1d8c381c01
Changes the coverage map injected into binaries compiled with `-Zinstrument-coverage` to LLVM Coverage Mapping Format, Version 4 (from Version 3). Note, binaries compiled with this version will require LLVM tools from at least LLVM Version 11.
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
#include "LLVMWrapper.h"
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#include "llvm/ProfileData/Coverage/CoverageMapping.h"
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#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/ADT/ArrayRef.h"
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#include <iostream>
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using namespace llvm;
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extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
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const char* const Filenames[],
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size_t FilenamesLen,
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RustStringRef BufferOut) {
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SmallVector<StringRef,32> FilenameRefs;
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for (size_t i = 0; i < FilenamesLen; i++) {
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FilenameRefs.push_back(StringRef(Filenames[i]));
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}
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auto FilenamesWriter = coverage::CoverageFilenamesSectionWriter(
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makeArrayRef(FilenameRefs));
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RawRustStringOstream OS(BufferOut);
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FilenamesWriter.write(OS);
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}
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extern "C" void LLVMRustCoverageWriteMappingToBuffer(
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const unsigned *VirtualFileMappingIDs,
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unsigned NumVirtualFileMappingIDs,
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const coverage::CounterExpression *Expressions,
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unsigned NumExpressions,
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coverage::CounterMappingRegion *MappingRegions,
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unsigned NumMappingRegions,
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RustStringRef BufferOut) {
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auto CoverageMappingWriter = coverage::CoverageMappingWriter(
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makeArrayRef(VirtualFileMappingIDs, NumVirtualFileMappingIDs),
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makeArrayRef(Expressions, NumExpressions),
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makeMutableArrayRef(MappingRegions, NumMappingRegions));
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RawRustStringOstream OS(BufferOut);
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CoverageMappingWriter.write(OS);
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}
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extern "C" LLVMValueRef LLVMRustCoverageCreatePGOFuncNameVar(LLVMValueRef F, const char *FuncName) {
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StringRef FuncNameRef(FuncName);
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return wrap(createPGOFuncNameVar(*cast<Function>(unwrap(F)), FuncNameRef));
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}
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extern "C" uint64_t LLVMRustCoverageHashCString(const char *StrVal) {
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StringRef StrRef(StrVal);
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return IndexedInstrProf::ComputeHash(StrRef);
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}
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extern "C" uint64_t LLVMRustCoverageHashByteArray(
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const char *Bytes,
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unsigned NumBytes) {
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StringRef StrRef(Bytes, NumBytes);
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return IndexedInstrProf::ComputeHash(StrRef);
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}
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static void WriteSectionNameToString(LLVMModuleRef M,
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InstrProfSectKind SK,
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RustStringRef Str) {
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Triple TargetTriple(unwrap(M)->getTargetTriple());
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auto name = getInstrProfSectionName(SK, TargetTriple.getObjectFormat());
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RawRustStringOstream OS(Str);
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OS << name;
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}
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extern "C" void LLVMRustCoverageWriteMapSectionNameToString(LLVMModuleRef M,
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RustStringRef Str) {
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WriteSectionNameToString(M, IPSK_covmap, Str);
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}
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extern "C" void LLVMRustCoverageWriteFuncSectionNameToString(LLVMModuleRef M,
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RustStringRef Str) {
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WriteSectionNameToString(M, IPSK_covfun, Str);
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}
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extern "C" void LLVMRustCoverageWriteMappingVarNameToString(RustStringRef Str) {
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auto name = getCoverageMappingVarName();
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RawRustStringOstream OS(Str);
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OS << name;
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}
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extern "C" uint32_t LLVMRustCoverageMappingVersion() {
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return coverage::CovMapVersion::Version4;
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}
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