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Showing content from https://clang.llvm.org/doxygen/Wasm_8cpp_source.html below:

clang: lib/Interpreter/Wasm.cpp Source File

16#include <llvm/IR/LegacyPassManager.h> 17#include <llvm/IR/Module.h> 18#include <llvm/MC/TargetRegistry.h> 19#include <llvm/Target/TargetMachine.h> 53

llvm::raw_ostream &stderrOS,

bool

exitEarly,

bool

disableOutput);

62

llvm::orc::ThreadSafeContext &TSC)

66

std::string ErrorString;

68 const

llvm::Target *

Target

= llvm::TargetRegistry::lookupTarget(

69

PTU.

TheModule

->getTargetTriple(), ErrorString);

71 return

llvm::make_error<llvm::StringError>(

"Failed to create Wasm Target: "

72

llvm::inconvertibleErrorCode());

75

llvm::TargetOptions TO = llvm::TargetOptions();

76

llvm::TargetMachine *TargetMachine =

Target

->createTargetMachine(

77

PTU.

TheModule

->getTargetTriple(),

""

, TO, llvm::Reloc::Model::PIC_);

78

PTU.

TheModule

->setDataLayout(TargetMachine->createDataLayout());

79

std::string ObjectFileName = PTU.

TheModule

->getName().str() +

".o"

;

80

std::string BinaryFileName = PTU.

TheModule

->getName().str() +

".wasm"

;

82

std::error_code Error;

83

llvm::raw_fd_ostream ObjectFileOutput(llvm::StringRef(ObjectFileName), Error);

85

llvm::legacy::PassManager PM;

86 if

(TargetMachine->addPassesToEmitFile(PM, ObjectFileOutput,

nullptr

87

llvm::CodeGenFileType::ObjectFile)) {

88 return

llvm::make_error<llvm::StringError>(

89 "Wasm backend cannot produce object."

, llvm::inconvertibleErrorCode());

94 return

llvm::make_error<llvm::StringError>(

"Failed to emit Wasm object."

95

llvm::inconvertibleErrorCode());

98

ObjectFileOutput.close();

100

std::vector<const char *> LinkerArgs = {

"wasm-ld"

103 "--experimental-pic"

105 "--allow-undefined"

106

ObjectFileName.c_str(),

108

BinaryFileName.c_str()};

111

std::vector<lld::DriverDef> WasmDriverArgs;

112

WasmDriverArgs.push_back(WasmDriver);

114 lld::lldMain

(LinkerArgs, llvm::outs(), llvm::errs(), WasmDriverArgs);

117 return

llvm::make_error<llvm::StringError>(

118 "Failed to link incremental module"

, llvm::inconvertibleErrorCode());

120 void

*LoadedLibModule =

121

dlopen(BinaryFileName.c_str(), RTLD_NOW | RTLD_GLOBAL);

122 if

(LoadedLibModule ==

nullptr

) {

123

llvm::errs() << dlerror() <<

'\n'

;

124 return

llvm::make_error<llvm::StringError>(

125 "Failed to load incremental module"

, llvm::inconvertibleErrorCode());

128 return

llvm::Error::success();

132 return

llvm::make_error<llvm::StringError>(

"Not implemented yet"

133

llvm::inconvertibleErrorCode());

138 return

llvm::Error::success();

144 return

llvm::Error::success();

llvm::MachO::Target Target

llvm::Error addModule(PartialTranslationUnit &PTU) override

llvm::Error runCtors() const override

~WasmIncrementalExecutor() override

llvm::Error removeModule(PartialTranslationUnit &PTU) override

llvm::Error cleanUp() override

WasmIncrementalExecutor(llvm::orc::ThreadSafeContext &TSC)

The JSON file list parser is used to communicate input to InstallAPI.

@ Result

The result type of a method or function.

bool link(llvm::ArrayRef< const char * > args, llvm::raw_ostream &stdoutOS, llvm::raw_ostream &stderrOS, bool exitEarly, bool disableOutput)

Result lldMain(llvm::ArrayRef< const char * > args, llvm::raw_ostream &stdoutOS, llvm::raw_ostream &stderrOS, llvm::ArrayRef< DriverDef > drivers)

bool(*)(llvm::ArrayRef< const char * >, llvm::raw_ostream &, llvm::raw_ostream &, bool, bool) Driver

The class keeps track of various objects created as part of processing incremental inputs.

std::unique_ptr< llvm::Module > TheModule

The llvm IR produced for the input.

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