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Update X86 feature and CPU detection #36502

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merged 5 commits into from
Jul 8, 2020
Merged

Update X86 feature and CPU detection #36502

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6fd5b82
Fix CPU feature specification on virtualized x64.
yuyichao Jul 1, 2020
8f6fe5d
Clean up old LLVM version support on x86
yuyichao Jul 1, 2020
9f83eaf
Feature clean up
yuyichao Jul 1, 2020
9ad9daa
New X86 features and detections
yuyichao Jul 1, 2020
87c609a
New X86 CPU types and detections
yuyichao Jul 1, 2020
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76 changes: 49 additions & 27 deletions src/features_x86.h
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Original file line number Diff line number Diff line change
@@ -1,11 +1,8 @@
// This file is a part of Julia. License is MIT: https://julialang.org/license

#ifdef _CPU_X86_
// avx is unusable on 32bit before LLVM 5.0 due to LLVM bug (try to encode too many registers)
#define JL_X86_AVX_MIN_VER 50000
#define JL_X86_64ONLY_VER(x) UINT32_MAX
#else
#define JL_X86_AVX_MIN_VER 0
#define JL_X86_64ONLY_VER(x) x
#endif

Expand All @@ -14,16 +11,16 @@
JL_FEATURE_DEF(sse3, 0, 0)
JL_FEATURE_DEF(pclmul, 1, 0)
JL_FEATURE_DEF(ssse3, 9, 0)
JL_FEATURE_DEF(fma, 12, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(fma, 12, 0)
JL_FEATURE_DEF(cx16, 13, JL_X86_64ONLY_VER(0)) // cx16 requires 64bit
JL_FEATURE_DEF_NAME(sse41, 19, 0, "sse4.1")
JL_FEATURE_DEF_NAME(sse42, 20, 0, "sse4.2")
JL_FEATURE_DEF(movbe, 22, 0)
JL_FEATURE_DEF(popcnt, 23, 0)
JL_FEATURE_DEF(aes, 25, 0)
JL_FEATURE_DEF(xsave, 26, 0)
JL_FEATURE_DEF(avx, 28, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(f16c, 29, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(avx, 28, 0)
JL_FEATURE_DEF(f16c, 29, 0)
JL_FEATURE_DEF(rdrnd, 30, 0)

// EAX=1: EDX
Expand All @@ -34,47 +31,66 @@ JL_FEATURE_DEF(fsgsbase, 32 * 2 + 0, 0)
// JL_FEATURE_DEF(sgx, 32 * 2 + 2, 0) // Disable for now since it's very hard to detect
JL_FEATURE_DEF(bmi, 32 * 2 + 3, 0)
// JL_FEATURE_DEF(hle, 32 * 2 + 4, 0) // Not used and gone in LLVM 5.0
JL_FEATURE_DEF(avx2, 32 * 2 + 5, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(avx2, 32 * 2 + 5, 0)
JL_FEATURE_DEF(bmi2, 32 * 2 + 8, 0)
// JL_FEATURE_DEF(invpcid, 32 * 2 + 10, 0) // Not used and gone in LLVM 5.0
// JL_FEATURE_DEF(invpcid, 32 * 2 + 10, 0) // Priviledged instruction
JL_FEATURE_DEF(rtm, 32 * 2 + 11, 0)
JL_FEATURE_DEF(mpx, 32 * 2 + 14, 0)
// Disable avx512 pre-5.0 since it can't handle address space
JL_FEATURE_DEF(avx512f, 32 * 2 + 16, 50000)
JL_FEATURE_DEF(avx512dq, 32 * 2 + 17, 50000)
// JL_FEATURE_DEF(mpx, 32 * 2 + 14, 0) // Deprecated in LLVM 10.0
JL_FEATURE_DEF(avx512f, 32 * 2 + 16, 0)
JL_FEATURE_DEF(avx512dq, 32 * 2 + 17, 0)
JL_FEATURE_DEF(rdseed, 32 * 2 + 18, 0)
JL_FEATURE_DEF(adx, 32 * 2 + 19, 0)
// JL_FEATURE_DEF(smap, 32 * 2 + 20, 0) // Not used and gone in LLVM 5.0
JL_FEATURE_DEF(avx512ifma, 32 * 2 + 21, 50000)
JL_FEATURE_DEF(avx512ifma, 32 * 2 + 21, 0)
// JL_FEATURE_DEF(pcommit, 32 * 2 + 22, 0) // Deprecated
JL_FEATURE_DEF(clflushopt, 32 * 2 + 23, 0)
JL_FEATURE_DEF(clwb, 32 * 2 + 24, 0)
JL_FEATURE_DEF(avx512pf, 32 * 2 + 26, 50000)
JL_FEATURE_DEF(avx512er, 32 * 2 + 27, 50000)
JL_FEATURE_DEF(avx512cd, 32 * 2 + 28, 50000)
JL_FEATURE_DEF(avx512pf, 32 * 2 + 26, 0)
JL_FEATURE_DEF(avx512er, 32 * 2 + 27, 0)
JL_FEATURE_DEF(avx512cd, 32 * 2 + 28, 0)
JL_FEATURE_DEF(sha, 32 * 2 + 29, 0)
JL_FEATURE_DEF(avx512bw, 32 * 2 + 30, 50000)
JL_FEATURE_DEF(avx512vl, 32 * 2 + 31, 50000)
JL_FEATURE_DEF(avx512bw, 32 * 2 + 30, 0)
JL_FEATURE_DEF(avx512vl, 32 * 2 + 31, 0)

// EAX=7,ECX=0: ECX
JL_FEATURE_DEF(prefetchwt1, 32 * 3 + 0, 0)
JL_FEATURE_DEF(avx512vbmi, 32 * 3 + 1, 50000)
JL_FEATURE_DEF(avx512vbmi, 32 * 3 + 1, 0)
JL_FEATURE_DEF(pku, 32 * 3 + 4, 0) // ospke
JL_FEATURE_DEF(avx512vpopcntdq, 32 * 3 + 14, 50000)
JL_FEATURE_DEF(waitpkg, 32 * 3 + 5, 0)
JL_FEATURE_DEF(avx512vbmi2, 32 * 3 + 6, 0)
JL_FEATURE_DEF(shstk, 32 * 3 + 7, 0)
JL_FEATURE_DEF(gfni, 32 * 3 + 8, 0)
JL_FEATURE_DEF(vaes, 32 * 3 + 9, 0)
JL_FEATURE_DEF(vpclmulqdq, 32 * 3 + 10, 0)
JL_FEATURE_DEF(avx512vnni, 32 * 3 + 11, 0)
JL_FEATURE_DEF(avx512bitalg, 32 * 3 + 12, 0)
JL_FEATURE_DEF(avx512vpopcntdq, 32 * 3 + 14, 0)
JL_FEATURE_DEF(rdpid, 32 * 3 + 22, 0)
JL_FEATURE_DEF(cldemote, 32 * 3 + 25, 0)
JL_FEATURE_DEF(movdiri, 32 * 3 + 27, 0)
JL_FEATURE_DEF(movdir64b, 32 * 3 + 28, 0)
JL_FEATURE_DEF(enqcmd, 32 * 3 + 29, 90000)

// EAX=7,ECX=0: EDX
// JL_FEATURE_DEF(avx512_4vnniw, 32 * 4 + 2, ?????)
// JL_FEATURE_DEF(avx512_4fmaps, 32 * 4 + 3, ?????)
// JL_FEATURE_DEF(avx5124vnniw, 32 * 4 + 2, ?????)
// JL_FEATURE_DEF(avx5124fmaps, 32 * 4 + 3, ?????)
JL_FEATURE_DEF(avx512vp2intersect, 32 * 4 + 8, 90000)
JL_FEATURE_DEF(serialize, 32 * 4 + 14, 110000)
JL_FEATURE_DEF(tsxldtrk, 32 * 4 + 16, 110000)
JL_FEATURE_DEF(pconfig, 32 * 4 + 18, 0)
JL_FEATURE_DEF_NAME(amx_bf16, 32 * 4 + 22, 110000, "amx-bf16")
JL_FEATURE_DEF_NAME(amx_tile, 32 * 4 + 24, 110000, "amx-tile")
JL_FEATURE_DEF_NAME(amx_int8, 32 * 4 + 25, 110000, "amx-int8")

// EAX=0x80000001: ECX
// ignore sahf on 32bit x86 since it is required
JL_FEATURE_DEF(sahf, 32 * 5 + 0, JL_X86_64ONLY_VER(0))
JL_FEATURE_DEF(lzcnt, 32 * 5 + 5, 0)
JL_FEATURE_DEF(sse4a, 32 * 5 + 6, 0)
JL_FEATURE_DEF(prfchw, 32 * 5 + 8, 0)
JL_FEATURE_DEF(xop, 32 * 5 + 11, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(lwp, 32 * 5 + 15, 50000)
JL_FEATURE_DEF(fma4, 32 * 5 + 16, JL_X86_AVX_MIN_VER)
JL_FEATURE_DEF(xop, 32 * 5 + 11, 0)
JL_FEATURE_DEF(lwp, 32 * 5 + 15, 0)
JL_FEATURE_DEF(fma4, 32 * 5 + 16, 0)
JL_FEATURE_DEF(tbm, 32 * 5 + 21, 0)
JL_FEATURE_DEF(mwaitx, 32 * 5 + 29, 0)

Expand All @@ -88,7 +104,13 @@ JL_FEATURE_DEF(xsavec, 32 * 7 + 1, 0)
JL_FEATURE_DEF(xsaves, 32 * 7 + 3, 0)

// EAX=0x80000008: EBX
JL_FEATURE_DEF(clzero, 32 * 8 + 0, 50000)
JL_FEATURE_DEF(clzero, 32 * 8 + 0, 0)
JL_FEATURE_DEF(wbnoinvd, 32 * 8 + 9, 0)

// EAX=7,ECX=1: EAX
JL_FEATURE_DEF(avx512bf16, 32 * 9 + 5, 90000)

// EAX=0x14,ECX=0: EBX
JL_FEATURE_DEF(ptwrite, 32 * 10 + 4, 0)

#undef JL_X86_AVX_MIN_VER
#undef JL_X86_64ONLY_VER
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