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//===--- WebAssembly.cpp - Implement WebAssembly target feature support ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements WebAssembly TargetInfo objects.
//
//===----------------------------------------------------------------------===//
#include "WebAssembly.h"
#include "Targets.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/TargetBuiltins.h"
#include "llvm/ADT/StringSwitch.h"
using namespace clang;
using namespace clang::targets;
const Builtin::Info WebAssemblyTargetInfo::BuiltinInfo[] = {
#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 LIBBUILTIN(ID, TYPE, ATTRS, HEADER) \
{#ID, TYPE, ATTRS, HEADER, ALL_LANGUAGES, nullptr},
#include "clang/Basic/BuiltinsWebAssembly.def"
};
static constexpr llvm::StringLiteral ValidCPUNames[] = {
{"mvp"}, {"bleeding-edge"}, {"generic"}};
bool WebAssemblyTargetInfo::hasFeature(StringRef Feature) const {
return llvm::StringSwitch<bool>(Feature)
.Case("simd128", SIMDLevel >= SIMD128)
.Case("unimplemented-simd128", SIMDLevel >= UnimplementedSIMD128)
.Case("nontrapping-fptoint", HasNontrappingFPToInt)
.Case("sign-ext", HasSignExt)
.Case("exception-handling", HasExceptionHandling)
.Default(false);
}
bool WebAssemblyTargetInfo::isValidCPUName(StringRef Name) const {
return llvm::find(ValidCPUNames, Name) != std::end(ValidCPUNames);
}
void WebAssemblyTargetInfo::fillValidCPUList(
SmallVectorImpl<StringRef> &Values) const {
Values.append(std::begin(ValidCPUNames), std::end(ValidCPUNames));
}
void WebAssemblyTargetInfo::getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const {
defineCPUMacros(Builder, "wasm", /*Tuning=*/false);
if (SIMDLevel >= SIMD128)
Builder.defineMacro("__wasm_simd128__");
if (SIMDLevel >= UnimplementedSIMD128)
Builder.defineMacro("__wasm_unimplemented_simd128__");
}
void WebAssemblyTargetInfo::setSIMDLevel(llvm::StringMap<bool> &Features,
SIMDEnum Level) {
switch (Level) {
case UnimplementedSIMD128:
Features["unimplemented-simd128"] = true;
LLVM_FALLTHROUGH;
case SIMD128:
Features["simd128"] = true;
LLVM_FALLTHROUGH;
case NoSIMD:
break;
}
}
bool WebAssemblyTargetInfo::initFeatureMap(
llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, StringRef CPU,
const std::vector<std::string> &FeaturesVec) const {
if (CPU == "bleeding-edge") {
Features["nontrapping-fptoint"] = true;
Features["sign-ext"] = true;
setSIMDLevel(Features, SIMD128);
}
// Other targets do not consider user-configured features here, but while we
// are actively developing new features it is useful to let user-configured
// features control availability of builtins
setSIMDLevel(Features, SIMDLevel);
if (HasNontrappingFPToInt)
Features["nontrapping-fptoint"] = true;
if (HasSignExt)
Features["sign-ext"] = true;
if (HasExceptionHandling)
Features["exception-handling"] = true;
return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
}
bool WebAssemblyTargetInfo::handleTargetFeatures(
std::vector<std::string> &Features, DiagnosticsEngine &Diags) {
for (const auto &Feature : Features) {
if (Feature == "+simd128") {
SIMDLevel = std::max(SIMDLevel, SIMD128);
continue;
}
if (Feature == "-simd128") {
SIMDLevel = std::min(SIMDLevel, SIMDEnum(SIMD128 - 1));
continue;
}
if (Feature == "+unimplemented-simd128") {
SIMDLevel = std::max(SIMDLevel, SIMDEnum(UnimplementedSIMD128));
continue;
}
if (Feature == "-unimplemented-simd128") {
SIMDLevel = std::min(SIMDLevel, SIMDEnum(UnimplementedSIMD128 - 1));
continue;
}
if (Feature == "+nontrapping-fptoint") {
HasNontrappingFPToInt = true;
continue;
}
if (Feature == "-nontrapping-fptoint") {
HasNontrappingFPToInt = false;
continue;
}
if (Feature == "+sign-ext") {
HasSignExt = true;
continue;
}
if (Feature == "-sign-ext") {
HasSignExt = false;
continue;
}
if (Feature == "+exception-handling") {
HasExceptionHandling = true;
continue;
}
if (Feature == "-exception-handling") {
HasExceptionHandling = false;
continue;
}
Diags.Report(diag::err_opt_not_valid_with_opt)
<< Feature << "-target-feature";
return false;
}
return true;
}
ArrayRef<Builtin::Info> WebAssemblyTargetInfo::getTargetBuiltins() const {
return llvm::makeArrayRef(BuiltinInfo, clang::WebAssembly::LastTSBuiltin -
Builtin::FirstTSBuiltin);
}
void WebAssembly32TargetInfo::getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const {
WebAssemblyTargetInfo::getTargetDefines(Opts, Builder);
defineCPUMacros(Builder, "wasm32", /*Tuning=*/false);
}
void WebAssembly64TargetInfo::getTargetDefines(const LangOptions &Opts,
MacroBuilder &Builder) const {
WebAssemblyTargetInfo::getTargetDefines(Opts, Builder);
defineCPUMacros(Builder, "wasm64", /*Tuning=*/false);
}
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