[llvm] r280198 - [Coverage] Make sorting criteria for CounterMappingRegions local.

[Igor Kudrin via llvm-commits]

Author: ikudrin
Date: Wed Aug 31 02:01:17 2016
New Revision: 280198

URL: http://llvm.org/viewvc/llvm-project?rev=280198&view=rev
Log:
[Coverage] Make sorting criteria for CounterMappingRegions local.

Move the comparison function into the only place there it is used,
i.e. the call to std::stable_sort in CoverageMappingWriter::write().

Add sorting by region kinds as it is required to ensure stable order
in our tests and to simplify D23987.

Differential Revision: https://reviews.llvm.org/D24034

Modified:
    llvm/trunk/include/llvm/ProfileData/Coverage/CoverageMapping.h
    llvm/trunk/lib/ProfileData/Coverage/CoverageMappingWriter.cpp

Modified: llvm/trunk/include/llvm/ProfileData/Coverage/CoverageMapping.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ProfileData/Coverage/CoverageMapping.h?rev=280198&r1=280197&r2=280198&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ProfileData/Coverage/CoverageMapping.h (original)
+++ llvm/trunk/include/llvm/ProfileData/Coverage/CoverageMapping.h Wed Aug 31 02:01:17 2016
@@ -245,12 +245,6 @@ struct CounterMappingRegion {
     return std::pair<unsigned, unsigned>(LineEnd, ColumnEnd);
   }
 
-  bool operator<(const CounterMappingRegion &Other) const {
-    if (FileID != Other.FileID)
-      return FileID < Other.FileID;
-    return startLoc() < Other.startLoc();
-  }
-
   bool contains(const CounterMappingRegion &Other) const {
     if (FileID != Other.FileID)
       return false;

Modified: llvm/trunk/lib/ProfileData/Coverage/CoverageMappingWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ProfileData/Coverage/CoverageMappingWriter.cpp?rev=280198&r1=280197&r2=280198&view=diff
==============================================================================
--- llvm/trunk/lib/ProfileData/Coverage/CoverageMappingWriter.cpp (original)
+++ llvm/trunk/lib/ProfileData/Coverage/CoverageMappingWriter.cpp Wed Aug 31 02:01:17 2016
@@ -108,8 +108,16 @@ static void writeCounter(ArrayRef<Counte
 
 void CoverageMappingWriter::write(raw_ostream &OS) {
   // Sort the regions in an ascending order by the file id and the starting
-  // location.
-  std::stable_sort(MappingRegions.begin(), MappingRegions.end());
+  // location. Sort by region kinds to ensure stable order for tests.
+  std::stable_sort(
+      MappingRegions.begin(), MappingRegions.end(),
+      [](const CounterMappingRegion &LHS, const CounterMappingRegion &RHS) {
+        if (LHS.FileID != RHS.FileID)
+          return LHS.FileID < RHS.FileID;
+        if (LHS.startLoc() != RHS.startLoc())
+          return LHS.startLoc() < RHS.startLoc();
+        return LHS.Kind < RHS.Kind;
+      });
 
   // Write out the fileid -> filename mapping.
   encodeULEB128(VirtualFileMapping.size(), OS);