Switch from a version 4.2/4.4 switch to a four-byte version string to be put

into the actual gcov file.

Instead of using the bottom 4 bytes as the function identifier, use a counter.
This makes the identifier numbers stable across multiple runs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176616 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/Instrumentation.h

@@ -31,8 +31,9 @@ ModulePass *createOptimalEdgeProfilerPass();
 ModulePass *createPathProfilerPass();
 
 // Insert GCOV profiling instrumentation
+static const char DefaultGCovVersion[4] = {'*', '2', '0', '4'};
 ModulePass *createGCOVProfilerPass(bool EmitNotes = true, bool EmitData = true,
-                                   bool Use402Format = false,
+                                   const char (&Version)[4] =DefaultGCovVersion,
                                    bool UseExtraChecksum = false,
                                    bool NoRedZone = false,
                                    bool NoFunctionNamesInData = false);