src/rustllvm/CoverageMappingWrapper.cpp

   1 #include "rustllvm.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"
   6
   7 #include <iostream>
   8
   9 using namespace llvm;
  10
  11 extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
  12     const char* const Filenames[],
  13     size_t FilenamesLen,
  14     RustStringRef BufferOut) {
  15   SmallVector<StringRef,32> FilenameRefs;
  16   for (size_t i = 0; i < FilenamesLen; i++) {
  17     FilenameRefs.push_back(StringRef(Filenames[i]));
  18   }
  19   auto FilenamesWriter = coverage::CoverageFilenamesSectionWriter(
  20     makeArrayRef(FilenameRefs));
  21   RawRustStringOstream OS(BufferOut);
  22   FilenamesWriter.write(OS);
  23 }
  24
  25 extern "C" void LLVMRustCoverageWriteMappingToBuffer(
  26     const unsigned *VirtualFileMappingIDs,
  27     unsigned NumVirtualFileMappingIDs,
  28     const coverage::CounterExpression *Expressions,
  29     unsigned NumExpressions,
  30     coverage::CounterMappingRegion *MappingRegions,
  31     unsigned NumMappingRegions,
  32     RustStringRef BufferOut) {
  33   auto CoverageMappingWriter = coverage::CoverageMappingWriter(
  34       makeArrayRef(VirtualFileMappingIDs, NumVirtualFileMappingIDs),
  35       makeArrayRef(Expressions, NumExpressions),
  36       makeMutableArrayRef(MappingRegions, NumMappingRegions));
  37   RawRustStringOstream OS(BufferOut);
  38   CoverageMappingWriter.write(OS);
  39 }
  40
  41 extern "C" uint64_t LLVMRustCoverageComputeHash(const char *Name) {
  42   StringRef NameRef(Name);
  43   return IndexedInstrProf::ComputeHash(NameRef);
  44 }
  45
  46 extern "C" void LLVMRustCoverageWriteSectionNameToString(LLVMModuleRef M,
  47                                                          RustStringRef Str) {
  48   Triple TargetTriple(unwrap(M)->getTargetTriple());
  49   auto name = getInstrProfSectionName(IPSK_covmap,
  50                                       TargetTriple.getObjectFormat());
  51   RawRustStringOstream OS(Str);
  52   OS << name;
  53 }
  54
  55 extern "C" void LLVMRustCoverageWriteMappingVarNameToString(RustStringRef Str) {
  56   auto name = getCoverageMappingVarName();
  57   RawRustStringOstream OS(Str);
  58   OS << name;
  59 }
  60
  61 extern "C" uint32_t LLVMRustCoverageMappingVersion() {
  62   return coverage::CovMapVersion::CurrentVersion;
  63 }