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X86.cpp
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X86.cpp
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//===--- X86.cpp - Implement X86 target feature support -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements X86 TargetInfo objects.
//
//===----------------------------------------------------------------------===//
#include "X86.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/TargetBuiltins.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/TargetParser.h"
namespace clang {
namespace targets {
const Builtin::Info BuiltinInfoX86[] = {
#define BUILTIN(ID, TYPE, ATTRS) \
{#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr},
#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \
{#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE},
#define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE) \
{#ID, TYPE, ATTRS, HEADER, LANGS, FEATURE},
#include "clang/Basic/BuiltinsX86.def"
#define BUILTIN(ID, TYPE, ATTRS) \
{#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr},
#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE) \
{#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE},
#define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE) \
{#ID, TYPE, ATTRS, HEADER, LANGS, FEATURE},
#include "clang/Basic/BuiltinsX86_64.def"
};
static const char *const GCCRegNames[] = {
"ax", "dx", "cx", "bx", "si", "di", "bp", "sp",
"st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)",
"argp", "flags", "fpcr", "fpsr", "dirflag", "frame", "xmm0", "xmm1",
"xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7", "mm0", "mm1",
"mm2", "mm3", "mm4", "mm5", "mm6", "mm7", "r8", "r9",
"r10", "r11", "r12", "r13", "r14", "r15", "xmm8", "xmm9",
"xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15", "ymm0", "ymm1",
"ymm2", "ymm3", "ymm4", "ymm5", "ymm6", "ymm7", "ymm8", "ymm9",
"ymm10", "ymm11", "ymm12", "ymm13", "ymm14", "ymm15", "xmm16", "xmm17",
"xmm18", "xmm19", "xmm20", "xmm21", "xmm22", "xmm23", "xmm24", "xmm25",
"xmm26", "xmm27", "xmm28", "xmm29", "xmm30", "xmm31", "ymm16", "ymm17",
"ymm18", "ymm19", "ymm20", "ymm21", "ymm22", "ymm23", "ymm24", "ymm25",
"ymm26", "ymm27", "ymm28", "ymm29", "ymm30", "ymm31", "zmm0", "zmm1",
"zmm2", "zmm3", "zmm4", "zmm5", "zmm6", "zmm7", "zmm8", "zmm9",
"zmm10", "zmm11", "zmm12", "zmm13", "zmm14", "zmm15", "zmm16", "zmm17",
"zmm18", "zmm19", "zmm20", "zmm21", "zmm22", "zmm23", "zmm24", "zmm25",
"zmm26", "zmm27", "zmm28", "zmm29", "zmm30", "zmm31", "k0", "k1",
"k2", "k3", "k4", "k5", "k6", "k7",
"cr0", "cr2", "cr3", "cr4", "cr8",
"dr0", "dr1", "dr2", "dr3", "dr6", "dr7",
"bnd0", "bnd1", "bnd2", "bnd3",
};
const TargetInfo::AddlRegName AddlRegNames[] = {
{{"al", "ah", "eax", "rax"}, 0},
{{"bl", "bh", "ebx", "rbx"}, 3},
{{"cl", "ch", "ecx", "rcx"}, 2},
{{"dl", "dh", "edx", "rdx"}, 1},
{{"esi", "rsi"}, 4},
{{"edi", "rdi"}, 5},
{{"esp", "rsp"}, 7},
{{"ebp", "rbp"}, 6},
{{"r8d", "r8w", "r8b"}, 38},
{{"r9d", "r9w", "r9b"}, 39},
{{"r10d", "r10w", "r10b"}, 40},
{{"r11d", "r11w", "r11b"}, 41},
{{"r12d", "r12w", "r12b"}, 42},
{{"r13d", "r13w", "r13b"}, 43},
{{"r14d", "r14w", "r14b"}, 44},
{{"r15d", "r15w", "r15b"}, 45},
};
} // namespace targets
} // namespace clang
using namespace clang;
using namespace clang::targets;
bool X86TargetInfo::setFPMath(StringRef Name) {
if (Name == "387") {
FPMath = FP_387;
return true;
}
if (Name == "sse") {
FPMath = FP_SSE;
return true;
}
return false;
}
bool X86TargetInfo::checkCFProtectionReturnSupported(
DiagnosticsEngine &Diags) const {
if (HasSHSTK)
return true;
Diags.Report(diag::err_opt_not_valid_without_opt) << "cf-protection=return"
<< "-mshstk";
return false;
}
bool X86TargetInfo::checkCFProtectionBranchSupported(
DiagnosticsEngine &Diags) const {
if (HasIBT)
return true;
Diags.Report(diag::err_opt_not_valid_without_opt) << "cf-protection=branch"
<< "-mibt";
return false;
}
bool X86TargetInfo::initFeatureMap(
llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, StringRef CPU,
const std::vector<std::string> &FeaturesVec) const {
// FIXME: This *really* should not be here.
// X86_64 always has SSE2.
if (getTriple().getArch() == llvm::Triple::x86_64)
setFeatureEnabledImpl(Features, "sse2", true);
const CPUKind Kind = getCPUKind(CPU);
// Enable X87 for all X86 processors but Lakemont.
if (Kind != CK_Lakemont)
setFeatureEnabledImpl(Features, "x87", true);
switch (Kind) {
case CK_Generic:
case CK_i386:
case CK_i486:
case CK_i586:
case CK_Pentium:
case CK_PentiumPro:
case CK_Lakemont:
break;
case CK_PentiumMMX:
case CK_Pentium2:
case CK_K6:
case CK_WinChipC6:
setFeatureEnabledImpl(Features, "mmx", true);
break;
case CK_IcelakeServer:
setFeatureEnabledImpl(Features, "pconfig", true);
setFeatureEnabledImpl(Features, "wbnoinvd", true);
LLVM_FALLTHROUGH;
case CK_IcelakeClient:
setFeatureEnabledImpl(Features, "vaes", true);
setFeatureEnabledImpl(Features, "gfni", true);
setFeatureEnabledImpl(Features, "vpclmulqdq", true);
setFeatureEnabledImpl(Features, "avx512bitalg", true);
setFeatureEnabledImpl(Features, "avx512vnni", true);
setFeatureEnabledImpl(Features, "avx512vbmi2", true);
setFeatureEnabledImpl(Features, "avx512vpopcntdq", true);
setFeatureEnabledImpl(Features, "rdpid", true);
LLVM_FALLTHROUGH;
case CK_Cannonlake:
setFeatureEnabledImpl(Features, "avx512ifma", true);
setFeatureEnabledImpl(Features, "avx512vbmi", true);
setFeatureEnabledImpl(Features, "sha", true);
LLVM_FALLTHROUGH;
case CK_SkylakeServer:
setFeatureEnabledImpl(Features, "avx512f", true);
setFeatureEnabledImpl(Features, "avx512cd", true);
setFeatureEnabledImpl(Features, "avx512dq", true);
setFeatureEnabledImpl(Features, "avx512bw", true);
setFeatureEnabledImpl(Features, "avx512vl", true);
setFeatureEnabledImpl(Features, "pku", true);
if (Kind != CK_Cannonlake) // CNL inherits all SKX features, except CLWB
setFeatureEnabledImpl(Features, "clwb", true);
LLVM_FALLTHROUGH;
case CK_SkylakeClient:
setFeatureEnabledImpl(Features, "xsavec", true);
setFeatureEnabledImpl(Features, "xsaves", true);
setFeatureEnabledImpl(Features, "mpx", true);
if (Kind != CK_SkylakeServer) // SKX inherits all SKL features, except SGX
setFeatureEnabledImpl(Features, "sgx", true);
setFeatureEnabledImpl(Features, "clflushopt", true);
setFeatureEnabledImpl(Features, "rtm", true);
LLVM_FALLTHROUGH;
case CK_Broadwell:
setFeatureEnabledImpl(Features, "rdseed", true);
setFeatureEnabledImpl(Features, "adx", true);
setFeatureEnabledImpl(Features, "prfchw", true);
LLVM_FALLTHROUGH;
case CK_Haswell:
setFeatureEnabledImpl(Features, "avx2", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "bmi", true);
setFeatureEnabledImpl(Features, "bmi2", true);
setFeatureEnabledImpl(Features, "fma", true);
setFeatureEnabledImpl(Features, "movbe", true);
LLVM_FALLTHROUGH;
case CK_IvyBridge:
setFeatureEnabledImpl(Features, "rdrnd", true);
setFeatureEnabledImpl(Features, "f16c", true);
setFeatureEnabledImpl(Features, "fsgsbase", true);
LLVM_FALLTHROUGH;
case CK_SandyBridge:
setFeatureEnabledImpl(Features, "avx", true);
setFeatureEnabledImpl(Features, "xsave", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
LLVM_FALLTHROUGH;
case CK_Westmere:
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "pclmul", true);
LLVM_FALLTHROUGH;
case CK_Nehalem:
setFeatureEnabledImpl(Features, "sse4.2", true);
LLVM_FALLTHROUGH;
case CK_Penryn:
setFeatureEnabledImpl(Features, "sse4.1", true);
LLVM_FALLTHROUGH;
case CK_Core2:
setFeatureEnabledImpl(Features, "ssse3", true);
setFeatureEnabledImpl(Features, "sahf", true);
LLVM_FALLTHROUGH;
case CK_Yonah:
case CK_Prescott:
case CK_Nocona:
setFeatureEnabledImpl(Features, "sse3", true);
setFeatureEnabledImpl(Features, "cx16", true);
LLVM_FALLTHROUGH;
case CK_PentiumM:
case CK_Pentium4:
case CK_x86_64:
setFeatureEnabledImpl(Features, "sse2", true);
LLVM_FALLTHROUGH;
case CK_Pentium3:
case CK_C3_2:
setFeatureEnabledImpl(Features, "sse", true);
setFeatureEnabledImpl(Features, "fxsr", true);
break;
case CK_Tremont:
setFeatureEnabledImpl(Features, "cldemote", true);
setFeatureEnabledImpl(Features, "movdiri", true);
setFeatureEnabledImpl(Features, "movdir64b", true);
setFeatureEnabledImpl(Features, "gfni", true);
setFeatureEnabledImpl(Features, "waitpkg", true);
LLVM_FALLTHROUGH;
case CK_GoldmontPlus:
setFeatureEnabledImpl(Features, "rdpid", true);
setFeatureEnabledImpl(Features, "sgx", true);
LLVM_FALLTHROUGH;
case CK_Goldmont:
setFeatureEnabledImpl(Features, "sha", true);
setFeatureEnabledImpl(Features, "rdseed", true);
setFeatureEnabledImpl(Features, "xsave", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
setFeatureEnabledImpl(Features, "xsavec", true);
setFeatureEnabledImpl(Features, "xsaves", true);
setFeatureEnabledImpl(Features, "clflushopt", true);
setFeatureEnabledImpl(Features, "mpx", true);
setFeatureEnabledImpl(Features, "fsgsbase", true);
LLVM_FALLTHROUGH;
case CK_Silvermont:
setFeatureEnabledImpl(Features, "rdrnd", true);
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "pclmul", true);
setFeatureEnabledImpl(Features, "sse4.2", true);
setFeatureEnabledImpl(Features, "prfchw", true);
LLVM_FALLTHROUGH;
case CK_Bonnell:
setFeatureEnabledImpl(Features, "movbe", true);
setFeatureEnabledImpl(Features, "ssse3", true);
setFeatureEnabledImpl(Features, "fxsr", true);
setFeatureEnabledImpl(Features, "cx16", true);
setFeatureEnabledImpl(Features, "sahf", true);
break;
case CK_KNM:
// TODO: Add avx5124fmaps/avx5124vnniw.
setFeatureEnabledImpl(Features, "avx512vpopcntdq", true);
LLVM_FALLTHROUGH;
case CK_KNL:
setFeatureEnabledImpl(Features, "avx512f", true);
setFeatureEnabledImpl(Features, "avx512cd", true);
setFeatureEnabledImpl(Features, "avx512er", true);
setFeatureEnabledImpl(Features, "avx512pf", true);
setFeatureEnabledImpl(Features, "prfchw", true);
setFeatureEnabledImpl(Features, "prefetchwt1", true);
setFeatureEnabledImpl(Features, "fxsr", true);
setFeatureEnabledImpl(Features, "rdseed", true);
setFeatureEnabledImpl(Features, "adx", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "bmi", true);
setFeatureEnabledImpl(Features, "bmi2", true);
setFeatureEnabledImpl(Features, "rtm", true);
setFeatureEnabledImpl(Features, "fma", true);
setFeatureEnabledImpl(Features, "rdrnd", true);
setFeatureEnabledImpl(Features, "f16c", true);
setFeatureEnabledImpl(Features, "fsgsbase", true);
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "pclmul", true);
setFeatureEnabledImpl(Features, "cx16", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
setFeatureEnabledImpl(Features, "xsave", true);
setFeatureEnabledImpl(Features, "movbe", true);
setFeatureEnabledImpl(Features, "sahf", true);
break;
case CK_K6_2:
case CK_K6_3:
case CK_WinChip2:
case CK_C3:
setFeatureEnabledImpl(Features, "3dnow", true);
break;
case CK_AMDFAM10:
setFeatureEnabledImpl(Features, "sse4a", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "popcnt", true);
setFeatureEnabledImpl(Features, "sahf", true);
LLVM_FALLTHROUGH;
case CK_K8SSE3:
setFeatureEnabledImpl(Features, "sse3", true);
LLVM_FALLTHROUGH;
case CK_K8:
setFeatureEnabledImpl(Features, "sse2", true);
LLVM_FALLTHROUGH;
case CK_AthlonXP:
setFeatureEnabledImpl(Features, "sse", true);
setFeatureEnabledImpl(Features, "fxsr", true);
LLVM_FALLTHROUGH;
case CK_Athlon:
case CK_Geode:
setFeatureEnabledImpl(Features, "3dnowa", true);
break;
case CK_BTVER2:
setFeatureEnabledImpl(Features, "avx", true);
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "pclmul", true);
setFeatureEnabledImpl(Features, "bmi", true);
setFeatureEnabledImpl(Features, "f16c", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
setFeatureEnabledImpl(Features, "movbe", true);
LLVM_FALLTHROUGH;
case CK_BTVER1:
setFeatureEnabledImpl(Features, "ssse3", true);
setFeatureEnabledImpl(Features, "sse4a", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "popcnt", true);
setFeatureEnabledImpl(Features, "prfchw", true);
setFeatureEnabledImpl(Features, "cx16", true);
setFeatureEnabledImpl(Features, "fxsr", true);
setFeatureEnabledImpl(Features, "sahf", true);
break;
case CK_ZNVER1:
setFeatureEnabledImpl(Features, "adx", true);
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "avx2", true);
setFeatureEnabledImpl(Features, "bmi", true);
setFeatureEnabledImpl(Features, "bmi2", true);
setFeatureEnabledImpl(Features, "clflushopt", true);
setFeatureEnabledImpl(Features, "clzero", true);
setFeatureEnabledImpl(Features, "cx16", true);
setFeatureEnabledImpl(Features, "f16c", true);
setFeatureEnabledImpl(Features, "fma", true);
setFeatureEnabledImpl(Features, "fsgsbase", true);
setFeatureEnabledImpl(Features, "fxsr", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "mwaitx", true);
setFeatureEnabledImpl(Features, "movbe", true);
setFeatureEnabledImpl(Features, "pclmul", true);
setFeatureEnabledImpl(Features, "popcnt", true);
setFeatureEnabledImpl(Features, "prfchw", true);
setFeatureEnabledImpl(Features, "rdrnd", true);
setFeatureEnabledImpl(Features, "rdseed", true);
setFeatureEnabledImpl(Features, "sahf", true);
setFeatureEnabledImpl(Features, "sha", true);
setFeatureEnabledImpl(Features, "sse4a", true);
setFeatureEnabledImpl(Features, "xsave", true);
setFeatureEnabledImpl(Features, "xsavec", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
setFeatureEnabledImpl(Features, "xsaves", true);
break;
case CK_BDVER4:
setFeatureEnabledImpl(Features, "avx2", true);
setFeatureEnabledImpl(Features, "bmi2", true);
setFeatureEnabledImpl(Features, "mwaitx", true);
LLVM_FALLTHROUGH;
case CK_BDVER3:
setFeatureEnabledImpl(Features, "fsgsbase", true);
setFeatureEnabledImpl(Features, "xsaveopt", true);
LLVM_FALLTHROUGH;
case CK_BDVER2:
setFeatureEnabledImpl(Features, "bmi", true);
setFeatureEnabledImpl(Features, "fma", true);
setFeatureEnabledImpl(Features, "f16c", true);
setFeatureEnabledImpl(Features, "tbm", true);
LLVM_FALLTHROUGH;
case CK_BDVER1:
// xop implies avx, sse4a and fma4.
setFeatureEnabledImpl(Features, "xop", true);
setFeatureEnabledImpl(Features, "lwp", true);
setFeatureEnabledImpl(Features, "lzcnt", true);
setFeatureEnabledImpl(Features, "aes", true);
setFeatureEnabledImpl(Features, "pclmul", true);
setFeatureEnabledImpl(Features, "prfchw", true);
setFeatureEnabledImpl(Features, "cx16", true);
setFeatureEnabledImpl(Features, "fxsr", true);
setFeatureEnabledImpl(Features, "xsave", true);
setFeatureEnabledImpl(Features, "sahf", true);
break;
}
if (!TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec))
return false;
// Can't do this earlier because we need to be able to explicitly enable
// or disable these features and the things that they depend upon.
// Enable popcnt if sse4.2 is enabled and popcnt is not explicitly disabled.
auto I = Features.find("sse4.2");
if (I != Features.end() && I->getValue() &&
std::find(FeaturesVec.begin(), FeaturesVec.end(), "-popcnt") ==
FeaturesVec.end())
Features["popcnt"] = true;
// Enable prfchw if 3DNow! is enabled and prfchw is not explicitly disabled.
I = Features.find("3dnow");
if (I != Features.end() && I->getValue() &&
std::find(FeaturesVec.begin(), FeaturesVec.end(), "-prfchw") ==
FeaturesVec.end())
Features["prfchw"] = true;
// Additionally, if SSE is enabled and mmx is not explicitly disabled,
// then enable MMX.
I = Features.find("sse");
if (I != Features.end() && I->getValue() &&
std::find(FeaturesVec.begin(), FeaturesVec.end(), "-mmx") ==
FeaturesVec.end())
Features["mmx"] = true;
return true;
}
void X86TargetInfo::setSSELevel(llvm::StringMap<bool> &Features,
X86SSEEnum Level, bool Enabled) {
if (Enabled) {
switch (Level) {
case AVX512F:
Features["avx512f"] = Features["fma"] = Features["f16c"] = true;
LLVM_FALLTHROUGH;
case AVX2:
Features["avx2"] = true;
LLVM_FALLTHROUGH;
case AVX:
Features["avx"] = true;
Features["xsave"] = true;
LLVM_FALLTHROUGH;
case SSE42:
Features["sse4.2"] = true;
LLVM_FALLTHROUGH;
case SSE41:
Features["sse4.1"] = true;
LLVM_FALLTHROUGH;
case SSSE3:
Features["ssse3"] = true;
LLVM_FALLTHROUGH;
case SSE3:
Features["sse3"] = true;
LLVM_FALLTHROUGH;
case SSE2:
Features["sse2"] = true;
LLVM_FALLTHROUGH;
case SSE1:
Features["sse"] = true;
LLVM_FALLTHROUGH;
case NoSSE:
break;
}
return;
}
switch (Level) {
case NoSSE:
case SSE1:
Features["sse"] = false;
LLVM_FALLTHROUGH;
case SSE2:
Features["sse2"] = Features["pclmul"] = Features["aes"] = Features["sha"] =
Features["gfni"] = false;
LLVM_FALLTHROUGH;
case SSE3:
Features["sse3"] = false;
setXOPLevel(Features, NoXOP, false);
LLVM_FALLTHROUGH;
case SSSE3:
Features["ssse3"] = false;
LLVM_FALLTHROUGH;
case SSE41:
Features["sse4.1"] = false;
LLVM_FALLTHROUGH;
case SSE42:
Features["sse4.2"] = false;
LLVM_FALLTHROUGH;
case AVX:
Features["fma"] = Features["avx"] = Features["f16c"] = Features["xsave"] =
Features["xsaveopt"] = Features["vaes"] = Features["vpclmulqdq"] = false;
setXOPLevel(Features, FMA4, false);
LLVM_FALLTHROUGH;
case AVX2:
Features["avx2"] = false;
LLVM_FALLTHROUGH;
case AVX512F:
Features["avx512f"] = Features["avx512cd"] = Features["avx512er"] =
Features["avx512pf"] = Features["avx512dq"] = Features["avx512bw"] =
Features["avx512vl"] = Features["avx512vbmi"] =
Features["avx512ifma"] = Features["avx512vpopcntdq"] =
Features["avx512bitalg"] = Features["avx512vnni"] =
Features["avx512vbmi2"] = false;
break;
}
}
void X86TargetInfo::setMMXLevel(llvm::StringMap<bool> &Features,
MMX3DNowEnum Level, bool Enabled) {
if (Enabled) {
switch (Level) {
case AMD3DNowAthlon:
Features["3dnowa"] = true;
LLVM_FALLTHROUGH;
case AMD3DNow:
Features["3dnow"] = true;
LLVM_FALLTHROUGH;
case MMX:
Features["mmx"] = true;
LLVM_FALLTHROUGH;
case NoMMX3DNow:
break;
}
return;
}
switch (Level) {
case NoMMX3DNow:
case MMX:
Features["mmx"] = false;
LLVM_FALLTHROUGH;
case AMD3DNow:
Features["3dnow"] = false;
LLVM_FALLTHROUGH;
case AMD3DNowAthlon:
Features["3dnowa"] = false;
break;
}
}
void X86TargetInfo::setXOPLevel(llvm::StringMap<bool> &Features, XOPEnum Level,
bool Enabled) {
if (Enabled) {
switch (Level) {
case XOP:
Features["xop"] = true;
LLVM_FALLTHROUGH;
case FMA4:
Features["fma4"] = true;
setSSELevel(Features, AVX, true);
LLVM_FALLTHROUGH;
case SSE4A:
Features["sse4a"] = true;
setSSELevel(Features, SSE3, true);
LLVM_FALLTHROUGH;
case NoXOP:
break;
}
return;
}
switch (Level) {
case NoXOP:
case SSE4A:
Features["sse4a"] = false;
LLVM_FALLTHROUGH;
case FMA4:
Features["fma4"] = false;
LLVM_FALLTHROUGH;
case XOP:
Features["xop"] = false;
break;
}
}
void X86TargetInfo::setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
StringRef Name, bool Enabled) {
// This is a bit of a hack to deal with the sse4 target feature when used
// as part of the target attribute. We handle sse4 correctly everywhere
// else. See below for more information on how we handle the sse4 options.
if (Name != "sse4")
Features[Name] = Enabled;
if (Name == "mmx") {
setMMXLevel(Features, MMX, Enabled);
} else if (Name == "sse") {
setSSELevel(Features, SSE1, Enabled);
} else if (Name == "sse2") {
setSSELevel(Features, SSE2, Enabled);
} else if (Name == "sse3") {
setSSELevel(Features, SSE3, Enabled);
} else if (Name == "ssse3") {
setSSELevel(Features, SSSE3, Enabled);
} else if (Name == "sse4.2") {
setSSELevel(Features, SSE42, Enabled);
} else if (Name == "sse4.1") {
setSSELevel(Features, SSE41, Enabled);
} else if (Name == "3dnow") {
setMMXLevel(Features, AMD3DNow, Enabled);
} else if (Name == "3dnowa") {
setMMXLevel(Features, AMD3DNowAthlon, Enabled);
} else if (Name == "aes") {
if (Enabled)
setSSELevel(Features, SSE2, Enabled);
else
Features["vaes"] = false;
} else if (Name == "vaes") {
if (Enabled) {
setSSELevel(Features, AVX, Enabled);
Features["aes"] = true;
}
} else if (Name == "pclmul") {
if (Enabled)
setSSELevel(Features, SSE2, Enabled);
else
Features["vpclmulqdq"] = false;
} else if (Name == "vpclmulqdq") {
if (Enabled) {
setSSELevel(Features, AVX, Enabled);
Features["pclmul"] = true;
}
} else if (Name == "gfni") {
if (Enabled)
setSSELevel(Features, SSE2, Enabled);
} else if (Name == "avx") {
setSSELevel(Features, AVX, Enabled);
} else if (Name == "avx2") {
setSSELevel(Features, AVX2, Enabled);
} else if (Name == "avx512f") {
setSSELevel(Features, AVX512F, Enabled);
} else if (Name == "avx512cd" || Name == "avx512er" || Name == "avx512pf" ||
Name == "avx512dq" || Name == "avx512bw" || Name == "avx512vl" ||
Name == "avx512vbmi" || Name == "avx512ifma" ||
Name == "avx512vpopcntdq" || Name == "avx512bitalg" ||
Name == "avx512vnni" || Name == "avx512vbmi2") {
if (Enabled)
setSSELevel(Features, AVX512F, Enabled);
// Enable BWI instruction if VBMI/VBMI2/BITALG is being enabled.
if ((Name.startswith("avx512vbmi") || Name == "avx512bitalg") && Enabled)
Features["avx512bw"] = true;
// Also disable VBMI/VBMI2/BITALG if BWI is being disabled.
if (Name == "avx512bw" && !Enabled)
Features["avx512vbmi"] = Features["avx512vbmi2"] =
Features["avx512bitalg"] = false;
} else if (Name == "fma") {
if (Enabled)
setSSELevel(Features, AVX, Enabled);
else
setSSELevel(Features, AVX512F, Enabled);
} else if (Name == "fma4") {
setXOPLevel(Features, FMA4, Enabled);
} else if (Name == "xop") {
setXOPLevel(Features, XOP, Enabled);
} else if (Name == "sse4a") {
setXOPLevel(Features, SSE4A, Enabled);
} else if (Name == "f16c") {
if (Enabled)
setSSELevel(Features, AVX, Enabled);
else
setSSELevel(Features, AVX512F, Enabled);
} else if (Name == "sha") {
if (Enabled)
setSSELevel(Features, SSE2, Enabled);
} else if (Name == "sse4") {
// We can get here via the __target__ attribute since that's not controlled
// via the -msse4/-mno-sse4 command line alias. Handle this the same way
// here - turn on the sse4.2 if enabled, turn off the sse4.1 level if
// disabled.
if (Enabled)
setSSELevel(Features, SSE42, Enabled);
else
setSSELevel(Features, SSE41, Enabled);
} else if (Name == "xsave") {
if (!Enabled)
Features["xsaveopt"] = false;
} else if (Name == "xsaveopt" || Name == "xsavec" || Name == "xsaves") {
if (Enabled)
Features["xsave"] = true;
}
}
/// handleTargetFeatures - Perform initialization based on the user
/// configured set of features.
bool X86TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
DiagnosticsEngine &Diags) {
for (const auto &Feature : Features) {
if (Feature[0] != '+')
continue;
if (Feature == "+aes") {
HasAES = true;
} else if (Feature == "+vaes") {
HasVAES = true;
} else if (Feature == "+pclmul") {
HasPCLMUL = true;
} else if (Feature == "+vpclmulqdq") {
HasVPCLMULQDQ = true;
} else if (Feature == "+lzcnt") {
HasLZCNT = true;
} else if (Feature == "+rdrnd") {
HasRDRND = true;
} else if (Feature == "+fsgsbase") {
HasFSGSBASE = true;
} else if (Feature == "+bmi") {
HasBMI = true;
} else if (Feature == "+bmi2") {
HasBMI2 = true;
} else if (Feature == "+popcnt") {
HasPOPCNT = true;
} else if (Feature == "+rtm") {
HasRTM = true;
} else if (Feature == "+prfchw") {
HasPRFCHW = true;
} else if (Feature == "+rdseed") {
HasRDSEED = true;
} else if (Feature == "+adx") {
HasADX = true;
} else if (Feature == "+tbm") {
HasTBM = true;
} else if (Feature == "+lwp") {
HasLWP = true;
} else if (Feature == "+fma") {
HasFMA = true;
} else if (Feature == "+f16c") {
HasF16C = true;
} else if (Feature == "+gfni") {
HasGFNI = true;
} else if (Feature == "+avx512cd") {
HasAVX512CD = true;
} else if (Feature == "+avx512vpopcntdq") {
HasAVX512VPOPCNTDQ = true;
} else if (Feature == "+avx512vnni") {
HasAVX512VNNI = true;
} else if (Feature == "+avx512er") {
HasAVX512ER = true;
} else if (Feature == "+avx512pf") {
HasAVX512PF = true;
} else if (Feature == "+avx512dq") {
HasAVX512DQ = true;
} else if (Feature == "+avx512bitalg") {
HasAVX512BITALG = true;
} else if (Feature == "+avx512bw") {
HasAVX512BW = true;
} else if (Feature == "+avx512vl") {
HasAVX512VL = true;
} else if (Feature == "+avx512vbmi") {
HasAVX512VBMI = true;
} else if (Feature == "+avx512vbmi2") {
HasAVX512VBMI2 = true;
} else if (Feature == "+avx512ifma") {
HasAVX512IFMA = true;
} else if (Feature == "+sha") {
HasSHA = true;
} else if (Feature == "+mpx") {
HasMPX = true;
} else if (Feature == "+shstk") {
HasSHSTK = true;
} else if (Feature == "+ibt") {
HasIBT = true;
} else if (Feature == "+movbe") {
HasMOVBE = true;
} else if (Feature == "+sgx") {
HasSGX = true;
} else if (Feature == "+cx16") {
HasCX16 = true;
} else if (Feature == "+fxsr") {
HasFXSR = true;
} else if (Feature == "+xsave") {
HasXSAVE = true;
} else if (Feature == "+xsaveopt") {
HasXSAVEOPT = true;
} else if (Feature == "+xsavec") {
HasXSAVEC = true;
} else if (Feature == "+xsaves") {
HasXSAVES = true;
} else if (Feature == "+mwaitx") {
HasMWAITX = true;
} else if (Feature == "+pku") {
HasPKU = true;
} else if (Feature == "+clflushopt") {
HasCLFLUSHOPT = true;
} else if (Feature == "+clwb") {
HasCLWB = true;
} else if (Feature == "+wbnoinvd") {
HasWBNOINVD = true;
} else if (Feature == "+prefetchwt1") {
HasPREFETCHWT1 = true;
} else if (Feature == "+clzero") {
HasCLZERO = true;
} else if (Feature == "+cldemote") {
HasCLDEMOTE = true;
} else if (Feature == "+rdpid") {
HasRDPID = true;
} else if (Feature == "+retpoline") {
HasRetpoline = true;
} else if (Feature == "+retpoline-external-thunk") {
HasRetpolineExternalThunk = true;
} else if (Feature == "+sahf") {
HasLAHFSAHF = true;
} else if (Feature == "+waitpkg") {
HasWAITPKG = true;
} else if (Feature == "+movdiri") {
HasMOVDIRI = true;
} else if (Feature == "+movdir64b") {
HasMOVDIR64B = true;
} else if (Feature == "+pconfig") {
HasPCONFIG = true;
}
X86SSEEnum Level = llvm::StringSwitch<X86SSEEnum>(Feature)
.Case("+avx512f", AVX512F)
.Case("+avx2", AVX2)
.Case("+avx", AVX)
.Case("+sse4.2", SSE42)
.Case("+sse4.1", SSE41)
.Case("+ssse3", SSSE3)
.Case("+sse3", SSE3)
.Case("+sse2", SSE2)
.Case("+sse", SSE1)
.Default(NoSSE);
SSELevel = std::max(SSELevel, Level);
MMX3DNowEnum ThreeDNowLevel = llvm::StringSwitch<MMX3DNowEnum>(Feature)
.Case("+3dnowa", AMD3DNowAthlon)
.Case("+3dnow", AMD3DNow)
.Case("+mmx", MMX)
.Default(NoMMX3DNow);
MMX3DNowLevel = std::max(MMX3DNowLevel, ThreeDNowLevel);
XOPEnum XLevel = llvm::StringSwitch<XOPEnum>(Feature)
.Case("+xop", XOP)
.Case("+fma4", FMA4)
.Case("+sse4a", SSE4A)
.Default(NoXOP);
XOPLevel = std::max(XOPLevel, XLevel);
}
// LLVM doesn't have a separate switch for fpmath, so only accept it if it
// matches the selected sse level.
if ((FPMath == FP_SSE && SSELevel < SSE1) ||
(FPMath == FP_387 && SSELevel >= SSE1)) {
Diags.Report(diag::err_target_unsupported_fpmath)
<< (FPMath == FP_SSE ? "sse" : "387");
return false;
}
SimdDefaultAlign =
hasFeature("avx512f") ? 512 : hasFeature("avx") ? 256 : 128;
return true;
}
/// X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro
/// definitions for this particular subtarget.
void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const {
// Target identification.
if (getTriple().getArch() == llvm::Triple::x86_64) {
Builder.defineMacro("__amd64__");
Builder.defineMacro("__amd64");
Builder.defineMacro("__x86_64");
Builder.defineMacro("__x86_64__");
if (getTriple().getArchName() == "x86_64h") {
Builder.defineMacro("__x86_64h");
Builder.defineMacro("__x86_64h__");
}
} else {
DefineStd(Builder, "i386", Opts);
}
// Subtarget options.
// FIXME: We are hard-coding the tune parameters based on the CPU, but they
// truly should be based on -mtune options.
switch (CPU) {
case CK_Generic:
break;
case CK_i386:
// The rest are coming from the i386 define above.
Builder.defineMacro("__tune_i386__");
break;
case CK_i486:
case CK_WinChipC6:
case CK_WinChip2:
case CK_C3:
defineCPUMacros(Builder, "i486");
break;
case CK_PentiumMMX:
Builder.defineMacro("__pentium_mmx__");
Builder.defineMacro("__tune_pentium_mmx__");
LLVM_FALLTHROUGH;
case CK_i586:
case CK_Pentium:
defineCPUMacros(Builder, "i586");
defineCPUMacros(Builder, "pentium");
break;
case CK_Pentium3:
case CK_PentiumM:
Builder.defineMacro("__tune_pentium3__");
LLVM_FALLTHROUGH;
case CK_Pentium2:
case CK_C3_2:
Builder.defineMacro("__tune_pentium2__");
LLVM_FALLTHROUGH;
case CK_PentiumPro:
defineCPUMacros(Builder, "i686");
defineCPUMacros(Builder, "pentiumpro");
break;
case CK_Pentium4:
defineCPUMacros(Builder, "pentium4");
break;
case CK_Yonah:
case CK_Prescott:
case CK_Nocona:
defineCPUMacros(Builder, "nocona");
break;
case CK_Core2:
case CK_Penryn:
defineCPUMacros(Builder, "core2");
break;
case CK_Bonnell:
defineCPUMacros(Builder, "atom");
break;
case CK_Silvermont:
defineCPUMacros(Builder, "slm");
break;
case CK_Goldmont:
defineCPUMacros(Builder, "goldmont");
break;
case CK_GoldmontPlus:
defineCPUMacros(Builder, "goldmont_plus");
break;
case CK_Tremont:
defineCPUMacros(Builder, "tremont");
break;
case CK_Nehalem:
case CK_Westmere:
case CK_SandyBridge:
case CK_IvyBridge:
case CK_Haswell:
case CK_Broadwell:
case CK_SkylakeClient:
case CK_SkylakeServer:
case CK_Cannonlake:
case CK_IcelakeClient:
case CK_IcelakeServer:
// FIXME: Historically, we defined this legacy name, it would be nice to
// remove it at some point. We've never exposed fine-grained names for
// recent primary x86 CPUs, and we should keep it that way.
defineCPUMacros(Builder, "corei7");
break;
case CK_KNL:
defineCPUMacros(Builder, "knl");
break;
case CK_KNM:
break;
case CK_Lakemont:
defineCPUMacros(Builder, "i586", /*Tuning*/false);
defineCPUMacros(Builder, "pentium", /*Tuning*/false);
Builder.defineMacro("__tune_lakemont__");
break;
case CK_K6_2:
Builder.defineMacro("__k6_2__");
Builder.defineMacro("__tune_k6_2__");
LLVM_FALLTHROUGH;
case CK_K6_3:
if (CPU != CK_K6_2) { // In case of fallthrough
// FIXME: GCC may be enabling these in cases where some other k6
// architecture is specified but -m3dnow is explicitly provided. The
// exact semantics need to be determined and emulated here.
Builder.defineMacro("__k6_3__");
Builder.defineMacro("__tune_k6_3__");
}
LLVM_FALLTHROUGH;
case CK_K6:
defineCPUMacros(Builder, "k6");
break;