Retry "[ProfileData] (llvm) Use Error in InstrProf and Coverage, NFC"

Transition InstrProf and Coverage over to the stricter Error/Expected
interface.

Changes since the initial commit:
- Fix error message printing in llvm-profdata.
- Check errors in loadTestingFormat() + annotateAllFunctions().
- Defer error handling in InstrProfIterator to InstrProfReader.

Differential Revision: http://reviews.llvm.org/D19901

llvm-svn: 269491

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
index 930001f..11369d6 100644
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -374,9 +374,9 @@ void InstrProfiling::emitNameData() {
     return;
 
   std::string CompressedNameStr;
-  if (auto EC = collectPGOFuncNameStrings(ReferencedNames, CompressedNameStr,
+  if (Error E = collectPGOFuncNameStrings(ReferencedNames, CompressedNameStr,
                                           DoNameCompression)) {
-    llvm::report_fatal_error(EC.message(), false);
+    llvm::report_fatal_error(toString(std::move(E)), false);
   }
 
   auto &Ctx = M->getContext();