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#include "LLVMWrapper.h"
#include "llvm/ProfileData/Coverage/CoverageMapping.h"
#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/ADT/ArrayRef.h"
#include <iostream>
using namespace llvm;
// FFI equivalent of enum `llvm::coverage::Counter::CounterKind`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L97-L99
enum class LLVMRustCounterKind {
Zero = 0,
CounterValueReference = 1,
Expression = 2,
};
// FFI equivalent of struct `llvm::coverage::Counter`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L94-L149
struct LLVMRustCounter {
LLVMRustCounterKind CounterKind;
uint32_t ID;
};
static coverage::Counter fromRust(LLVMRustCounter Counter) {
switch (Counter.CounterKind) {
case LLVMRustCounterKind::Zero:
return coverage::Counter::getZero();
case LLVMRustCounterKind::CounterValueReference:
return coverage::Counter::getCounter(Counter.ID);
case LLVMRustCounterKind::Expression:
return coverage::Counter::getExpression(Counter.ID);
}
report_fatal_error("Bad LLVMRustCounterKind!");
}
// FFI equivalent of enum `llvm::coverage::CounterMappingRegion::RegionKind`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L213-L234
enum class LLVMRustCounterMappingRegionKind {
CodeRegion = 0,
ExpansionRegion = 1,
SkippedRegion = 2,
GapRegion = 3,
BranchRegion = 4,
};
static coverage::CounterMappingRegion::RegionKind
fromRust(LLVMRustCounterMappingRegionKind Kind) {
switch (Kind) {
case LLVMRustCounterMappingRegionKind::CodeRegion:
return coverage::CounterMappingRegion::CodeRegion;
case LLVMRustCounterMappingRegionKind::ExpansionRegion:
return coverage::CounterMappingRegion::ExpansionRegion;
case LLVMRustCounterMappingRegionKind::SkippedRegion:
return coverage::CounterMappingRegion::SkippedRegion;
case LLVMRustCounterMappingRegionKind::GapRegion:
return coverage::CounterMappingRegion::GapRegion;
case LLVMRustCounterMappingRegionKind::BranchRegion:
return coverage::CounterMappingRegion::BranchRegion;
}
report_fatal_error("Bad LLVMRustCounterMappingRegionKind!");
}
// FFI equivalent of struct `llvm::coverage::CounterMappingRegion`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L211-L304
struct LLVMRustCounterMappingRegion {
LLVMRustCounter Count;
LLVMRustCounter FalseCount;
uint32_t FileID;
uint32_t ExpandedFileID;
uint32_t LineStart;
uint32_t ColumnStart;
uint32_t LineEnd;
uint32_t ColumnEnd;
LLVMRustCounterMappingRegionKind Kind;
};
// FFI equivalent of enum `llvm::coverage::CounterExpression::ExprKind`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L154
enum class LLVMRustCounterExprKind {
Subtract = 0,
Add = 1,
};
// FFI equivalent of struct `llvm::coverage::CounterExpression`
// https://github.com/rust-lang/llvm-project/blob/ea6fa9c2/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h#L151-L160
struct LLVMRustCounterExpression {
LLVMRustCounterExprKind Kind;
LLVMRustCounter LHS;
LLVMRustCounter RHS;
};
static coverage::CounterExpression::ExprKind
fromRust(LLVMRustCounterExprKind Kind) {
switch (Kind) {
case LLVMRustCounterExprKind::Subtract:
return coverage::CounterExpression::Subtract;
case LLVMRustCounterExprKind::Add:
return coverage::CounterExpression::Add;
}
report_fatal_error("Bad LLVMRustCounterExprKind!");
}
extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
const char* const Filenames[],
size_t FilenamesLen,
RustStringRef BufferOut) {
SmallVector<std::string,32> FilenameRefs;
for (size_t i = 0; i < FilenamesLen; i++) {
FilenameRefs.push_back(std::string(Filenames[i]));
}
auto FilenamesWriter =
coverage::CoverageFilenamesSectionWriter(ArrayRef<std::string>(FilenameRefs));
RawRustStringOstream OS(BufferOut);
FilenamesWriter.write(OS);
}
extern "C" void LLVMRustCoverageWriteMappingToBuffer(
const unsigned *VirtualFileMappingIDs,
unsigned NumVirtualFileMappingIDs,
const LLVMRustCounterExpression *RustExpressions,
unsigned NumExpressions,
const LLVMRustCounterMappingRegion *RustMappingRegions,
unsigned NumMappingRegions,
RustStringRef BufferOut) {
// Convert from FFI representation to LLVM representation.
SmallVector<coverage::CounterMappingRegion, 0> MappingRegions;
MappingRegions.reserve(NumMappingRegions);
for (const auto &Region : ArrayRef<LLVMRustCounterMappingRegion>(
RustMappingRegions, NumMappingRegions)) {
MappingRegions.emplace_back(
fromRust(Region.Count), fromRust(Region.FalseCount),
Region.FileID, Region.ExpandedFileID,
Region.LineStart, Region.ColumnStart, Region.LineEnd, Region.ColumnEnd,
fromRust(Region.Kind));
}
std::vector<coverage::CounterExpression> Expressions;
Expressions.reserve(NumExpressions);
for (const auto &Expression :
ArrayRef<LLVMRustCounterExpression>(RustExpressions, NumExpressions)) {
Expressions.emplace_back(fromRust(Expression.Kind),
fromRust(Expression.LHS),
fromRust(Expression.RHS));
}
auto CoverageMappingWriter = coverage::CoverageMappingWriter(
ArrayRef<unsigned>(VirtualFileMappingIDs, NumVirtualFileMappingIDs),
Expressions,
MappingRegions);
RawRustStringOstream OS(BufferOut);
CoverageMappingWriter.write(OS);
}
extern "C" LLVMValueRef LLVMRustCoverageCreatePGOFuncNameVar(LLVMValueRef F, const char *FuncName) {
StringRef FuncNameRef(FuncName);
return wrap(createPGOFuncNameVar(*cast<Function>(unwrap(F)), FuncNameRef));
}
extern "C" uint64_t LLVMRustCoverageHashCString(const char *StrVal) {
StringRef StrRef(StrVal);
return IndexedInstrProf::ComputeHash(StrRef);
}
extern "C" uint64_t LLVMRustCoverageHashByteArray(
const char *Bytes,
unsigned NumBytes) {
StringRef StrRef(Bytes, NumBytes);
return IndexedInstrProf::ComputeHash(StrRef);
}
static void WriteSectionNameToString(LLVMModuleRef M,
InstrProfSectKind SK,
RustStringRef Str) {
Triple TargetTriple(unwrap(M)->getTargetTriple());
auto name = getInstrProfSectionName(SK, TargetTriple.getObjectFormat());
RawRustStringOstream OS(Str);
OS << name;
}
extern "C" void LLVMRustCoverageWriteMapSectionNameToString(LLVMModuleRef M,
RustStringRef Str) {
WriteSectionNameToString(M, IPSK_covmap, Str);
}
extern "C" void LLVMRustCoverageWriteFuncSectionNameToString(LLVMModuleRef M,
RustStringRef Str) {
WriteSectionNameToString(M, IPSK_covfun, Str);
}
extern "C" void LLVMRustCoverageWriteMappingVarNameToString(RustStringRef Str) {
auto name = getCoverageMappingVarName();
RawRustStringOstream OS(Str);
OS << name;
}
extern "C" uint32_t LLVMRustCoverageMappingVersion() {
return coverage::CovMapVersion::Version6;
}
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