Coverage: add HasCodeBefore flag to a mapping region.
This flag will be used by the coverage tool to help
compute the execution counts for each line in a source file.
Differential Revision: http://reviews.llvm.org/D4746
llvm-svn: 214740
diff --git a/llvm/lib/ProfileData/CoverageMappingReader.cpp b/llvm/lib/ProfileData/CoverageMappingReader.cpp
index c58df0f..c8108d4 100644
--- a/llvm/lib/ProfileData/CoverageMappingReader.cpp
+++ b/llvm/lib/ProfileData/CoverageMappingReader.cpp
@@ -170,13 +170,17 @@
}
// Read the source range.
- uint64_t LineStartDelta, ColumnStart, NumLines, ColumnEnd;
+ uint64_t LineStartDelta, CodeBeforeColumnStart, NumLines, ColumnEnd;
if (auto Err =
readIntMax(LineStartDelta, std::numeric_limits<unsigned>::max()))
return Err;
- if (auto Err =
- readIntMax(ColumnStart, std::numeric_limits<unsigned>::max()))
+ if (auto Err = readULEB128(CodeBeforeColumnStart))
return Err;
+ bool HasCodeBefore = CodeBeforeColumnStart & 1;
+ uint64_t ColumnStart = CodeBeforeColumnStart >>
+ CounterMappingRegion::EncodingHasCodeBeforeBits;
+ if (ColumnStart > std::numeric_limits<unsigned>::max())
+ return error(instrprof_error::malformed);
if (auto Err = readIntMax(NumLines, std::numeric_limits<unsigned>::max()))
return Err;
if (auto Err = readIntMax(ColumnEnd, std::numeric_limits<unsigned>::max()))
@@ -194,9 +198,9 @@
ColumnStart = 1;
ColumnEnd = std::numeric_limits<unsigned>::max();
}
- MappingRegions.push_back(
- CounterMappingRegion(C, InferredFileID, LineStart, ColumnStart,
- LineStart + NumLines, ColumnEnd, Kind));
+ MappingRegions.push_back(CounterMappingRegion(
+ C, InferredFileID, LineStart, ColumnStart, LineStart + NumLines,
+ ColumnEnd, HasCodeBefore, Kind));
MappingRegions.back().ExpandedFileID = ExpandedFileID;
}
return success();