditionalFeatures = [FeatureCLWB, |
| FeatureGFNI]; |
| list<SubtargetFeature> TRMSpecificFeatures = [FeatureUseGLMDivSqrtCosts]; |
| list<SubtargetFeature> TRMInheritableFeatures = |
| !listconcat(GLPInheritableFeatures, TRMAdditionalFeatures); |
| list<SubtargetFeature> TRMFeatures = |
| !listconcat(TRMInheritableFeatures, TRMSpecificFeatures); |
| |
| // Knights Landing |
| list<SubtargetFeature> KNLFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeaturePOPCNT, |
| FeatureSlowDivide64, |
| FeaturePCLMUL, |
| FeatureXSAVE, |
| FeatureXSAVEOPT, |
| FeatureLAHFSAHF, |
| FeatureSlow3OpsLEA, |
| FeatureSlowIncDec, |
| FeatureAES, |
| FeatureRDRAND, |
| FeatureF16C, |
| FeatureFSGSBase, |
| FeatureAVX512, |
| FeatureERI, |
| FeatureCDI, |
| FeaturePFI, |
| FeaturePREFETCHWT1, |
| FeatureADX, |
| FeatureRDSEED, |
| FeatureMOVBE, |
| FeatureLZCNT, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureFMA, |
| FeaturePRFCHW, |
| FeaturePreferMaskRegisters, |
| FeatureSlowTwoMemOps, |
| FeatureHasFastGather, |
| FeatureSlowPMADDWD]; |
| // TODO Add AVX5124FMAPS/AVX5124VNNIW features |
| list<SubtargetFeature> KNMFeatures = |
| !listconcat(KNLFeatures, [FeatureVPOPCNTDQ]); |
| |
| // Barcelona |
| list<SubtargetFeature> BarcelonaInheritableFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureSSE4A, |
| Feature3DNowA, |
| FeatureFXSR, |
| FeatureNOPL, |
| FeatureCMPXCHG16B, |
| FeaturePRFCHW, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF, |
| FeatureCMOV, |
| Feature64Bit, |
| FeatureFastScalarShiftMasks, |
| FeatureInsertVZEROUPPER]; |
| list<SubtargetFeature> BarcelonaFeatures = BarcelonaInheritableFeatures; |
| |
| // Bobcat |
| list<SubtargetFeature> BtVer1InheritableFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureSSE4A, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeaturePRFCHW, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF, |
| FeatureFast15ByteNOP, |
| FeatureFastScalarShiftMasks, |
| FeatureFastVectorShiftMasks]; |
| list<SubtargetFeature> BtVer1SpecificFeatures = [FeatureInsertVZEROUPPER]; |
| list<SubtargetFeature> BtVer1Features = |
| !listconcat(BtVer1InheritableFeatures, BtVer1SpecificFeatures); |
| |
| // Jaguar |
| list<SubtargetFeature> BtVer2AdditionalFeatures = [FeatureAVX, |
| FeatureAES, |
| FeaturePCLMUL, |
| FeatureBMI, |
| FeatureF16C, |
| FeatureMOVBE, |
| FeatureXSAVE, |
| FeatureXSAVEOPT]; |
| list<SubtargetFeature> BtVer2SpecificFeatures = [FeatureFastLZCNT, |
| FeatureFastBEXTR, |
| FeatureFastHorizontalOps]; |
| list<SubtargetFeature> BtVer2InheritableFeatures = |
| !listconcat(BtVer1InheritableFeatures, BtVer2AdditionalFeatures); |
| list<SubtargetFeature> BtVer2Features = |
| !listconcat(BtVer2InheritableFeatures, BtVer2SpecificFeatures); |
| |
| // Bulldozer |
| list<SubtargetFeature> BdVer1InheritableFeatures = [FeatureX87, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureXOP, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureAES, |
| FeaturePRFCHW, |
| FeaturePCLMUL, |
| FeatureMMX, |
| FeatureFXSR, |
| FeatureNOPL, |
| FeatureLZCNT, |
| FeaturePOPCNT, |
| FeatureXSAVE, |
| FeatureLWP, |
| FeatureSlowSHLD, |
| FeatureLAHFSAHF, |
| FeatureFast11ByteNOP, |
| FeatureFastScalarShiftMasks, |
| FeatureBranchFusion, |
| FeatureInsertVZEROUPPER]; |
| list<SubtargetFeature> BdVer1Features = BdVer1InheritableFeatures; |
| |
| // PileDriver |
| list<SubtargetFeature> BdVer2AdditionalFeatures = [FeatureF16C, |
| FeatureBMI, |
| FeatureTBM, |
| FeatureFMA, |
| FeatureFastBEXTR]; |
| list<SubtargetFeature> BdVer2InheritableFeatures = |
| !listconcat(BdVer1InheritableFeatures, BdVer2AdditionalFeatures); |
| list<SubtargetFeature> BdVer2Features = BdVer2InheritableFeatures; |
| |
| // Steamroller |
| list<SubtargetFeature> BdVer3AdditionalFeatures = [FeatureXSAVEOPT, |
| FeatureFSGSBase]; |
| list<SubtargetFeature> BdVer3InheritableFeatures = |
| !listconcat(BdVer2InheritableFeatures, BdVer3AdditionalFeatures); |
| list<SubtargetFeature> BdVer3Features = BdVer3InheritableFeatures; |
| |
| // Excavator |
| list<SubtargetFeature> BdVer4AdditionalFeatures = [FeatureAVX2, |
| FeatureBMI2, |
| FeatureMOVBE, |
| FeatureRDRAND, |
| FeatureMWAITX]; |
| list<SubtargetFeature> BdVer4InheritableFeatures = |
| !listconcat(BdVer3InheritableFeatures, BdVer4AdditionalFeatures); |
| list<SubtargetFeature> BdVer4Features = BdVer4InheritableFeatures; |
| |
| |
| // AMD Zen Processors common ISAs |
| list<SubtargetFeature> ZNFeatures = [FeatureADX, |
| FeatureAES, |
| FeatureAVX2, |
| FeatureBMI, |
| FeatureBMI2, |
| FeatureCLFLUSHOPT, |
| FeatureCLZERO, |
| FeatureCMOV, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureF16C, |
| FeatureFMA, |
| FeatureFSGSBase, |
| FeatureFXSR, |
| FeatureNOPL, |
| FeatureFastLZCNT, |
| FeatureLAHFSAHF, |
| FeatureLZCNT, |
| FeatureFastBEXTR, |
| FeatureFast15ByteNOP, |
| FeatureBranchFusion, |
| FeatureFastScalarShiftMasks, |
| FeatureMMX, |
| FeatureMOVBE, |
| FeatureMWAITX, |
| FeaturePCLMUL, |
| FeaturePOPCNT, |
| FeaturePRFCHW, |
| FeatureRDRAND, |
| FeatureRDSEED, |
| FeatureSHA, |
| FeatureSSE4A, |
| FeatureSlowSHLD, |
| FeatureInsertVZEROUPPER, |
| FeatureX87, |
| FeatureXSAVE, |
| FeatureXSAVEC, |
| FeatureXSAVEOPT, |
| FeatureXSAVES]; |
| list<SubtargetFeature> ZN2AdditionalFeatures = [FeatureCLWB, |
| FeatureRDPID, |
| FeatureWBNOINVD]; |
| list<SubtargetFeature> ZN2Features = |
| !listconcat(ZNFeatures, ZN2AdditionalFeatures); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // X86 processors supported. |
| //===----------------------------------------------------------------------===// |
| |
| class Proc<string Name, list<SubtargetFeature> Features> |
| : ProcessorModel<Name, GenericModel, Features>; |
| |
| // NOTE: CMPXCHG8B is here for legacy compatibility so that it is only disabled |
| // if i386/i486 is specifically requested. |
| def : Proc<"generic", [FeatureX87, FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, FeatureInsertVZEROUPPER]>; |
| def : Proc<"i386", [FeatureX87, FeatureSlowUAMem16, |
| FeatureInsertVZEROUPPER]>; |
| def : Proc<"i486", [FeatureX87, FeatureSlowUAMem16, |
| FeatureInsertVZEROUPPER]>; |
| def : Proc<"i586", [FeatureX87, FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, FeatureInsertVZEROUPPER]>; |
| def : Proc<"pentium", [FeatureX87, FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, FeatureInsertVZEROUPPER]>; |
| def : Proc<"pentium-mmx", [FeatureX87, FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, FeatureMMX, |
| FeatureInsertVZEROUPPER]>; |
| |
| def : Proc<"i686", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| def : Proc<"pentiumpro", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureCMOV, FeatureNOPL, FeatureInsertVZEROUPPER]>; |
| |
| def : Proc<"pentium2", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureCMOV, FeatureFXSR, |
| FeatureNOPL, FeatureInsertVZEROUPPER]>; |
| |
| foreach P = ["pentium3", "pentium3m"] in { |
| def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B,FeatureMMX, |
| FeatureSSE1, FeatureFXSR, FeatureNOPL, FeatureCMOV, |
| FeatureInsertVZEROUPPER]>; |
| } |
| |
| // 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, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureSSE2, FeatureFXSR, FeatureNOPL, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| |
| foreach P = ["pentium4", "pentium4m"] in { |
| def : ProcessorModel<P, GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureSSE2, FeatureFXSR, FeatureNOPL, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| } |
| |
| // Intel Quark. |
| def : Proc<"lakemont", [FeatureInsertVZEROUPPER]>; |
| |
| // Intel Core Duo. |
| def : ProcessorModel<"yonah", SandyBridgeModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureSSE3, FeatureFXSR, FeatureNOPL, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| |
| // NetBurst. |
| def : ProcessorModel<"prescott", GenericPostRAModel, |
| [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureSSE3, FeatureFXSR, FeatureNOPL, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| def : ProcessorModel<"nocona", GenericPostRAModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSE3, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureInsertVZEROUPPER |
| ]>; |
| |
| // Intel Core 2 Solo/Duo. |
| def : ProcessorModel<"core2", SandyBridgeModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSSE3, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureLAHFSAHF, |
| FeatureMacroFusion, |
| FeatureInsertVZEROUPPER |
| ]>; |
| def : ProcessorModel<"penryn", SandyBridgeModel, [ |
| FeatureX87, |
| FeatureSlowUAMem16, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSE41, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureCMPXCHG16B, |
| FeatureLAHFSAHF, |
| FeatureMacroFusion, |
| FeatureInsertVZEROUPPER |
| ]>; |
| |
| // Atom CPUs. |
| foreach P = ["bonnell", "atom"] in { |
| def : ProcessorModel<P, AtomModel, ProcessorFeatures.AtomFeatures>; |
| } |
| |
| foreach P = ["silvermont", "slm"] in { |
| def : ProcessorModel<P, SLMModel, ProcessorFeatures.SLMFeatures>; |
| } |
| |
| def : ProcessorModel<"goldmont", SLMModel, ProcessorFeatures.GLMFeatures>; |
| def : ProcessorModel<"goldmont-plus", SLMModel, ProcessorFeatures.GLPFeatures>; |
| def : ProcessorModel<"tremont", SLMModel, ProcessorFeatures.TRMFeatures>; |
| |
| // "Arrandale" along with corei3 and corei5 |
| foreach P = ["nehalem", "corei7"] in { |
| def : ProcessorModel<P, SandyBridgeModel, ProcessorFeatures.NHMFeatures>; |
| } |
| |
| // Westmere is the corei3/i5/i7 path from nehalem to sandybridge |
| def : ProcessorModel<"westmere", SandyBridgeModel, |
| ProcessorFeatures.WSMFeatures>; |
| |
| foreach P = ["sandybridge", "corei7-avx"] in { |
| def : ProcessorModel<P, SandyBridgeModel, ProcessorFeatures.SNBFeatures>; |
| } |
| |
| foreach P = ["ivybridge", "core-avx-i"] in { |
| def : ProcessorModel<P, SandyBridgeModel, ProcessorFeatures.IVBFeatures>; |
| } |
| |
| foreach P = ["haswell", "core-avx2"] in { |
| def : ProcessorModel<P, HaswellModel, ProcessorFeatures.HSWFeatures>; |
| } |
| |
| def : ProcessorModel<"broadwell", BroadwellModel, |
| ProcessorFeatures.BDWFeatures>; |
| |
| def : ProcessorModel<"skylake", SkylakeClientModel, |
| ProcessorFeatures.SKLFeatures>; |
| |
| // FIXME: define KNL scheduler model |
| def : ProcessorModel<"knl", HaswellModel, ProcessorFeatures.KNLFeatures>; |
| def : ProcessorModel<"knm", HaswellModel, ProcessorFeatures.KNMFeatures>; |
| |
| foreach P = ["skylake-avx512", "skx"] in { |
| def : ProcessorModel<P, SkylakeServerModel, ProcessorFeatures.SKXFeatures>; |
| } |
| |
| def : ProcessorModel<"cascadelake", SkylakeServerModel, |
| ProcessorFeatures.CLXFeatures>; |
| def : ProcessorModel<"cooperlake", SkylakeServerModel, |
| ProcessorFeatures.CPXFeatures>; |
| def : ProcessorModel<"cannonlake", SkylakeServerModel, |
| ProcessorFeatures.CNLFeatures>; |
| def : ProcessorModel<"icelake-client", SkylakeServerModel, |
| ProcessorFeatures.ICLFeatures>; |
| def : ProcessorModel<"icelake-server", SkylakeServerModel, |
| ProcessorFeatures.ICXFeatures>; |
| def : ProcessorModel<"tigerlake", SkylakeServerModel, |
| ProcessorFeatures.TGLFeatures>; |
| |
| // AMD CPUs. |
| |
| def : Proc<"k6", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureInsertVZEROUPPER]>; |
| def : Proc<"k6-2", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| Feature3DNow, FeatureInsertVZEROUPPER]>; |
| def : Proc<"k6-3", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| Feature3DNow, FeatureInsertVZEROUPPER]>; |
| |
| foreach P = ["athlon", "athlon-tbird"] in { |
| def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, FeatureCMOV, |
| Feature3DNowA, FeatureNOPL, FeatureSlowSHLD, |
| FeatureInsertVZEROUPPER]>; |
| } |
| |
| foreach P = ["athlon-4", "athlon-xp", "athlon-mp"] in { |
| def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, FeatureCMOV, |
| FeatureSSE1, Feature3DNowA, FeatureFXSR, FeatureNOPL, |
| FeatureSlowSHLD, FeatureInsertVZEROUPPER]>; |
| } |
| |
| foreach P = ["k8", "opteron", "athlon64", "athlon-fx"] in { |
| def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureSSE2, Feature3DNowA, FeatureFXSR, FeatureNOPL, |
| Feature64Bit, FeatureSlowSHLD, FeatureCMOV, |
| FeatureFastScalarShiftMasks, FeatureInsertVZEROUPPER]>; |
| } |
| |
| foreach P = ["k8-sse3", "opteron-sse3", "athlon64-sse3"] in { |
| def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, FeatureSSE3, |
| Feature3DNowA, FeatureFXSR, FeatureNOPL, FeatureCMPXCHG16B, |
| FeatureSlowSHLD, FeatureCMOV, Feature64Bit, |
| FeatureFastScalarShiftMasks, FeatureInsertVZEROUPPER]>; |
| } |
| |
| foreach P = ["amdfam10", "barcelona"] in { |
| def : Proc<P, ProcessorFeatures.BarcelonaFeatures>; |
| } |
| |
| // Bobcat |
| def : Proc<"btver1", ProcessorFeatures.BtVer1Features>; |
| // Jaguar |
| def : ProcessorModel<"btver2", BtVer2Model, ProcessorFeatures.BtVer2Features>; |
| |
| // Bulldozer |
| def : ProcessorModel<"bdver1", BdVer2Model, ProcessorFeatures.BdVer1Features>; |
| // Piledriver |
| def : ProcessorModel<"bdver2", BdVer2Model, ProcessorFeatures.BdVer2Features>; |
| // Steamroller |
| def : Proc<"bdver3", ProcessorFeatures.BdVer3Features>; |
| // Excavator |
| def : Proc<"bdver4", ProcessorFeatures.BdVer4Features>; |
| |
| def : ProcessorModel<"znver1", Znver1Model, ProcessorFeatures.ZNFeatures>; |
| def : ProcessorModel<"znver2", Znver2Model, ProcessorFeatures.ZN2Features>; |
| |
| def : Proc<"geode", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| Feature3DNowA, FeatureInsertVZEROUPPER]>; |
| |
| def : Proc<"winchip-c6", [FeatureX87, FeatureSlowUAMem16, FeatureMMX, |
| FeatureInsertVZEROUPPER]>; |
| def : Proc<"winchip2", [FeatureX87, FeatureSlowUAMem16, Feature3DNow, |
| FeatureInsertVZEROUPPER]>; |
| def : Proc<"c3", [FeatureX87, FeatureSlowUAMem16, Feature3DNow, |
| FeatureInsertVZEROUPPER]>; |
| def : Proc<"c3-2", [FeatureX87, FeatureSlowUAMem16, FeatureCMPXCHG8B, |
| FeatureMMX, FeatureSSE1, FeatureFXSR, |
| FeatureCMOV, FeatureInsertVZEROUPPER]>; |
| |
| // 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, |
| FeatureCMPXCHG8B, |
| FeatureCMOV, |
| FeatureMMX, |
| FeatureSSE2, |
| FeatureFXSR, |
| FeatureNOPL, |
| Feature64Bit, |
| FeatureSlow3OpsLEA, |
| FeatureSlowDivide64, |
| FeatureSlowIncDec, |
| FeatureMacroFusion, |
| FeatureInsertVZEROUPPER |
| ]>; |
| |
| //===----------------------------------------------------------------------===// |
| // 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]; |
| let AllowRegisterRenaming = 1; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Pfm Counters |
| //===----------------------------------------------------------------------===// |
| |
| include "X86PfmCounters.td" |
