InstrProf: Make CoverageMapping testable and add a basic unit test

Make CoverageMapping easier to create, so that we can write targeted
unit tests for its internals, and add a some infrastructure to write
these tests. Finally, add a simple unit test for basic functionality.

llvm-svn: 229709

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/ProfileData/CoverageMapping.cpp b/llvm/lib/ProfileData/CoverageMapping.cpp
index 9ff7f29f337..3c615d5b784 100644
--- a/llvm/lib/ProfileData/CoverageMapping.cpp
+++ b/llvm/lib/ProfileData/CoverageMapping.cpp
@@ -178,7 +178,7 @@ void FunctionRecordIterator::skipOtherFiles() {
 }
 
 ErrorOr<std::unique_ptr<CoverageMapping>>
-CoverageMapping::load(ObjectFileCoverageMappingReader &CoverageReader,
+CoverageMapping::load(CoverageMappingReader &CoverageReader,
                       IndexedInstrProfReader &ProfileReader) {
   auto Coverage = std::unique_ptr<CoverageMapping>(new CoverageMapping());