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llvm-cov: Removed StringMap holding GCOVLines.

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According to the hazy gcov documentation, it appeared to be technically
possible for lines within a block to belong to different source files.
However, upon further investigation, gcov does not actually support
multiple source files for a single block.

This change removes a level of separation between blocks and lines by
replacing the StringMap of GCOVLines with a SmallVector of ints
representing line numbers. This also means that the GCOVLines class is
no longer needed.

This paves the way for supporting the "-a" option, which will output
block information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194637 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Yuchen Wu
2013-11-14 00:32:00 +00:00
parent dbb51ff01f
commit 131a764e0e
3 changed files with 21 additions and 55 deletions
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22
include/llvm/Support/GCOV.h
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@@ -25,7 +25,6 @@ namespace llvm {
class GCOVFunction;
class GCOVBlock;
class GCOVLines;
class FileInfo;
namespace GCOV {
@@ -211,6 +210,7 @@ public:
GCOVFunction() : Ident(0), LineNumber(0) {}
~GCOVFunction();
bool read(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
StringRef getFilename() const { return Filename; }
void dump();
void collectLineCounts(FileInfo &FI);
private:
@@ -224,31 +224,21 @@ private:
/// GCOVBlock - Collects block information.
class GCOVBlock {
public:
GCOVBlock(uint32_t N) : Number(N), Counter(0) {}
GCOVBlock(GCOVFunction &P, uint32_t N) :
Parent(P), Number(N), Counter(0), Edges(), Lines() {}
~GCOVBlock();
void addEdge(uint32_t N) { Edges.push_back(N); }
void addLine(StringRef Filename, uint32_t LineNo);
void addLine(uint32_t N) { Lines.push_back(N); }
void addCount(uint64_t N) { Counter += N; }
size_t getNumEdges() { return Edges.size(); }
void dump();
void collectLineCounts(FileInfo &FI);
private:
GCOVFunction &Parent;
uint32_t Number;
uint64_t Counter;
SmallVector<uint32_t, 16> Edges;
StringMap<GCOVLines *> Lines;
};
/// GCOVLines - A wrapper around a vector of int to keep track of line nos.
class GCOVLines {
public:
~GCOVLines() { Lines.clear(); }
void add(uint32_t N) { Lines.push_back(N); }
void collectLineCounts(FileInfo &FI, StringRef Filename, uint64_t Count);
void dump();
private:
SmallVector<uint32_t, 4> Lines;
SmallVector<uint32_t, 16> Lines;
};
typedef DenseMap<uint32_t, uint64_t> LineCounts;