ProfileData: Introduce InstrProfWriter using the naive text format

This isn't a format we'll want to write out in practice, but moving it
to the writer library simplifies llvm-profdata and isolates it from
further changes to the format.

This also allows us to update the tests to not rely on the text output
format.

llvm-svn: 204489

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index 329abf84e6e..ecabdd75bdf 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -39,6 +39,12 @@ class InstrProfErrorCategoryType : public error_category {
       return "Malformed profile data";
     case instrprof_error::unknown_function:
       return "No profile data available for function";
+    case instrprof_error::hash_mismatch:
+      return "Function hash mismatch";
+    case instrprof_error::count_mismatch:
+      return "Function count mismatch";
+    case instrprof_error::counter_overflow:
+      return "Counter overflow";
     }
     llvm_unreachable("A value of instrprof_error has no message.");
   }