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RustWrapper.cpp
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#include "rustllvm.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/Instructions.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/IR/CallSite.h"
//===----------------------------------------------------------------------===
//
// This file defines alternate interfaces to core functions that are more
// readily callable by Rust's FFI.
//
//===----------------------------------------------------------------------===
using namespace llvm;
using namespace llvm::sys;
using namespace llvm::object;
// LLVMAtomicOrdering is already an enum - don't create another
// one.
static AtomicOrdering fromRust(LLVMAtomicOrdering Ordering) {
switch (Ordering) {
case LLVMAtomicOrderingNotAtomic:
return AtomicOrdering::NotAtomic;
case LLVMAtomicOrderingUnordered:
return AtomicOrdering::Unordered;
case LLVMAtomicOrderingMonotonic:
return AtomicOrdering::Monotonic;
case LLVMAtomicOrderingAcquire:
return AtomicOrdering::Acquire;
case LLVMAtomicOrderingRelease:
return AtomicOrdering::Release;
case LLVMAtomicOrderingAcquireRelease:
return AtomicOrdering::AcquireRelease;
case LLVMAtomicOrderingSequentiallyConsistent:
return AtomicOrdering::SequentiallyConsistent;
}
llvm_unreachable("Invalid LLVMAtomicOrdering value!");
}
static char *LastError;
extern "C" LLVMMemoryBufferRef
LLVMRustCreateMemoryBufferWithContentsOfFile(const char *Path) {
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOr =
MemoryBuffer::getFile(Path, -1, false);
if (!BufOr) {
LLVMRustSetLastError(BufOr.getError().message().c_str());
return nullptr;
}
return wrap(BufOr.get().release());
}
extern "C" char *LLVMRustGetLastError(void) {
char *Ret = LastError;
LastError = nullptr;
return Ret;
}
void LLVMRustSetLastError(const char *Err) {
free((void *)LastError);
LastError = strdup(Err);
}
extern "C" void LLVMRustSetNormalizedTarget(LLVMModuleRef M,
const char *Triple) {
unwrap(M)->setTargetTriple(Triple::normalize(Triple));
}
extern "C" void LLVMRustPrintPassTimings() {
raw_fd_ostream OS(2, false); // stderr.
TimerGroup::printAll(OS);
}
extern "C" LLVMValueRef LLVMRustGetNamedValue(LLVMModuleRef M,
const char *Name) {
return wrap(unwrap(M)->getNamedValue(Name));
}
extern "C" LLVMValueRef LLVMRustGetOrInsertFunction(LLVMModuleRef M,
const char *Name,
LLVMTypeRef FunctionTy) {
return wrap(
unwrap(M)->getOrInsertFunction(Name, unwrap<FunctionType>(FunctionTy)));
}
extern "C" LLVMValueRef
LLVMRustGetOrInsertGlobal(LLVMModuleRef M, const char *Name, LLVMTypeRef Ty) {
return wrap(unwrap(M)->getOrInsertGlobal(Name, unwrap(Ty)));
}
extern "C" LLVMTypeRef LLVMRustMetadataTypeInContext(LLVMContextRef C) {
return wrap(Type::getMetadataTy(*unwrap(C)));
}
static Attribute::AttrKind fromRust(LLVMRustAttribute Kind) {
switch (Kind) {
case AlwaysInline:
return Attribute::AlwaysInline;
case ByVal:
return Attribute::ByVal;
case Cold:
return Attribute::Cold;
case InlineHint:
return Attribute::InlineHint;
case MinSize:
return Attribute::MinSize;
case Naked:
return Attribute::Naked;
case NoAlias:
return Attribute::NoAlias;
case NoCapture:
return Attribute::NoCapture;
case NoInline:
return Attribute::NoInline;
case NonNull:
return Attribute::NonNull;
case NoRedZone:
return Attribute::NoRedZone;
case NoReturn:
return Attribute::NoReturn;
case NoUnwind:
return Attribute::NoUnwind;
case OptimizeForSize:
return Attribute::OptimizeForSize;
case ReadOnly:
return Attribute::ReadOnly;
case SExt:
return Attribute::SExt;
case StructRet:
return Attribute::StructRet;
case UWTable:
return Attribute::UWTable;
case ZExt:
return Attribute::ZExt;
case InReg:
return Attribute::InReg;
case SanitizeThread:
return Attribute::SanitizeThread;
case SanitizeAddress:
return Attribute::SanitizeAddress;
case SanitizeMemory:
return Attribute::SanitizeMemory;
}
llvm_unreachable("bad AttributeKind");
}
extern "C" void LLVMRustAddCallSiteAttribute(LLVMValueRef Instr, unsigned Index,
LLVMRustAttribute RustAttr) {
CallSite Call = CallSite(unwrap<Instruction>(Instr));
Attribute Attr = Attribute::get(Call->getContext(), fromRust(RustAttr));
AttrBuilder B(Attr);
Call.setAttributes(Call.getAttributes().addAttributes(
Call->getContext(), Index,
AttributeSet::get(Call->getContext(), Index, B)));
}
extern "C" void LLVMRustAddDereferenceableCallSiteAttr(LLVMValueRef Instr,
unsigned Index,
uint64_t Bytes) {
CallSite Call = CallSite(unwrap<Instruction>(Instr));
AttrBuilder B;
B.addDereferenceableAttr(Bytes);
Call.setAttributes(Call.getAttributes().addAttributes(
Call->getContext(), Index,
AttributeSet::get(Call->getContext(), Index, B)));
}
extern "C" void LLVMRustAddFunctionAttribute(LLVMValueRef Fn, unsigned Index,
LLVMRustAttribute RustAttr) {
Function *A = unwrap<Function>(Fn);
Attribute Attr = Attribute::get(A->getContext(), fromRust(RustAttr));
AttrBuilder B(Attr);
A->addAttributes(Index, AttributeSet::get(A->getContext(), Index, B));
}
extern "C" void LLVMRustAddDereferenceableAttr(LLVMValueRef Fn, unsigned Index,
uint64_t Bytes) {
Function *A = unwrap<Function>(Fn);
AttrBuilder B;
B.addDereferenceableAttr(Bytes);
A->addAttributes(Index, AttributeSet::get(A->getContext(), Index, B));
}
extern "C" void LLVMRustAddFunctionAttrStringValue(LLVMValueRef Fn,
unsigned Index,
const char *Name,
const char *Value) {
Function *F = unwrap<Function>(Fn);
AttrBuilder B;
B.addAttribute(Name, Value);
F->addAttributes(Index, AttributeSet::get(F->getContext(), Index, B));
}
extern "C" void LLVMRustRemoveFunctionAttributes(LLVMValueRef Fn,
unsigned Index,
LLVMRustAttribute RustAttr) {
Function *F = unwrap<Function>(Fn);
const AttributeSet PAL = F->getAttributes();
Attribute Attr = Attribute::get(F->getContext(), fromRust(RustAttr));
AttrBuilder B(Attr);
const AttributeSet PALNew = PAL.removeAttributes(
F->getContext(), Index, AttributeSet::get(F->getContext(), Index, B));
F->setAttributes(PALNew);
}
// enable fpmath flag UnsafeAlgebra
extern "C" void LLVMRustSetHasUnsafeAlgebra(LLVMValueRef V) {
if (auto I = dyn_cast<Instruction>(unwrap<Value>(V))) {
I->setHasUnsafeAlgebra(true);
}
}
extern "C" LLVMValueRef
LLVMRustBuildAtomicLoad(LLVMBuilderRef B, LLVMValueRef Source, const char *Name,
LLVMAtomicOrdering Order, unsigned Alignment) {
LoadInst *LI = new LoadInst(unwrap(Source), 0);
LI->setAtomic(fromRust(Order));
LI->setAlignment(Alignment);
return wrap(unwrap(B)->Insert(LI, Name));
}
extern "C" LLVMValueRef LLVMRustBuildAtomicStore(LLVMBuilderRef B,
LLVMValueRef V,
LLVMValueRef Target,
LLVMAtomicOrdering Order,
unsigned Alignment) {
StoreInst *SI = new StoreInst(unwrap(V), unwrap(Target));
SI->setAtomic(fromRust(Order));
SI->setAlignment(Alignment);
return wrap(unwrap(B)->Insert(SI));
}
extern "C" LLVMValueRef
LLVMRustBuildAtomicCmpXchg(LLVMBuilderRef B, LLVMValueRef Target,
LLVMValueRef Old, LLVMValueRef Source,
LLVMAtomicOrdering Order,
LLVMAtomicOrdering FailureOrder, LLVMBool Weak) {
AtomicCmpXchgInst *ACXI = unwrap(B)->CreateAtomicCmpXchg(
unwrap(Target), unwrap(Old), unwrap(Source), fromRust(Order),
fromRust(FailureOrder));
ACXI->setWeak(Weak);
return wrap(ACXI);
}
enum class LLVMRustSynchronizationScope {
Other,
SingleThread,
CrossThread,
};
static SynchronizationScope fromRust(LLVMRustSynchronizationScope Scope) {
switch (Scope) {
case LLVMRustSynchronizationScope::SingleThread:
return SingleThread;
case LLVMRustSynchronizationScope::CrossThread:
return CrossThread;
default:
llvm_unreachable("bad SynchronizationScope.");
}
}
extern "C" LLVMValueRef
LLVMRustBuildAtomicFence(LLVMBuilderRef B, LLVMAtomicOrdering Order,
LLVMRustSynchronizationScope Scope) {
return wrap(unwrap(B)->CreateFence(fromRust(Order), fromRust(Scope)));
}
extern "C" void LLVMRustSetDebug(int Enabled) {
#ifndef NDEBUG
DebugFlag = Enabled;
#endif
}
enum class LLVMRustAsmDialect {
Other,
Att,
Intel,
};
static InlineAsm::AsmDialect fromRust(LLVMRustAsmDialect Dialect) {
switch (Dialect) {
case LLVMRustAsmDialect::Att:
return InlineAsm::AD_ATT;
case LLVMRustAsmDialect::Intel:
return InlineAsm::AD_Intel;
default:
llvm_unreachable("bad AsmDialect.");
}
}
extern "C" LLVMValueRef LLVMRustInlineAsm(LLVMTypeRef Ty, char *AsmString,
char *Constraints,
LLVMBool HasSideEffects,
LLVMBool IsAlignStack,
LLVMRustAsmDialect Dialect) {
return wrap(InlineAsm::get(unwrap<FunctionType>(Ty), AsmString, Constraints,
HasSideEffects, IsAlignStack, fromRust(Dialect)));
}
typedef DIBuilder *LLVMRustDIBuilderRef;
typedef struct LLVMOpaqueMetadata *LLVMRustMetadataRef;
namespace llvm {
DEFINE_ISA_CONVERSION_FUNCTIONS(Metadata, LLVMRustMetadataRef)
inline Metadata **unwrap(LLVMRustMetadataRef *Vals) {
return reinterpret_cast<Metadata **>(Vals);
}
}
template <typename DIT> DIT *unwrapDIPtr(LLVMRustMetadataRef Ref) {
return (DIT *)(Ref ? unwrap<MDNode>(Ref) : nullptr);
}
#define DIDescriptor DIScope
#define DIArray DINodeArray
#define unwrapDI unwrapDIPtr
// These values **must** match debuginfo::DIFlags! They also *happen*
// to match LLVM, but that isn't required as we do giant sets of
// matching below. The value shouldn't be directly passed to LLVM.
enum class LLVMRustDIFlags : uint32_t {
FlagZero = 0,
FlagPrivate = 1,
FlagProtected = 2,
FlagPublic = 3,
FlagFwdDecl = (1 << 2),
FlagAppleBlock = (1 << 3),
FlagBlockByrefStruct = (1 << 4),
FlagVirtual = (1 << 5),
FlagArtificial = (1 << 6),
FlagExplicit = (1 << 7),
FlagPrototyped = (1 << 8),
FlagObjcClassComplete = (1 << 9),
FlagObjectPointer = (1 << 10),
FlagVector = (1 << 11),
FlagStaticMember = (1 << 12),
FlagLValueReference = (1 << 13),
FlagRValueReference = (1 << 14),
FlagMainSubprogram = (1 << 21),
// Do not add values that are not supported by the minimum LLVM
// version we support!
};
inline LLVMRustDIFlags operator&(LLVMRustDIFlags A, LLVMRustDIFlags B) {
return static_cast<LLVMRustDIFlags>(static_cast<uint32_t>(A) &
static_cast<uint32_t>(B));
}
inline LLVMRustDIFlags operator|(LLVMRustDIFlags A, LLVMRustDIFlags B) {
return static_cast<LLVMRustDIFlags>(static_cast<uint32_t>(A) |
static_cast<uint32_t>(B));
}
inline LLVMRustDIFlags &operator|=(LLVMRustDIFlags &A, LLVMRustDIFlags B) {
return A = A | B;
}
inline bool isSet(LLVMRustDIFlags F) { return F != LLVMRustDIFlags::FlagZero; }
inline LLVMRustDIFlags visibility(LLVMRustDIFlags F) {
return static_cast<LLVMRustDIFlags>(static_cast<uint32_t>(F) & 0x3);
}
#if LLVM_VERSION_GE(4, 0)
static DINode::DIFlags fromRust(LLVMRustDIFlags Flags) {
DINode::DIFlags Result = DINode::DIFlags::FlagZero;
#else
static unsigned fromRust(LLVMRustDIFlags Flags) {
unsigned Result = 0;
#endif
switch (visibility(Flags)) {
case LLVMRustDIFlags::FlagPrivate:
Result |= DINode::DIFlags::FlagPrivate;
break;
case LLVMRustDIFlags::FlagProtected:
Result |= DINode::DIFlags::FlagProtected;
break;
case LLVMRustDIFlags::FlagPublic:
Result |= DINode::DIFlags::FlagPublic;
break;
default:
// The rest are handled below
break;
}
if (isSet(Flags & LLVMRustDIFlags::FlagFwdDecl)) {
Result |= DINode::DIFlags::FlagFwdDecl;
}
if (isSet(Flags & LLVMRustDIFlags::FlagAppleBlock)) {
Result |= DINode::DIFlags::FlagAppleBlock;
}
if (isSet(Flags & LLVMRustDIFlags::FlagBlockByrefStruct)) {
Result |= DINode::DIFlags::FlagBlockByrefStruct;
}
if (isSet(Flags & LLVMRustDIFlags::FlagVirtual)) {
Result |= DINode::DIFlags::FlagVirtual;
}
if (isSet(Flags & LLVMRustDIFlags::FlagArtificial)) {
Result |= DINode::DIFlags::FlagArtificial;
}
if (isSet(Flags & LLVMRustDIFlags::FlagExplicit)) {
Result |= DINode::DIFlags::FlagExplicit;
}
if (isSet(Flags & LLVMRustDIFlags::FlagPrototyped)) {
Result |= DINode::DIFlags::FlagPrototyped;
}
if (isSet(Flags & LLVMRustDIFlags::FlagObjcClassComplete)) {
Result |= DINode::DIFlags::FlagObjcClassComplete;
}
if (isSet(Flags & LLVMRustDIFlags::FlagObjectPointer)) {
Result |= DINode::DIFlags::FlagObjectPointer;
}
if (isSet(Flags & LLVMRustDIFlags::FlagVector)) {
Result |= DINode::DIFlags::FlagVector;
}
if (isSet(Flags & LLVMRustDIFlags::FlagStaticMember)) {
Result |= DINode::DIFlags::FlagStaticMember;
}
if (isSet(Flags & LLVMRustDIFlags::FlagLValueReference)) {
Result |= DINode::DIFlags::FlagLValueReference;
}
if (isSet(Flags & LLVMRustDIFlags::FlagRValueReference)) {
Result |= DINode::DIFlags::FlagRValueReference;
}
#if LLVM_RUSTLLVM || LLVM_VERSION_GE(4, 0)
if (isSet(Flags & LLVMRustDIFlags::FlagMainSubprogram)) {
Result |= DINode::DIFlags::FlagMainSubprogram;
}
#endif
return Result;
}
extern "C" uint32_t LLVMRustDebugMetadataVersion() {
return DEBUG_METADATA_VERSION;
}
extern "C" uint32_t LLVMRustVersionMinor() { return LLVM_VERSION_MINOR; }
extern "C" uint32_t LLVMRustVersionMajor() { return LLVM_VERSION_MAJOR; }
extern "C" void LLVMRustAddModuleFlag(LLVMModuleRef M, const char *Name,
uint32_t Value) {
unwrap(M)->addModuleFlag(Module::Warning, Name, Value);
}
extern "C" LLVMRustDIBuilderRef LLVMRustDIBuilderCreate(LLVMModuleRef M) {
return new DIBuilder(*unwrap(M));
}
extern "C" void LLVMRustDIBuilderDispose(LLVMRustDIBuilderRef Builder) {
delete Builder;
}
extern "C" void LLVMRustDIBuilderFinalize(LLVMRustDIBuilderRef Builder) {
Builder->finalize();
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateCompileUnit(
LLVMRustDIBuilderRef Builder, unsigned Lang, LLVMRustMetadataRef FileRef,
const char *Producer, bool isOptimized, const char *Flags,
unsigned RuntimeVer, const char *SplitName) {
auto *File = unwrapDI<DIFile>(FileRef);
#if LLVM_VERSION_GE(4, 0)
return wrap(Builder->createCompileUnit(Lang, File, Producer, isOptimized,
Flags, RuntimeVer, SplitName));
#else
return wrap(Builder->createCompileUnit(Lang, File->getFilename(),
File->getDirectory(), Producer, isOptimized,
Flags, RuntimeVer, SplitName));
#endif
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateFile(LLVMRustDIBuilderRef Builder, const char *Filename,
const char *Directory) {
return wrap(Builder->createFile(Filename, Directory));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateSubroutineType(LLVMRustDIBuilderRef Builder,
LLVMRustMetadataRef File,
LLVMRustMetadataRef ParameterTypes) {
return wrap(Builder->createSubroutineType(
#if LLVM_VERSION_EQ(3, 7)
unwrapDI<DIFile>(File),
#endif
DITypeRefArray(unwrap<MDTuple>(ParameterTypes))));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateFunction(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
const char *LinkageName, LLVMRustMetadataRef File, unsigned LineNo,
LLVMRustMetadataRef Ty, bool IsLocalToUnit, bool IsDefinition,
unsigned ScopeLine, LLVMRustDIFlags Flags, bool IsOptimized,
LLVMValueRef Fn, LLVMRustMetadataRef TParam, LLVMRustMetadataRef Decl) {
#if LLVM_VERSION_GE(3, 8)
DITemplateParameterArray TParams =
DITemplateParameterArray(unwrap<MDTuple>(TParam));
DISubprogram *Sub = Builder->createFunction(
unwrapDI<DIScope>(Scope), Name, LinkageName, unwrapDI<DIFile>(File),
LineNo, unwrapDI<DISubroutineType>(Ty), IsLocalToUnit, IsDefinition,
ScopeLine, fromRust(Flags), IsOptimized, TParams,
unwrapDIPtr<DISubprogram>(Decl));
unwrap<Function>(Fn)->setSubprogram(Sub);
return wrap(Sub);
#else
return wrap(Builder->createFunction(
unwrapDI<DIScope>(Scope), Name, LinkageName, unwrapDI<DIFile>(File),
LineNo, unwrapDI<DISubroutineType>(Ty), IsLocalToUnit, IsDefinition,
ScopeLine, fromRust(Flags), IsOptimized, unwrap<Function>(Fn),
unwrapDIPtr<MDNode>(TParam), unwrapDIPtr<MDNode>(Decl)));
#endif
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateBasicType(LLVMRustDIBuilderRef Builder, const char *Name,
uint64_t SizeInBits, uint32_t AlignInBits,
unsigned Encoding) {
return wrap(Builder->createBasicType(Name, SizeInBits,
#if LLVM_VERSION_LE(3, 9)
AlignInBits,
#endif
Encoding));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreatePointerType(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef PointeeTy,
uint64_t SizeInBits, uint32_t AlignInBits, const char *Name) {
return wrap(Builder->createPointerType(unwrapDI<DIType>(PointeeTy),
SizeInBits, AlignInBits, Name));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateStructType(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef File, unsigned LineNumber, uint64_t SizeInBits,
uint32_t AlignInBits, LLVMRustDIFlags Flags,
LLVMRustMetadataRef DerivedFrom, LLVMRustMetadataRef Elements,
unsigned RunTimeLang, LLVMRustMetadataRef VTableHolder,
const char *UniqueId) {
return wrap(Builder->createStructType(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNumber,
SizeInBits, AlignInBits, fromRust(Flags), unwrapDI<DIType>(DerivedFrom),
DINodeArray(unwrapDI<MDTuple>(Elements)), RunTimeLang,
unwrapDI<DIType>(VTableHolder), UniqueId));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateMemberType(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef File, unsigned LineNo, uint64_t SizeInBits,
uint32_t AlignInBits, uint64_t OffsetInBits, LLVMRustDIFlags Flags,
LLVMRustMetadataRef Ty) {
return wrap(Builder->createMemberType(unwrapDI<DIDescriptor>(Scope), Name,
unwrapDI<DIFile>(File), LineNo,
SizeInBits, AlignInBits, OffsetInBits,
fromRust(Flags), unwrapDI<DIType>(Ty)));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateLexicalBlock(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope,
LLVMRustMetadataRef File, unsigned Line, unsigned Col) {
return wrap(Builder->createLexicalBlock(unwrapDI<DIDescriptor>(Scope),
unwrapDI<DIFile>(File), Line, Col));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateLexicalBlockFile(LLVMRustDIBuilderRef Builder,
LLVMRustMetadataRef Scope,
LLVMRustMetadataRef File) {
return wrap(Builder->createLexicalBlockFile(unwrapDI<DIDescriptor>(Scope),
unwrapDI<DIFile>(File)));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateStaticVariable(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Context, const char *Name,
const char *LinkageName, LLVMRustMetadataRef File, unsigned LineNo,
LLVMRustMetadataRef Ty, bool IsLocalToUnit, LLVMValueRef V,
LLVMRustMetadataRef Decl = nullptr, uint32_t AlignInBits = 0) {
llvm::GlobalVariable *InitVal = cast<llvm::GlobalVariable>(unwrap(V));
#if LLVM_VERSION_GE(4, 0)
llvm::DIExpression *InitExpr = nullptr;
if (llvm::ConstantInt *IntVal = llvm::dyn_cast<llvm::ConstantInt>(InitVal)) {
InitExpr = Builder->createConstantValueExpression(
IntVal->getValue().getSExtValue());
} else if (llvm::ConstantFP *FPVal =
llvm::dyn_cast<llvm::ConstantFP>(InitVal)) {
InitExpr = Builder->createConstantValueExpression(
FPVal->getValueAPF().bitcastToAPInt().getZExtValue());
}
llvm::DIGlobalVariableExpression *VarExpr = Builder->createGlobalVariableExpression(
unwrapDI<DIDescriptor>(Context), Name, LinkageName,
unwrapDI<DIFile>(File), LineNo, unwrapDI<DIType>(Ty), IsLocalToUnit,
InitExpr, unwrapDIPtr<MDNode>(Decl), AlignInBits);
InitVal->setMetadata("dbg", VarExpr);
return wrap(VarExpr);
#else
return wrap(Builder->createGlobalVariable(
unwrapDI<DIDescriptor>(Context), Name, LinkageName,
unwrapDI<DIFile>(File), LineNo, unwrapDI<DIType>(Ty), IsLocalToUnit,
InitVal, unwrapDIPtr<MDNode>(Decl)));
#endif
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateVariable(
LLVMRustDIBuilderRef Builder, unsigned Tag, LLVMRustMetadataRef Scope,
const char *Name, LLVMRustMetadataRef File, unsigned LineNo,
LLVMRustMetadataRef Ty, bool AlwaysPreserve, LLVMRustDIFlags Flags,
unsigned ArgNo, uint32_t AlignInBits) {
#if LLVM_VERSION_GE(3, 8)
if (Tag == 0x100) { // DW_TAG_auto_variable
return wrap(Builder->createAutoVariable(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNo,
unwrapDI<DIType>(Ty), AlwaysPreserve, fromRust(Flags)
#if LLVM_VERSION_GE(4, 0)
,
AlignInBits
#endif
));
} else {
return wrap(Builder->createParameterVariable(
unwrapDI<DIDescriptor>(Scope), Name, ArgNo, unwrapDI<DIFile>(File),
LineNo, unwrapDI<DIType>(Ty), AlwaysPreserve, fromRust(Flags)));
}
#else
return wrap(Builder->createLocalVariable(
Tag, unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNo,
unwrapDI<DIType>(Ty), AlwaysPreserve, fromRust(Flags), ArgNo));
#endif
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateArrayType(LLVMRustDIBuilderRef Builder, uint64_t Size,
uint32_t AlignInBits, LLVMRustMetadataRef Ty,
LLVMRustMetadataRef Subscripts) {
return wrap(
Builder->createArrayType(Size, AlignInBits, unwrapDI<DIType>(Ty),
DINodeArray(unwrapDI<MDTuple>(Subscripts))));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateVectorType(LLVMRustDIBuilderRef Builder, uint64_t Size,
uint32_t AlignInBits, LLVMRustMetadataRef Ty,
LLVMRustMetadataRef Subscripts) {
return wrap(
Builder->createVectorType(Size, AlignInBits, unwrapDI<DIType>(Ty),
DINodeArray(unwrapDI<MDTuple>(Subscripts))));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderGetOrCreateSubrange(LLVMRustDIBuilderRef Builder, int64_t Lo,
int64_t Count) {
return wrap(Builder->getOrCreateSubrange(Lo, Count));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderGetOrCreateArray(LLVMRustDIBuilderRef Builder,
LLVMRustMetadataRef *Ptr, unsigned Count) {
Metadata **DataValue = unwrap(Ptr);
return wrap(
Builder->getOrCreateArray(ArrayRef<Metadata *>(DataValue, Count)).get());
}
extern "C" LLVMValueRef LLVMRustDIBuilderInsertDeclareAtEnd(
LLVMRustDIBuilderRef Builder, LLVMValueRef V, LLVMRustMetadataRef VarInfo,
int64_t *AddrOps, unsigned AddrOpsCount, LLVMValueRef DL,
LLVMBasicBlockRef InsertAtEnd) {
return wrap(Builder->insertDeclare(
unwrap(V), unwrap<DILocalVariable>(VarInfo),
Builder->createExpression(llvm::ArrayRef<int64_t>(AddrOps, AddrOpsCount)),
DebugLoc(cast<MDNode>(unwrap<MetadataAsValue>(DL)->getMetadata())),
unwrap(InsertAtEnd)));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateEnumerator(LLVMRustDIBuilderRef Builder,
const char *Name, uint64_t Val) {
return wrap(Builder->createEnumerator(Name, Val));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateEnumerationType(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef File, unsigned LineNumber, uint64_t SizeInBits,
uint32_t AlignInBits, LLVMRustMetadataRef Elements,
LLVMRustMetadataRef ClassTy) {
return wrap(Builder->createEnumerationType(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNumber,
SizeInBits, AlignInBits, DINodeArray(unwrapDI<MDTuple>(Elements)),
unwrapDI<DIType>(ClassTy)));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateUnionType(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef File, unsigned LineNumber, uint64_t SizeInBits,
uint32_t AlignInBits, LLVMRustDIFlags Flags, LLVMRustMetadataRef Elements,
unsigned RunTimeLang, const char *UniqueId) {
return wrap(Builder->createUnionType(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNumber,
SizeInBits, AlignInBits, fromRust(Flags),
DINodeArray(unwrapDI<MDTuple>(Elements)), RunTimeLang, UniqueId));
}
extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateTemplateTypeParameter(
LLVMRustDIBuilderRef Builder, LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef Ty, LLVMRustMetadataRef File, unsigned LineNo,
unsigned ColumnNo) {
return wrap(Builder->createTemplateTypeParameter(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIType>(Ty)));
}
extern "C" LLVMRustMetadataRef
LLVMRustDIBuilderCreateNameSpace(LLVMRustDIBuilderRef Builder,
LLVMRustMetadataRef Scope, const char *Name,
LLVMRustMetadataRef File, unsigned LineNo) {
return wrap(Builder->createNameSpace(
unwrapDI<DIDescriptor>(Scope), Name, unwrapDI<DIFile>(File), LineNo
#if LLVM_VERSION_GE(4, 0)
,
false // ExportSymbols (only relevant for C++ anonymous namespaces)
#endif
));
}
extern "C" void
LLVMRustDICompositeTypeSetTypeArray(LLVMRustDIBuilderRef Builder,
LLVMRustMetadataRef CompositeTy,
LLVMRustMetadataRef TyArray) {
DICompositeType *Tmp = unwrapDI<DICompositeType>(CompositeTy);
Builder->replaceArrays(Tmp, DINodeArray(unwrap<MDTuple>(TyArray)));
}
extern "C" LLVMValueRef
LLVMRustDIBuilderCreateDebugLocation(LLVMContextRef ContextRef, unsigned Line,
unsigned Column, LLVMRustMetadataRef Scope,
LLVMRustMetadataRef InlinedAt) {
LLVMContext &Context = *unwrap(ContextRef);
DebugLoc debug_loc = DebugLoc::get(Line, Column, unwrapDIPtr<MDNode>(Scope),
unwrapDIPtr<MDNode>(InlinedAt));
return wrap(MetadataAsValue::get(Context, debug_loc.getAsMDNode()));
}
extern "C" int64_t LLVMRustDIBuilderCreateOpDeref() {
return dwarf::DW_OP_deref;
}
extern "C" int64_t LLVMRustDIBuilderCreateOpPlus() { return dwarf::DW_OP_plus; }
extern "C" void LLVMRustWriteTypeToString(LLVMTypeRef Ty, RustStringRef Str) {
RawRustStringOstream OS(Str);
unwrap<llvm::Type>(Ty)->print(OS);
}
extern "C" void LLVMRustWriteValueToString(LLVMValueRef V,
RustStringRef Str) {
RawRustStringOstream OS(Str);
OS << "(";
unwrap<llvm::Value>(V)->getType()->print(OS);
OS << ":";
unwrap<llvm::Value>(V)->print(OS);
OS << ")";
}
extern "C" bool LLVMRustLinkInExternalBitcode(LLVMModuleRef DstRef, char *BC,
size_t Len) {
Module *Dst = unwrap(DstRef);
std::unique_ptr<MemoryBuffer> Buf =
MemoryBuffer::getMemBufferCopy(StringRef(BC, Len));
#if LLVM_VERSION_GE(4, 0)
Expected<std::unique_ptr<Module>> SrcOrError =
llvm::getLazyBitcodeModule(Buf->getMemBufferRef(), Dst->getContext());
if (!SrcOrError) {
LLVMRustSetLastError(toString(SrcOrError.takeError()).c_str());
return false;
}
auto Src = std::move(*SrcOrError);
#else
ErrorOr<std::unique_ptr<Module>> Src =
llvm::getLazyBitcodeModule(std::move(Buf), Dst->getContext());
if (!Src) {
LLVMRustSetLastError(Src.getError().message().c_str());
return false;
}
#endif
std::string Err;
raw_string_ostream Stream(Err);
DiagnosticPrinterRawOStream DP(Stream);
#if LLVM_VERSION_GE(4, 0)
if (Linker::linkModules(*Dst, std::move(Src))) {
#elif LLVM_VERSION_GE(3, 8)
if (Linker::linkModules(*Dst, std::move(Src.get()))) {
#else
if (Linker::LinkModules(Dst, Src->get(),
[&](const DiagnosticInfo &DI) { DI.print(DP); })) {
#endif
LLVMRustSetLastError(Err.c_str());
return false;
}
return true;
}
// Note that the two following functions look quite similar to the
// LLVMGetSectionName function. Sadly, it appears that this function only
// returns a char* pointer, which isn't guaranteed to be null-terminated. The
// function provided by LLVM doesn't return the length, so we've created our own
// function which returns the length as well as the data pointer.
//
// For an example of this not returning a null terminated string, see
// lib/Object/COFFObjectFile.cpp in the getSectionName function. One of the
// branches explicitly creates a StringRef without a null terminator, and then
// that's returned.
inline section_iterator *unwrap(LLVMSectionIteratorRef SI) {
return reinterpret_cast<section_iterator *>(SI);
}
extern "C" size_t LLVMRustGetSectionName(LLVMSectionIteratorRef SI,
const char **Ptr) {
StringRef Ret;
if (std::error_code EC = (*unwrap(SI))->getName(Ret))
report_fatal_error(EC.message());
*Ptr = Ret.data();
return Ret.size();
}
// LLVMArrayType function does not support 64-bit ElementCount
extern "C" LLVMTypeRef LLVMRustArrayType(LLVMTypeRef ElementTy,
uint64_t ElementCount) {
return wrap(ArrayType::get(unwrap(ElementTy), ElementCount));
}
DEFINE_SIMPLE_CONVERSION_FUNCTIONS(Twine, LLVMTwineRef)
DEFINE_SIMPLE_CONVERSION_FUNCTIONS(DebugLoc, LLVMDebugLocRef)
extern "C" void LLVMRustWriteTwineToString(LLVMTwineRef T, RustStringRef Str) {
RawRustStringOstream OS(Str);
unwrap(T)->print(OS);
}
extern "C" void LLVMRustUnpackOptimizationDiagnostic(
LLVMDiagnosticInfoRef DI, RustStringRef PassNameOut,
LLVMValueRef *FunctionOut, LLVMDebugLocRef *DebugLocOut,
RustStringRef MessageOut) {
// Undefined to call this not on an optimization diagnostic!
llvm::DiagnosticInfoOptimizationBase *Opt =
static_cast<llvm::DiagnosticInfoOptimizationBase *>(unwrap(DI));
RawRustStringOstream PassNameOS(PassNameOut);
PassNameOS << Opt->getPassName();
*FunctionOut = wrap(&Opt->getFunction());
*DebugLocOut = wrap(&Opt->getDebugLoc());
RawRustStringOstream MessageOS(MessageOut);
MessageOS << Opt->getMsg();
}
extern "C" void
LLVMRustUnpackInlineAsmDiagnostic(LLVMDiagnosticInfoRef DI, unsigned *CookieOut,
LLVMTwineRef *MessageOut,
LLVMValueRef *InstructionOut) {
// Undefined to call this not on an inline assembly diagnostic!
llvm::DiagnosticInfoInlineAsm *IA =
static_cast<llvm::DiagnosticInfoInlineAsm *>(unwrap(DI));
*CookieOut = IA->getLocCookie();
*MessageOut = wrap(&IA->getMsgStr());
*InstructionOut = wrap(IA->getInstruction());
}
extern "C" void LLVMRustWriteDiagnosticInfoToString(LLVMDiagnosticInfoRef DI,
RustStringRef Str) {
RawRustStringOstream OS(Str);
DiagnosticPrinterRawOStream DP(OS);
unwrap(DI)->print(DP);
}
enum class LLVMRustDiagnosticKind {
Other,
InlineAsm,
StackSize,
DebugMetadataVersion,
SampleProfile,
OptimizationRemark,
OptimizationRemarkMissed,
OptimizationRemarkAnalysis,
OptimizationRemarkAnalysisFPCommute,
OptimizationRemarkAnalysisAliasing,
OptimizationRemarkOther,
OptimizationFailure,
};
static LLVMRustDiagnosticKind toRust(DiagnosticKind Kind) {
switch (Kind) {
case DK_InlineAsm:
return LLVMRustDiagnosticKind::InlineAsm;
case DK_StackSize:
return LLVMRustDiagnosticKind::StackSize;
case DK_DebugMetadataVersion:
return LLVMRustDiagnosticKind::DebugMetadataVersion;
case DK_SampleProfile:
return LLVMRustDiagnosticKind::SampleProfile;
case DK_OptimizationRemark:
return LLVMRustDiagnosticKind::OptimizationRemark;
case DK_OptimizationRemarkMissed:
return LLVMRustDiagnosticKind::OptimizationRemarkMissed;
case DK_OptimizationRemarkAnalysis:
return LLVMRustDiagnosticKind::OptimizationRemarkAnalysis;
#if LLVM_VERSION_GE(3, 8)
case DK_OptimizationRemarkAnalysisFPCommute:
return LLVMRustDiagnosticKind::OptimizationRemarkAnalysisFPCommute;
case DK_OptimizationRemarkAnalysisAliasing:
return LLVMRustDiagnosticKind::OptimizationRemarkAnalysisAliasing;
#endif
default:
#if LLVM_VERSION_GE(3, 9)
return (Kind >= DK_FirstRemark && Kind <= DK_LastRemark)
? LLVMRustDiagnosticKind::OptimizationRemarkOther
: LLVMRustDiagnosticKind::Other;
#else
return LLVMRustDiagnosticKind::Other;
#endif
}
}
extern "C" LLVMRustDiagnosticKind
LLVMRustGetDiagInfoKind(LLVMDiagnosticInfoRef DI) {
return toRust((DiagnosticKind)unwrap(DI)->getKind());
}
// This is kept distinct from LLVMGetTypeKind, because when
// a new type kind is added, the Rust-side enum must be
// updated or UB will result.
extern "C" LLVMTypeKind LLVMRustGetTypeKind(LLVMTypeRef Ty) {
switch (unwrap(Ty)->getTypeID()) {
case Type::VoidTyID:
return LLVMVoidTypeKind;
case Type::HalfTyID:
return LLVMHalfTypeKind;
case Type::FloatTyID:
return LLVMFloatTypeKind;
case Type::DoubleTyID:
return LLVMDoubleTypeKind;
case Type::X86_FP80TyID:
return LLVMX86_FP80TypeKind;
case Type::FP128TyID:
return LLVMFP128TypeKind;
case Type::PPC_FP128TyID:
return LLVMPPC_FP128TypeKind;
case Type::LabelTyID:
return LLVMLabelTypeKind;
case Type::MetadataTyID:
return LLVMMetadataTypeKind;
case Type::IntegerTyID:
return LLVMIntegerTypeKind;
case Type::FunctionTyID:
return LLVMFunctionTypeKind;
case Type::StructTyID:
return LLVMStructTypeKind;
case Type::ArrayTyID:
return LLVMArrayTypeKind;
case Type::PointerTyID:
return LLVMPointerTypeKind;
case Type::VectorTyID:
return LLVMVectorTypeKind;
case Type::X86_MMXTyID:
return LLVMX86_MMXTypeKind;
#if LLVM_VERSION_GE(3, 8)
case Type::TokenTyID:
return LLVMTokenTypeKind;
#endif
}
llvm_unreachable("Unhandled TypeID.");
}