1d280b012d
The definition of this struct changes in LLVM 12 due to the addition of branch coverage support. To avoid future mismatches, declare our own struct and then convert between them.
112 lines
3.7 KiB
C++
112 lines
3.7 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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struct LLVMRustCounterMappingRegion {
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coverage::Counter Count;
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uint32_t FileID;
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uint32_t ExpandedFileID;
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uint32_t LineStart;
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uint32_t ColumnStart;
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uint32_t LineEnd;
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uint32_t ColumnEnd;
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coverage::CounterMappingRegion::RegionKind Kind;
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};
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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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LLVMRustCounterMappingRegion *RustMappingRegions,
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unsigned NumMappingRegions,
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RustStringRef BufferOut) {
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// Convert from FFI representation to LLVM representation.
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SmallVector<coverage::CounterMappingRegion, 0> MappingRegions;
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MappingRegions.reserve(NumMappingRegions);
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for (const auto &Region : makeArrayRef(RustMappingRegions, NumMappingRegions)) {
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MappingRegions.emplace_back(
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Region.Count, Region.FileID, Region.ExpandedFileID,
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Region.LineStart, Region.ColumnStart, Region.LineEnd, Region.ColumnEnd,
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Region.Kind);
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}
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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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MappingRegions);
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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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#if LLVM_VERSION_GE(11, 0)
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WriteSectionNameToString(M, IPSK_covfun, Str);
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// else do nothing; the `Version` check will abort codegen on the Rust side
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#endif
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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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#if LLVM_VERSION_GE(11, 0)
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return coverage::CovMapVersion::Version4;
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#else
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return coverage::CovMapVersion::Version3;
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#endif
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}
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