Remove object_error::success and use std::error_code() instead

make_error_code(object_error) is slow because object::object_category()
uses a ManagedStatic variable. But the real problem is that the function is
called too frequently. This patch uses std::error_code() instead of
object_error::success. In most cases, we return "success", so this patch
reduces number of function calls to that function.

http://reviews.llvm.org/D10333

llvm-svn: 239409

2 files changed, 8 insertions, 8 deletions

diff --git a/llvm/tools/llvm-objdump/COFFDump.cpp b/llvm/tools/llvm-objdump/COFFDump.cpp
index 4a20b91b71f..976a92154bd 100644
--- a/llvm/tools/llvm-objdump/COFFDump.cpp
+++ b/llvm/tools/llvm-objdump/COFFDump.cpp
@@ -167,7 +167,7 @@ resolveSectionAndAddress(const COFFObjectFile *Obj, const SymbolRef &Sym,
   if (std::error_code EC = Sym.getSection(iter))
     return EC;
   ResolvedSection = Obj->getCOFFSection(*iter);
-  return object_error::success;
+  return std::error_code();
 }
 
 // Given a vector of relocations for a section and an offset into this section
@@ -182,7 +182,7 @@ static std::error_code resolveSymbol(const std::vector<RelocationRef> &Rels,
       return EC;
     if (Ofs == Offset) {
       Sym = *I->getSymbol();
-      return object_error::success;
+      return std::error_code();
     }
   }
   return object_error::parse_failed;
@@ -204,7 +204,7 @@ getSectionContents(const COFFObjectFile *Obj,
     return EC;
   if (std::error_code EC = Obj->getSectionContents(Section, Contents))
     return EC;
-  return object_error::success;
+  return std::error_code();
 }
 
 // Given a vector of relocations for a section and an offset into this section
@@ -217,7 +217,7 @@ static std::error_code resolveSymbolName(const std::vector<RelocationRef> &Rels,
     return EC;
   if (std::error_code EC = Sym.getName(Name))
     return EC;
-  return object_error::success;
+  return std::error_code();
 }
 
 static void printCOFFSymbolAddress(llvm::raw_ostream &Out,
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 1460fb0f0ab..1152a154b4d 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -400,7 +400,7 @@ static std::error_code getRelocationValueString(const ELFObjectFile<ELFT> *Obj,
   }
   if (Result.empty())
     Result.append(res.begin(), res.end());
-  return object_error::success;
+  return std::error_code();
 }
 
 static std::error_code getRelocationValueString(const ELFObjectFileBase *Obj,
@@ -425,7 +425,7 @@ static std::error_code getRelocationValueString(const COFFObjectFile *Obj,
   if (std::error_code EC = SymI->getName(SymName))
     return EC;
   Result.append(SymName.begin(), SymName.end());
-  return object_error::success;
+  return std::error_code();
 }
 
 static void printRelocationTargetName(const MachOObjectFile *O,
@@ -569,7 +569,7 @@ static std::error_code getRelocationValueString(const MachOObjectFile *Obj,
     // Generic relocation types...
     switch (Type) {
     case MachO::GENERIC_RELOC_PAIR: // prints no info
-      return object_error::success;
+      return std::error_code();
     case MachO::GENERIC_RELOC_SECTDIFF: {
       DataRefImpl RelNext = Rel;
       Obj->moveRelocationNext(RelNext);
@@ -667,7 +667,7 @@ static std::error_code getRelocationValueString(const MachOObjectFile *Obj,
 
   fmt.flush();
   Result.append(fmtbuf.begin(), fmtbuf.end());
-  return object_error::success;
+  return std::error_code();
 }
 
 static std::error_code getRelocationValueString(const RelocationRef &Rel,