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llvm-project/clang/lib/Basic/Targets/AMDGPU.h

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//===--- AMDGPU.h - Declare AMDGPU target feature support -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares AMDGPU TargetInfo objects.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_AMDGPU_H
#define LLVM_CLANG_LIB_BASIC_TARGETS_AMDGPU_H
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/Compiler.h"
namespace clang {
namespace targets {
class LLVM_LIBRARY_VISIBILITY AMDGPUTargetInfo final : public TargetInfo {
static const Builtin::Info BuiltinInfo[];
static const char *const GCCRegNames[];
struct LLVM_LIBRARY_VISIBILITY AddrSpace {
unsigned Generic, Global, Local, Constant, Private;
AddrSpace(bool IsGenericZero_ = false) {
if (IsGenericZero_) {
Generic = 0;
Global = 1;
Local = 3;
Constant = 2;
Private = 5;
} else {
Generic = 4;
Global = 1;
Local = 3;
Constant = 2;
Private = 0;
}
}
};
/// \brief The GPU profiles supported by the AMDGPU target.
enum GPUKind {
GK_NONE,
GK_R600,
GK_R600_DOUBLE_OPS,
GK_R700,
GK_R700_DOUBLE_OPS,
GK_EVERGREEN,
GK_EVERGREEN_DOUBLE_OPS,
GK_NORTHERN_ISLANDS,
GK_CAYMAN,
GK_GFX6,
GK_GFX7,
GK_GFX8,
GK_GFX9
} GPU;
struct NameGPUKind {
llvm::StringLiteral Name;
AMDGPUTargetInfo::GPUKind Kind;
};
static constexpr NameGPUKind R600Names[25] = {
{{"r600"}, GK_R600},
{{"rv610"}, GK_R600},
{{"rv620"}, GK_R600},
{{"rv630"}, GK_R600},
{{"rv635"}, GK_R600},
{{"rs780"}, GK_R600},
{{"rs880"}, GK_R600},
{{"rv670"}, GK_R600_DOUBLE_OPS},
{{"rv710"}, GK_R700},
{{"rv730"}, GK_R700},
{{"rv740"}, GK_R700_DOUBLE_OPS},
{{"rv770"}, GK_R700_DOUBLE_OPS},
{{"palm"}, GK_EVERGREEN},
{{"cedar"}, GK_EVERGREEN},
{{"sumo"}, GK_EVERGREEN},
{{"sumo2"}, GK_EVERGREEN},
{{"redwood"}, GK_EVERGREEN},
{{"juniper"}, GK_EVERGREEN},
{{"hemlock"}, GK_EVERGREEN_DOUBLE_OPS},
{{"cypress"}, GK_EVERGREEN_DOUBLE_OPS},
{{"barts"}, GK_NORTHERN_ISLANDS},
{{"turks"}, GK_NORTHERN_ISLANDS},
{{"caicos"}, GK_NORTHERN_ISLANDS},
{{"cayman"}, GK_CAYMAN},
{{"aruba"}, GK_CAYMAN},
};
static constexpr NameGPUKind AMDGCNNames[33] = {
{{"gfx600"}, GK_GFX6}, {{"tahiti"}, GK_GFX6},
{{"gfx601"}, GK_GFX6}, {{"pitcairn"}, GK_GFX6},
{{"verde"}, GK_GFX6}, {{"oland"}, GK_GFX6},
{{"hainan"}, GK_GFX6}, {{"gfx700"}, GK_GFX7},
{{"bonaire"}, GK_GFX7}, {{"kaveri"}, GK_GFX7},
{{"gfx701"}, GK_GFX7}, {{"hawaii"}, GK_GFX7},
{{"gfx702"}, GK_GFX7}, {{"gfx703"}, GK_GFX7},
{{"kabini"}, GK_GFX7}, {{"mullins"}, GK_GFX7},
{{"gfx800"}, GK_GFX8}, {{"iceland"}, GK_GFX8},
{{"gfx801"}, GK_GFX8}, {{"carrizo"}, GK_GFX8},
{{"gfx802"}, GK_GFX8}, {{"tonga"}, GK_GFX8},
{{"gfx803"}, GK_GFX8}, {{"fiji"}, GK_GFX8},
{{"polaris10"}, GK_GFX8}, {{"polaris11"}, GK_GFX8},
{{"gfx804"}, GK_GFX8}, {{"gfx810"}, GK_GFX8},
{{"stoney"}, GK_GFX8}, {{"gfx900"}, GK_GFX9},
{{"gfx901"}, GK_GFX9}, {{"gfx902"}, GK_GFX9},
{{"gfx903"}, GK_GFX9},
};
bool hasFP64 : 1;
bool hasFMAF : 1;
bool hasLDEXPF : 1;
const AddrSpace AS;
static bool hasFullSpeedFMAF32(StringRef GPUName) {
return parseAMDGCNName(GPUName) >= GK_GFX9;
}
static bool isAMDGCN(const llvm::Triple &TT) {
return TT.getArch() == llvm::Triple::amdgcn;
}
static bool isGenericZero(const llvm::Triple &TT) { return true; }
public:
AMDGPUTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
void setAddressSpaceMap(bool DefaultIsPrivate);
void adjust(LangOptions &Opts) override;
uint64_t getPointerWidthV(unsigned AddrSpace) const override {
if (GPU <= GK_CAYMAN)
return 32;
if (AddrSpace == AS.Private || AddrSpace == AS.Local) {
return 32;
}
return 64;
}
uint64_t getPointerAlignV(unsigned AddrSpace) const override {
return getPointerWidthV(AddrSpace);
}
uint64_t getMaxPointerWidth() const override {
return getTriple().getArch() == llvm::Triple::amdgcn ? 64 : 32;
}
const char *getClobbers() const override { return ""; }
ArrayRef<const char *> getGCCRegNames() const override;
ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
return None;
}
/// Accepted register names: (n, m is unsigned integer, n < m)
/// v
/// s
/// {vn}, {v[n]}
/// {sn}, {s[n]}
/// {S} , where S is a special register name
////{v[n:m]}
/// {s[n:m]}
bool validateAsmConstraint(const char *&Name,
TargetInfo::ConstraintInfo &Info) const override {
static const ::llvm::StringSet<> SpecialRegs({
"exec", "vcc", "flat_scratch", "m0", "scc", "tba", "tma",
"flat_scratch_lo", "flat_scratch_hi", "vcc_lo", "vcc_hi", "exec_lo",
"exec_hi", "tma_lo", "tma_hi", "tba_lo", "tba_hi",
});
StringRef S(Name);
bool HasLeftParen = false;
if (S.front() == '{') {
HasLeftParen = true;
S = S.drop_front();
}
if (S.empty())
return false;
if (S.front() != 'v' && S.front() != 's') {
if (!HasLeftParen)
return false;
auto E = S.find('}');
if (!SpecialRegs.count(S.substr(0, E)))
return false;
S = S.drop_front(E + 1);
if (!S.empty())
return false;
// Found {S} where S is a special register.
Info.setAllowsRegister();
Name = S.data() - 1;
return true;
}
S = S.drop_front();
if (!HasLeftParen) {
if (!S.empty())
return false;
// Found s or v.
Info.setAllowsRegister();
Name = S.data() - 1;
return true;
}
bool HasLeftBracket = false;
if (!S.empty() && S.front() == '[') {
HasLeftBracket = true;
S = S.drop_front();
}
unsigned long long N;
if (S.empty() || consumeUnsignedInteger(S, 10, N))
return false;
if (!S.empty() && S.front() == ':') {
if (!HasLeftBracket)
return false;
S = S.drop_front();
unsigned long long M;
if (consumeUnsignedInteger(S, 10, M) || N >= M)
return false;
}
if (HasLeftBracket) {
if (S.empty() || S.front() != ']')
return false;
S = S.drop_front();
}
if (S.empty() || S.front() != '}')
return false;
S = S.drop_front();
if (!S.empty())
return false;
// Found {vn}, {sn}, {v[n]}, {s[n]}, {v[n:m]}, or {s[n:m]}.
Info.setAllowsRegister();
Name = S.data() - 1;
return true;
}
bool
initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
StringRef CPU,
const std::vector<std::string> &FeatureVec) const override;
void adjustTargetOptions(const CodeGenOptions &CGOpts,
TargetOptions &TargetOpts) const override;
ArrayRef<Builtin::Info> getTargetBuiltins() const override;
void getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const override;
BuiltinVaListKind getBuiltinVaListKind() const override {
return TargetInfo::CharPtrBuiltinVaList;
}
static GPUKind parseR600Name(StringRef Name);
static GPUKind parseAMDGCNName(StringRef Name);
bool isValidCPUName(StringRef Name) const override {
if (getTriple().getArch() == llvm::Triple::amdgcn)
return GK_NONE != parseAMDGCNName(Name);
else
return GK_NONE != parseR600Name(Name);
}
void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
bool setCPU(const std::string &Name) override {
if (getTriple().getArch() == llvm::Triple::amdgcn)
GPU = parseAMDGCNName(Name);
else
GPU = parseR600Name(Name);
return GPU != GK_NONE;
}
void setSupportedOpenCLOpts() override {
auto &Opts = getSupportedOpenCLOpts();
Opts.support("cl_clang_storage_class_specifiers");
Opts.support("cl_khr_icd");
if (hasFP64)
Opts.support("cl_khr_fp64");
if (GPU >= GK_EVERGREEN) {
Opts.support("cl_khr_byte_addressable_store");
Opts.support("cl_khr_global_int32_base_atomics");
Opts.support("cl_khr_global_int32_extended_atomics");
Opts.support("cl_khr_local_int32_base_atomics");
Opts.support("cl_khr_local_int32_extended_atomics");
}
if (GPU >= GK_GFX6) {
Opts.support("cl_khr_fp16");
Opts.support("cl_khr_int64_base_atomics");
Opts.support("cl_khr_int64_extended_atomics");
Opts.support("cl_khr_mipmap_image");
Opts.support("cl_khr_subgroups");
Opts.support("cl_khr_3d_image_writes");
Opts.support("cl_amd_media_ops");
Opts.support("cl_amd_media_ops2");
}
}
LangAS getOpenCLTypeAddrSpace(OpenCLTypeKind TK) const override {
switch (TK) {
case OCLTK_Image:
return LangAS::opencl_constant;
case OCLTK_ClkEvent:
case OCLTK_Queue:
case OCLTK_ReserveID:
return LangAS::opencl_global;
default:
return TargetInfo::getOpenCLTypeAddrSpace(TK);
}
}
llvm::Optional<LangAS> getConstantAddressSpace() const override {
return getLangASFromTargetAS(AS.Constant);
}
/// \returns Target specific vtbl ptr address space.
unsigned getVtblPtrAddressSpace() const override { return AS.Constant; }
/// \returns If a target requires an address within a target specific address
/// space \p AddressSpace to be converted in order to be used, then return the
/// corresponding target specific DWARF address space.
///
/// \returns Otherwise return None and no conversion will be emitted in the
/// DWARF.
Optional<unsigned>
getDWARFAddressSpace(unsigned AddressSpace) const override {
const unsigned DWARF_Private = 1;
const unsigned DWARF_Local = 2;
if (AddressSpace == AS.Private) {
return DWARF_Private;
} else if (AddressSpace == AS.Local) {
return DWARF_Local;
} else {
return None;
}
}
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
switch (CC) {
default:
return CCCR_Warning;
case CC_C:
case CC_OpenCLKernel:
return CCCR_OK;
}
}
// In amdgcn target the null pointer in global, constant, and generic
// address space has value 0 but in private and local address space has
// value ~0.
uint64_t getNullPointerValue(LangAS AS) const override {
return AS == LangAS::opencl_local ? ~0 : 0;
}
};
} // namespace targets
} // namespace clang
#endif // LLVM_CLANG_LIB_BASIC_TARGETS_AMDGPU_H
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