1048 lines
38 KiB
TableGen
1048 lines
38 KiB
TableGen
//===-- X86.td - Target definition file for the Intel X86 --*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This is a target description file for the Intel i386 architecture, referred
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// to here as the "X86" architecture.
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//
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//===----------------------------------------------------------------------===//
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// Get the target-independent interfaces which we are implementing...
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//
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include "llvm/Target/Target.td"
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//===----------------------------------------------------------------------===//
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// X86 Subtarget state
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//
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def Mode64Bit : SubtargetFeature<"64bit-mode", "In64BitMode", "true",
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"64-bit mode (x86_64)">;
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def Mode32Bit : SubtargetFeature<"32bit-mode", "In32BitMode", "true",
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"32-bit mode (80386)">;
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def Mode16Bit : SubtargetFeature<"16bit-mode", "In16BitMode", "true",
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"16-bit mode (i8086)">;
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//===----------------------------------------------------------------------===//
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// X86 Subtarget features
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//===----------------------------------------------------------------------===//
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def FeatureX87 : SubtargetFeature<"x87","HasX87", "true",
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"Enable X87 float instructions">;
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def FeatureCMOV : SubtargetFeature<"cmov","HasCMov", "true",
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"Enable conditional move instructions">;
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def FeaturePOPCNT : SubtargetFeature<"popcnt", "HasPOPCNT", "true",
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"Support POPCNT instruction">;
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def FeatureFXSR : SubtargetFeature<"fxsr", "HasFXSR", "true",
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"Support fxsave/fxrestore instructions">;
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def FeatureXSAVE : SubtargetFeature<"xsave", "HasXSAVE", "true",
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"Support xsave instructions">;
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def FeatureXSAVEOPT: SubtargetFeature<"xsaveopt", "HasXSAVEOPT", "true",
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"Support xsaveopt instructions">;
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def FeatureXSAVEC : SubtargetFeature<"xsavec", "HasXSAVEC", "true",
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"Support xsavec instructions">;
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def FeatureXSAVES : SubtargetFeature<"xsaves", "HasXSAVES", "true",
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"Support xsaves instructions">;
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def FeatureSSE1 : SubtargetFeature<"sse", "X86SSELevel", "SSE1",
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"Enable SSE instructions",
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// SSE codegen depends on cmovs, and all
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// SSE1+ processors support them.
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[FeatureCMOV]>;
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def FeatureSSE2 : SubtargetFeature<"sse2", "X86SSELevel", "SSE2",
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"Enable SSE2 instructions",
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[FeatureSSE1]>;
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def FeatureSSE3 : SubtargetFeature<"sse3", "X86SSELevel", "SSE3",
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"Enable SSE3 instructions",
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[FeatureSSE2]>;
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def FeatureSSSE3 : SubtargetFeature<"ssse3", "X86SSELevel", "SSSE3",
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"Enable SSSE3 instructions",
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[FeatureSSE3]>;
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def FeatureSSE41 : SubtargetFeature<"sse4.1", "X86SSELevel", "SSE41",
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"Enable SSE 4.1 instructions",
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[FeatureSSSE3]>;
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def FeatureSSE42 : SubtargetFeature<"sse4.2", "X86SSELevel", "SSE42",
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"Enable SSE 4.2 instructions",
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[FeatureSSE41]>;
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// The MMX subtarget feature is separate from the rest of the SSE features
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// because it's important (for odd compatibility reasons) to be able to
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// turn it off explicitly while allowing SSE+ to be on.
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def FeatureMMX : SubtargetFeature<"mmx","X863DNowLevel", "MMX",
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"Enable MMX instructions">;
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def Feature3DNow : SubtargetFeature<"3dnow", "X863DNowLevel", "ThreeDNow",
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"Enable 3DNow! instructions",
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[FeatureMMX]>;
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def Feature3DNowA : SubtargetFeature<"3dnowa", "X863DNowLevel", "ThreeDNowA",
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"Enable 3DNow! Athlon instructions",
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[Feature3DNow]>;
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// All x86-64 hardware has SSE2, but we don't mark SSE2 as an implied
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// feature, because SSE2 can be disabled (e.g. for compiling OS kernels)
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// without disabling 64-bit mode.
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def Feature64Bit : SubtargetFeature<"64bit", "HasX86_64", "true",
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"Support 64-bit instructions",
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[FeatureCMOV]>;
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def FeatureCMPXCHG16B : SubtargetFeature<"cx16", "HasCmpxchg16b", "true",
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"64-bit with cmpxchg16b",
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[Feature64Bit]>;
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def FeatureSlowSHLD : SubtargetFeature<"slow-shld", "IsSHLDSlow", "true",
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"SHLD instruction is slow">;
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def FeatureSlowPMULLD : SubtargetFeature<"slow-pmulld", "IsPMULLDSlow", "true",
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"PMULLD instruction is slow">;
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// FIXME: This should not apply to CPUs that do not have SSE.
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def FeatureSlowUAMem16 : SubtargetFeature<"slow-unaligned-mem-16",
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"IsUAMem16Slow", "true",
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"Slow unaligned 16-byte memory access">;
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def FeatureSlowUAMem32 : SubtargetFeature<"slow-unaligned-mem-32",
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"IsUAMem32Slow", "true",
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"Slow unaligned 32-byte memory access">;
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def FeatureSSE4A : SubtargetFeature<"sse4a", "HasSSE4A", "true",
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"Support SSE 4a instructions",
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[FeatureSSE3]>;
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def FeatureAVX : SubtargetFeature<"avx", "X86SSELevel", "AVX",
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"Enable AVX instructions",
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[FeatureSSE42]>;
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def FeatureAVX2 : SubtargetFeature<"avx2", "X86SSELevel", "AVX2",
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"Enable AVX2 instructions",
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[FeatureAVX]>;
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def FeatureFMA : SubtargetFeature<"fma", "HasFMA", "true",
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"Enable three-operand fused multiple-add",
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[FeatureAVX]>;
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def FeatureF16C : SubtargetFeature<"f16c", "HasF16C", "true",
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"Support 16-bit floating point conversion instructions",
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[FeatureAVX]>;
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def FeatureAVX512 : SubtargetFeature<"avx512f", "X86SSELevel", "AVX512F",
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"Enable AVX-512 instructions",
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[FeatureAVX2, FeatureFMA, FeatureF16C]>;
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def FeatureERI : SubtargetFeature<"avx512er", "HasERI", "true",
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"Enable AVX-512 Exponential and Reciprocal Instructions",
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[FeatureAVX512]>;
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def FeatureCDI : SubtargetFeature<"avx512cd", "HasCDI", "true",
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"Enable AVX-512 Conflict Detection Instructions",
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[FeatureAVX512]>;
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def FeatureVPOPCNTDQ : SubtargetFeature<"avx512vpopcntdq", "HasVPOPCNTDQ",
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"true", "Enable AVX-512 Population Count Instructions",
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[FeatureAVX512]>;
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def FeaturePFI : SubtargetFeature<"avx512pf", "HasPFI", "true",
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"Enable AVX-512 PreFetch Instructions",
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[FeatureAVX512]>;
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def FeaturePREFETCHWT1 : SubtargetFeature<"prefetchwt1", "HasPREFETCHWT1",
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"true",
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"Prefetch with Intent to Write and T1 Hint">;
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def FeatureDQI : SubtargetFeature<"avx512dq", "HasDQI", "true",
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"Enable AVX-512 Doubleword and Quadword Instructions",
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[FeatureAVX512]>;
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def FeatureBWI : SubtargetFeature<"avx512bw", "HasBWI", "true",
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"Enable AVX-512 Byte and Word Instructions",
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[FeatureAVX512]>;
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def FeatureVLX : SubtargetFeature<"avx512vl", "HasVLX", "true",
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"Enable AVX-512 Vector Length eXtensions",
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[FeatureAVX512]>;
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def FeatureVBMI : SubtargetFeature<"avx512vbmi", "HasVBMI", "true",
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"Enable AVX-512 Vector Byte Manipulation Instructions",
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[FeatureBWI]>;
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def FeatureVBMI2 : SubtargetFeature<"avx512vbmi2", "HasVBMI2", "true",
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"Enable AVX-512 further Vector Byte Manipulation Instructions",
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[FeatureBWI]>;
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def FeatureIFMA : SubtargetFeature<"avx512ifma", "HasIFMA", "true",
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"Enable AVX-512 Integer Fused Multiple-Add",
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[FeatureAVX512]>;
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def FeaturePKU : SubtargetFeature<"pku", "HasPKU", "true",
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"Enable protection keys">;
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def FeatureVNNI : SubtargetFeature<"avx512vnni", "HasVNNI", "true",
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"Enable AVX-512 Vector Neural Network Instructions",
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[FeatureAVX512]>;
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def FeatureBITALG : SubtargetFeature<"avx512bitalg", "HasBITALG", "true",
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"Enable AVX-512 Bit Algorithms",
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[FeatureBWI]>;
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def FeaturePCLMUL : SubtargetFeature<"pclmul", "HasPCLMUL", "true",
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"Enable packed carry-less multiplication instructions",
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[FeatureSSE2]>;
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def FeatureGFNI : SubtargetFeature<"gfni", "HasGFNI", "true",
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"Enable Galois Field Arithmetic Instructions",
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[FeatureSSE2]>;
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def FeatureVPCLMULQDQ : SubtargetFeature<"vpclmulqdq", "HasVPCLMULQDQ", "true",
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"Enable vpclmulqdq instructions",
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[FeatureAVX, FeaturePCLMUL]>;
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def FeatureFMA4 : SubtargetFeature<"fma4", "HasFMA4", "true",
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"Enable four-operand fused multiple-add",
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[FeatureAVX, FeatureSSE4A]>;
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def FeatureXOP : SubtargetFeature<"xop", "HasXOP", "true",
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"Enable XOP instructions",
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[FeatureFMA4]>;
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def FeatureSSEUnalignedMem : SubtargetFeature<"sse-unaligned-mem",
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"HasSSEUnalignedMem", "true",
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"Allow unaligned memory operands with SSE instructions">;
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def FeatureAES : SubtargetFeature<"aes", "HasAES", "true",
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"Enable AES instructions",
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[FeatureSSE2]>;
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def FeatureVAES : SubtargetFeature<"vaes", "HasVAES", "true",
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"Promote selected AES instructions to AVX512/AVX registers",
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[FeatureAVX, FeatureAES]>;
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def FeatureTBM : SubtargetFeature<"tbm", "HasTBM", "true",
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"Enable TBM instructions">;
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def FeatureLWP : SubtargetFeature<"lwp", "HasLWP", "true",
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"Enable LWP instructions">;
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def FeatureMOVBE : SubtargetFeature<"movbe", "HasMOVBE", "true",
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"Support MOVBE instruction">;
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def FeatureRDRAND : SubtargetFeature<"rdrnd", "HasRDRAND", "true",
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"Support RDRAND instruction">;
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def FeatureFSGSBase : SubtargetFeature<"fsgsbase", "HasFSGSBase", "true",
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"Support FS/GS Base instructions">;
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def FeatureLZCNT : SubtargetFeature<"lzcnt", "HasLZCNT", "true",
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"Support LZCNT instruction">;
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def FeatureBMI : SubtargetFeature<"bmi", "HasBMI", "true",
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"Support BMI instructions">;
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def FeatureBMI2 : SubtargetFeature<"bmi2", "HasBMI2", "true",
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"Support BMI2 instructions">;
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def FeatureRTM : SubtargetFeature<"rtm", "HasRTM", "true",
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"Support RTM instructions">;
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def FeatureADX : SubtargetFeature<"adx", "HasADX", "true",
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"Support ADX instructions">;
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def FeatureSHA : SubtargetFeature<"sha", "HasSHA", "true",
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"Enable SHA instructions",
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[FeatureSSE2]>;
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def FeatureSHSTK : SubtargetFeature<"shstk", "HasSHSTK", "true",
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"Support CET Shadow-Stack instructions">;
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def FeatureIBT : SubtargetFeature<"ibt", "HasIBT", "true",
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"Support CET Indirect-Branch-Tracking instructions">;
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def FeaturePRFCHW : SubtargetFeature<"prfchw", "HasPRFCHW", "true",
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"Support PRFCHW instructions">;
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def FeatureRDSEED : SubtargetFeature<"rdseed", "HasRDSEED", "true",
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"Support RDSEED instruction">;
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def FeatureLAHFSAHF : SubtargetFeature<"sahf", "HasLAHFSAHF", "true",
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"Support LAHF and SAHF instructions">;
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def FeatureMWAITX : SubtargetFeature<"mwaitx", "HasMWAITX", "true",
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"Enable MONITORX/MWAITX timer functionality">;
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def FeatureCLZERO : SubtargetFeature<"clzero", "HasCLZERO", "true",
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"Enable Cache Line Zero">;
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def FeatureMPX : SubtargetFeature<"mpx", "HasMPX", "true",
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"Support MPX instructions">;
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def FeatureLEAForSP : SubtargetFeature<"lea-sp", "UseLeaForSP", "true",
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"Use LEA for adjusting the stack pointer">;
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def FeatureSlowDivide32 : SubtargetFeature<"idivl-to-divb",
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"HasSlowDivide32", "true",
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"Use 8-bit divide for positive values less than 256">;
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def FeatureSlowDivide64 : SubtargetFeature<"idivq-to-divl",
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"HasSlowDivide64", "true",
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"Use 32-bit divide for positive values less than 2^32">;
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def FeaturePadShortFunctions : SubtargetFeature<"pad-short-functions",
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"PadShortFunctions", "true",
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"Pad short functions">;
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def FeatureSGX : SubtargetFeature<"sgx", "HasSGX", "true",
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"Enable Software Guard Extensions">;
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def FeatureCLFLUSHOPT : SubtargetFeature<"clflushopt", "HasCLFLUSHOPT", "true",
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"Flush A Cache Line Optimized">;
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def FeatureCLWB : SubtargetFeature<"clwb", "HasCLWB", "true",
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"Cache Line Write Back">;
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// On some processors, instructions that implicitly take two memory operands are
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// slow. In practice, this means that CALL, PUSH, and POP with memory operands
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// should be avoided in favor of a MOV + register CALL/PUSH/POP.
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def FeatureSlowTwoMemOps : SubtargetFeature<"slow-two-mem-ops",
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"SlowTwoMemOps", "true",
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"Two memory operand instructions are slow">;
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def FeatureLEAUsesAG : SubtargetFeature<"lea-uses-ag", "LEAUsesAG", "true",
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"LEA instruction needs inputs at AG stage">;
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def FeatureSlowLEA : SubtargetFeature<"slow-lea", "SlowLEA", "true",
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"LEA instruction with certain arguments is slow">;
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def FeatureSlow3OpsLEA : SubtargetFeature<"slow-3ops-lea", "Slow3OpsLEA", "true",
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"LEA instruction with 3 ops or certain registers is slow">;
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def FeatureSlowIncDec : SubtargetFeature<"slow-incdec", "SlowIncDec", "true",
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"INC and DEC instructions are slower than ADD and SUB">;
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def FeatureSoftFloat
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: SubtargetFeature<"soft-float", "UseSoftFloat", "true",
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"Use software floating point features.">;
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// On recent X86 (port bound) processors, its preferable to combine to a single shuffle
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// using a variable mask over multiple fixed shuffles.
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def FeatureFastVariableShuffle
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: SubtargetFeature<"fast-variable-shuffle",
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"HasFastVariableShuffle",
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"true", "Shuffles with variable masks are fast">;
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// On some X86 processors, there is no performance hazard to writing only the
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// lower parts of a YMM or ZMM register without clearing the upper part.
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def FeatureFastPartialYMMorZMMWrite
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: SubtargetFeature<"fast-partial-ymm-or-zmm-write",
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"HasFastPartialYMMorZMMWrite",
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"true", "Partial writes to YMM/ZMM registers are fast">;
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// FeatureFastScalarFSQRT should be enabled if scalar FSQRT has shorter latency
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// than the corresponding NR code. FeatureFastVectorFSQRT should be enabled if
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// vector FSQRT has higher throughput than the corresponding NR code.
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// The idea is that throughput bound code is likely to be vectorized, so for
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// vectorized code we should care about the throughput of SQRT operations.
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// But if the code is scalar that probably means that the code has some kind of
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// dependency and we should care more about reducing the latency.
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def FeatureFastScalarFSQRT
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: SubtargetFeature<"fast-scalar-fsqrt", "HasFastScalarFSQRT",
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"true", "Scalar SQRT is fast (disable Newton-Raphson)">;
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def FeatureFastVectorFSQRT
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: SubtargetFeature<"fast-vector-fsqrt", "HasFastVectorFSQRT",
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"true", "Vector SQRT is fast (disable Newton-Raphson)">;
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// If lzcnt has equivalent latency/throughput to most simple integer ops, it can
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// be used to replace test/set sequences.
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def FeatureFastLZCNT
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: SubtargetFeature<
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"fast-lzcnt", "HasFastLZCNT", "true",
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"LZCNT instructions are as fast as most simple integer ops">;
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// Sandy Bridge and newer processors can use SHLD with the same source on both
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// inputs to implement rotate to avoid the partial flag update of the normal
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// rotate instructions.
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def FeatureFastSHLDRotate
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: SubtargetFeature<
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"fast-shld-rotate", "HasFastSHLDRotate", "true",
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"SHLD can be used as a faster rotate">;
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// Ivy Bridge and newer processors have enhanced REP MOVSB and STOSB (aka
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// "string operations"). See "REP String Enhancement" in the Intel Software
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// Development Manual. This feature essentially means that REP MOVSB will copy
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// using the largest available size instead of copying bytes one by one, making
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// it at least as fast as REPMOVS{W,D,Q}.
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def FeatureERMSB
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: SubtargetFeature<
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"ermsb", "HasERMSB", "true",
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"REP MOVS/STOS are fast">;
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// Sandy Bridge and newer processors have many instructions that can be
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// fused with conditional branches and pass through the CPU as a single
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// operation.
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def FeatureMacroFusion
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: SubtargetFeature<"macrofusion", "HasMacroFusion", "true",
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"Various instructions can be fused with conditional branches">;
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// Gather is available since Haswell (AVX2 set). So technically, we can
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// generate Gathers on all AVX2 processors. But the overhead on HSW is high.
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// Skylake Client processor has faster Gathers than HSW and performance is
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// similar to Skylake Server (AVX-512).
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def FeatureHasFastGather
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: SubtargetFeature<"fast-gather", "HasFastGather", "true",
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"Indicates if gather is reasonably fast.">;
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//===----------------------------------------------------------------------===//
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// Register File Description
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//===----------------------------------------------------------------------===//
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include "X86RegisterInfo.td"
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include "X86RegisterBanks.td"
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//===----------------------------------------------------------------------===//
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// Instruction Descriptions
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//===----------------------------------------------------------------------===//
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include "X86Schedule.td"
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include "X86InstrInfo.td"
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def X86InstrInfo : InstrInfo;
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//===----------------------------------------------------------------------===//
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// X86 processors supported.
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//===----------------------------------------------------------------------===//
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include "X86ScheduleAtom.td"
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include "X86SchedSandyBridge.td"
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include "X86SchedHaswell.td"
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include "X86SchedBroadwell.td"
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include "X86ScheduleSLM.td"
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include "X86ScheduleZnver1.td"
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include "X86ScheduleBtVer2.td"
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include "X86SchedSkylakeClient.td"
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include "X86SchedSkylakeServer.td"
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def ProcIntelAtom : SubtargetFeature<"atom", "X86ProcFamily", "IntelAtom",
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"Intel Atom processors">;
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def ProcIntelSLM : SubtargetFeature<"slm", "X86ProcFamily", "IntelSLM",
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"Intel Silvermont processors">;
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def ProcIntelGLM : SubtargetFeature<"glm", "X86ProcFamily", "IntelGLM",
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"Intel Goldmont processors">;
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def ProcIntelHSW : SubtargetFeature<"haswell", "X86ProcFamily",
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"IntelHaswell", "Intel Haswell processors">;
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def ProcIntelBDW : SubtargetFeature<"broadwell", "X86ProcFamily",
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"IntelBroadwell", "Intel Broadwell processors">;
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def ProcIntelSKL : SubtargetFeature<"skylake", "X86ProcFamily",
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"IntelSkylake", "Intel Skylake processors">;
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def ProcIntelKNL : SubtargetFeature<"knl", "X86ProcFamily",
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"IntelKNL", "Intel Knights Landing processors">;
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def ProcIntelSKX : SubtargetFeature<"skx", "X86ProcFamily",
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"IntelSKX", "Intel Skylake Server processors">;
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def ProcIntelCNL : SubtargetFeature<"cannonlake", "X86ProcFamily",
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"IntelCannonlake", "Intel Cannonlake processors">;
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def ProcIntelICL : SubtargetFeature<"icelake", "X86ProcFamily",
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"IntelIcelake", "Intel Icelake processors">;
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class Proc<string Name, list<SubtargetFeature> Features>
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: ProcessorModel<Name, GenericModel, Features>;
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def : Proc<"generic", [FeatureX87, FeatureSlowUAMem16]>;
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def : Proc<"i386", [FeatureX87, FeatureSlowUAMem16]>;
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def : Proc<"i486", [FeatureX87, FeatureSlowUAMem16]>;
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def : Proc<"i586", [FeatureX87, FeatureSlowUAMem16]>;
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def : Proc<"pentium", [FeatureX87, FeatureSlowUAMem16]>;
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def : Proc<"pentium-mmx", [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>;
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|
foreach P = ["i686", "pentiumpro"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureCMOV]>;
|
|
}
|
|
|
|
def : Proc<"pentium2", [FeatureX87, FeatureSlowUAMem16, FeatureMMX,
|
|
FeatureCMOV, FeatureFXSR]>;
|
|
|
|
foreach P = ["pentium3", "pentium3m"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureMMX, FeatureSSE1,
|
|
FeatureFXSR]>;
|
|
}
|
|
|
|
// 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]>;
|
|
|
|
foreach P = ["pentium4", "pentium4m"] in {
|
|
def : ProcessorModel<P, GenericPostRAModel,
|
|
[FeatureX87, FeatureSlowUAMem16, FeatureMMX,
|
|
FeatureSSE2, FeatureFXSR]>;
|
|
}
|
|
|
|
// Intel Quark.
|
|
def : Proc<"lakemont", []>;
|
|
|
|
// Intel Core Duo.
|
|
def : ProcessorModel<"yonah", SandyBridgeModel,
|
|
[FeatureX87, FeatureSlowUAMem16, FeatureMMX, FeatureSSE3,
|
|
FeatureFXSR]>;
|
|
|
|
// NetBurst.
|
|
def : ProcessorModel<"prescott", GenericPostRAModel,
|
|
[FeatureX87, FeatureSlowUAMem16, FeatureMMX, FeatureSSE3,
|
|
FeatureFXSR]>;
|
|
def : ProcessorModel<"nocona", GenericPostRAModel, [
|
|
FeatureX87,
|
|
FeatureSlowUAMem16,
|
|
FeatureMMX,
|
|
FeatureSSE3,
|
|
FeatureFXSR,
|
|
FeatureCMPXCHG16B
|
|
]>;
|
|
|
|
// Intel Core 2 Solo/Duo.
|
|
def : ProcessorModel<"core2", SandyBridgeModel, [
|
|
FeatureX87,
|
|
FeatureSlowUAMem16,
|
|
FeatureMMX,
|
|
FeatureSSSE3,
|
|
FeatureFXSR,
|
|
FeatureCMPXCHG16B,
|
|
FeatureLAHFSAHF,
|
|
FeatureMacroFusion
|
|
]>;
|
|
def : ProcessorModel<"penryn", SandyBridgeModel, [
|
|
FeatureX87,
|
|
FeatureSlowUAMem16,
|
|
FeatureMMX,
|
|
FeatureSSE41,
|
|
FeatureFXSR,
|
|
FeatureCMPXCHG16B,
|
|
FeatureLAHFSAHF,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
// Atom CPUs.
|
|
class BonnellProc<string Name> : ProcessorModel<Name, AtomModel, [
|
|
ProcIntelAtom,
|
|
FeatureX87,
|
|
FeatureSlowUAMem16,
|
|
FeatureMMX,
|
|
FeatureSSSE3,
|
|
FeatureFXSR,
|
|
FeatureCMPXCHG16B,
|
|
FeatureMOVBE,
|
|
FeatureLEAForSP,
|
|
FeatureSlowDivide32,
|
|
FeatureSlowDivide64,
|
|
FeatureSlowTwoMemOps,
|
|
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,
|
|
FeatureSlowTwoMemOps,
|
|
FeaturePRFCHW,
|
|
FeatureSlowLEA,
|
|
FeatureSlowIncDec,
|
|
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,
|
|
FeatureSlowTwoMemOps,
|
|
FeatureSlowLEA,
|
|
FeatureSlowIncDec,
|
|
FeatureLAHFSAHF,
|
|
FeatureMPX,
|
|
FeatureSHA,
|
|
FeatureRDRAND,
|
|
FeatureRDSEED,
|
|
FeatureXSAVE,
|
|
FeatureXSAVEOPT,
|
|
FeatureXSAVEC,
|
|
FeatureXSAVES,
|
|
FeatureCLFLUSHOPT,
|
|
FeatureFSGSBase
|
|
]>;
|
|
def : GoldmontProc<"goldmont">;
|
|
|
|
// "Arrandale" along with corei3 and corei5
|
|
class NehalemProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [
|
|
FeatureX87,
|
|
FeatureMMX,
|
|
FeatureSSE42,
|
|
FeatureFXSR,
|
|
FeatureCMPXCHG16B,
|
|
FeaturePOPCNT,
|
|
FeatureLAHFSAHF,
|
|
FeatureMacroFusion
|
|
]>;
|
|
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,
|
|
FeaturePOPCNT,
|
|
FeatureAES,
|
|
FeaturePCLMUL,
|
|
FeatureLAHFSAHF,
|
|
FeatureMacroFusion
|
|
]>;
|
|
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,
|
|
FeatureSlowIncDec,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
class SandyBridgeProc<string Name> : ProcModel<Name, SandyBridgeModel,
|
|
SNBFeatures.Value, [
|
|
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, [
|
|
FeatureSlowUAMem32
|
|
]>;
|
|
def : IvyBridgeProc<"ivybridge">;
|
|
def : IvyBridgeProc<"core-avx-i">; // Legacy alias.
|
|
|
|
def HSWFeatures : ProcessorFeatures<IVBFeatures.Value, [
|
|
FeatureAVX2,
|
|
FeatureBMI,
|
|
FeatureBMI2,
|
|
FeatureERMSB,
|
|
FeatureFMA,
|
|
FeatureLZCNT,
|
|
FeatureMOVBE,
|
|
FeatureFastVariableShuffle
|
|
]>;
|
|
|
|
class HaswellProc<string Name> : ProcModel<Name, HaswellModel,
|
|
HSWFeatures.Value, [
|
|
ProcIntelHSW
|
|
]>;
|
|
def : HaswellProc<"haswell">;
|
|
def : HaswellProc<"core-avx2">; // Legacy alias.
|
|
|
|
def BDWFeatures : ProcessorFeatures<HSWFeatures.Value, [
|
|
FeatureADX,
|
|
FeatureRDSEED,
|
|
FeaturePRFCHW
|
|
]>;
|
|
class BroadwellProc<string Name> : ProcModel<Name, BroadwellModel,
|
|
BDWFeatures.Value, [
|
|
ProcIntelBDW
|
|
]>;
|
|
def : BroadwellProc<"broadwell">;
|
|
|
|
def SKLFeatures : ProcessorFeatures<BDWFeatures.Value, [
|
|
FeatureMPX,
|
|
FeatureRTM,
|
|
FeatureXSAVEC,
|
|
FeatureXSAVES,
|
|
FeatureSGX,
|
|
FeatureCLFLUSHOPT,
|
|
FeatureFastVectorFSQRT
|
|
]>;
|
|
|
|
class SkylakeClientProc<string Name> : ProcModel<Name, SkylakeClientModel,
|
|
SKLFeatures.Value, [
|
|
ProcIntelSKL,
|
|
FeatureHasFastGather
|
|
]>;
|
|
def : SkylakeClientProc<"skylake">;
|
|
|
|
def KNLFeatures : ProcessorFeatures<IVBFeatures.Value, [
|
|
FeatureAVX512,
|
|
FeatureERI,
|
|
FeatureCDI,
|
|
FeaturePFI,
|
|
FeaturePREFETCHWT1,
|
|
FeatureADX,
|
|
FeatureRDSEED,
|
|
FeatureMOVBE,
|
|
FeatureLZCNT,
|
|
FeatureBMI,
|
|
FeatureBMI2,
|
|
FeatureFMA,
|
|
FeaturePRFCHW
|
|
]>;
|
|
|
|
// FIXME: define KNL model
|
|
class KnightsLandingProc<string Name> : ProcModel<Name, HaswellModel,
|
|
KNLFeatures.Value, [
|
|
ProcIntelKNL,
|
|
FeatureSlowTwoMemOps,
|
|
FeatureFastPartialYMMorZMMWrite,
|
|
FeatureHasFastGather
|
|
]>;
|
|
def : KnightsLandingProc<"knl">;
|
|
|
|
class KnightsMillProc<string Name> : ProcModel<Name, HaswellModel,
|
|
KNLFeatures.Value, [
|
|
ProcIntelKNL,
|
|
FeatureSlowTwoMemOps,
|
|
FeatureFastPartialYMMorZMMWrite,
|
|
FeatureHasFastGather,
|
|
FeatureVPOPCNTDQ
|
|
]>;
|
|
def : KnightsMillProc<"knm">; // TODO Add AVX5124FMAPS/AVX5124VNNIW features
|
|
|
|
def SKXFeatures : ProcessorFeatures<SKLFeatures.Value, [
|
|
FeatureAVX512,
|
|
FeatureCDI,
|
|
FeatureDQI,
|
|
FeatureBWI,
|
|
FeatureVLX,
|
|
FeaturePKU,
|
|
FeatureCLWB
|
|
]>;
|
|
|
|
class SkylakeServerProc<string Name> : ProcModel<Name, SkylakeServerModel,
|
|
SKXFeatures.Value, [
|
|
ProcIntelSKX,
|
|
FeatureHasFastGather
|
|
]>;
|
|
def : SkylakeServerProc<"skylake-avx512">;
|
|
def : SkylakeServerProc<"skx">; // Legacy alias.
|
|
|
|
def CNLFeatures : ProcessorFeatures<SKXFeatures.Value, [
|
|
FeatureVBMI,
|
|
FeatureIFMA,
|
|
FeatureSHA
|
|
]>;
|
|
|
|
class CannonlakeProc<string Name> : ProcModel<Name, SkylakeServerModel,
|
|
CNLFeatures.Value, [
|
|
ProcIntelCNL,
|
|
FeatureHasFastGather
|
|
]>;
|
|
def : CannonlakeProc<"cannonlake">;
|
|
|
|
def ICLFeatures : ProcessorFeatures<CNLFeatures.Value, [
|
|
FeatureBITALG,
|
|
FeatureVAES,
|
|
FeatureVBMI2,
|
|
FeatureVNNI,
|
|
FeatureVPCLMULQDQ,
|
|
FeatureVPOPCNTDQ,
|
|
FeatureGFNI
|
|
]>;
|
|
|
|
class IcelakeProc<string Name> : ProcModel<Name, SkylakeServerModel,
|
|
ICLFeatures.Value, [
|
|
ProcIntelICL,
|
|
FeatureHasFastGather
|
|
]>;
|
|
def : IcelakeProc<"icelake">;
|
|
|
|
// AMD CPUs.
|
|
|
|
def : Proc<"k6", [FeatureX87, FeatureSlowUAMem16, FeatureMMX]>;
|
|
def : Proc<"k6-2", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>;
|
|
def : Proc<"k6-3", [FeatureX87, FeatureSlowUAMem16, Feature3DNow]>;
|
|
|
|
foreach P = ["athlon", "athlon-tbird"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, Feature3DNowA, FeatureSlowSHLD]>;
|
|
}
|
|
|
|
foreach P = ["athlon-4", "athlon-xp", "athlon-mp"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureSSE1,
|
|
Feature3DNowA, FeatureFXSR, FeatureSlowSHLD]>;
|
|
}
|
|
|
|
foreach P = ["k8", "opteron", "athlon64", "athlon-fx"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureSSE2, Feature3DNowA,
|
|
FeatureFXSR, Feature64Bit, FeatureSlowSHLD]>;
|
|
}
|
|
|
|
foreach P = ["k8-sse3", "opteron-sse3", "athlon64-sse3"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSlowUAMem16, FeatureSSE3, Feature3DNowA,
|
|
FeatureFXSR, FeatureCMPXCHG16B, FeatureSlowSHLD]>;
|
|
}
|
|
|
|
foreach P = ["amdfam10", "barcelona"] in {
|
|
def : Proc<P, [FeatureX87, FeatureSSE4A, Feature3DNowA, FeatureFXSR,
|
|
FeatureCMPXCHG16B, FeatureLZCNT, FeaturePOPCNT,
|
|
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,
|
|
FeatureMacroFusion
|
|
]>;
|
|
// 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,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
// 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,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
// 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,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
// Znver1
|
|
def: ProcessorModel<"znver1", Znver1Model, [
|
|
FeatureADX,
|
|
FeatureAES,
|
|
FeatureAVX2,
|
|
FeatureBMI,
|
|
FeatureBMI2,
|
|
FeatureCLFLUSHOPT,
|
|
FeatureCLZERO,
|
|
FeatureCMPXCHG16B,
|
|
FeatureF16C,
|
|
FeatureFMA,
|
|
FeatureFSGSBase,
|
|
FeatureFXSR,
|
|
FeatureFastLZCNT,
|
|
FeatureLAHFSAHF,
|
|
FeatureLZCNT,
|
|
FeatureMacroFusion,
|
|
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,
|
|
FeatureSlow3OpsLEA,
|
|
FeatureSlowIncDec,
|
|
FeatureMacroFusion
|
|
]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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];
|
|
}
|