1 #include "LLVMWrapper.h"
2 #include "llvm/ProfileData/Coverage/CoverageMapping.h"
3 #include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
4 #include "llvm/ProfileData/InstrProf.h"
5 #include "llvm/ADT/ArrayRef.h"
11 struct LLVMRustCounterMappingRegion {
12 coverage::Counter Count;
14 uint32_t ExpandedFileID;
19 coverage::CounterMappingRegion::RegionKind Kind;
22 extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
23 const char* const Filenames[],
25 RustStringRef BufferOut) {
26 #if LLVM_VERSION_GE(13,0)
27 SmallVector<std::string,32> FilenameRefs;
28 for (size_t i = 0; i < FilenamesLen; i++) {
29 FilenameRefs.push_back(std::string(Filenames[i]));
32 SmallVector<StringRef,32> FilenameRefs;
33 for (size_t i = 0; i < FilenamesLen; i++) {
34 FilenameRefs.push_back(StringRef(Filenames[i]));
37 auto FilenamesWriter = coverage::CoverageFilenamesSectionWriter(
38 makeArrayRef(FilenameRefs));
39 RawRustStringOstream OS(BufferOut);
40 FilenamesWriter.write(OS);
43 extern "C" void LLVMRustCoverageWriteMappingToBuffer(
44 const unsigned *VirtualFileMappingIDs,
45 unsigned NumVirtualFileMappingIDs,
46 const coverage::CounterExpression *Expressions,
47 unsigned NumExpressions,
48 LLVMRustCounterMappingRegion *RustMappingRegions,
49 unsigned NumMappingRegions,
50 RustStringRef BufferOut) {
51 // Convert from FFI representation to LLVM representation.
52 SmallVector<coverage::CounterMappingRegion, 0> MappingRegions;
53 MappingRegions.reserve(NumMappingRegions);
54 for (const auto &Region : makeArrayRef(RustMappingRegions, NumMappingRegions)) {
55 MappingRegions.emplace_back(
56 Region.Count, Region.FileID, Region.ExpandedFileID,
57 Region.LineStart, Region.ColumnStart, Region.LineEnd, Region.ColumnEnd,
60 auto CoverageMappingWriter = coverage::CoverageMappingWriter(
61 makeArrayRef(VirtualFileMappingIDs, NumVirtualFileMappingIDs),
62 makeArrayRef(Expressions, NumExpressions),
64 RawRustStringOstream OS(BufferOut);
65 CoverageMappingWriter.write(OS);
68 extern "C" LLVMValueRef LLVMRustCoverageCreatePGOFuncNameVar(LLVMValueRef F, const char *FuncName) {
69 StringRef FuncNameRef(FuncName);
70 return wrap(createPGOFuncNameVar(*cast<Function>(unwrap(F)), FuncNameRef));
73 extern "C" uint64_t LLVMRustCoverageHashCString(const char *StrVal) {
74 StringRef StrRef(StrVal);
75 return IndexedInstrProf::ComputeHash(StrRef);
78 extern "C" uint64_t LLVMRustCoverageHashByteArray(
81 StringRef StrRef(Bytes, NumBytes);
82 return IndexedInstrProf::ComputeHash(StrRef);
85 static void WriteSectionNameToString(LLVMModuleRef M,
88 Triple TargetTriple(unwrap(M)->getTargetTriple());
89 auto name = getInstrProfSectionName(SK, TargetTriple.getObjectFormat());
90 RawRustStringOstream OS(Str);
94 extern "C" void LLVMRustCoverageWriteMapSectionNameToString(LLVMModuleRef M,
96 WriteSectionNameToString(M, IPSK_covmap, Str);
99 extern "C" void LLVMRustCoverageWriteFuncSectionNameToString(LLVMModuleRef M,
101 #if LLVM_VERSION_GE(11, 0)
102 WriteSectionNameToString(M, IPSK_covfun, Str);
103 // else do nothing; the `Version` check will abort codegen on the Rust side
107 extern "C" void LLVMRustCoverageWriteMappingVarNameToString(RustStringRef Str) {
108 auto name = getCoverageMappingVarName();
109 RawRustStringOstream OS(Str);
113 extern "C" uint32_t LLVMRustCoverageMappingVersion() {
114 #if LLVM_VERSION_GE(11, 0)
115 return coverage::CovMapVersion::Version4;
117 return coverage::CovMapVersion::Version3;