Remove LLVM_NOEXCEPT and replace it with noexcept

Now that we have dropped MSVC 2013, all supported compilers support
noexcept and we can drop this portability macro.

llvm-svn: 284672
diff --git a/llvm/lib/DebugInfo/CodeView/CodeViewError.cpp b/llvm/lib/DebugInfo/CodeView/CodeViewError.cpp
index e9678db..55c10c0 100644
--- a/llvm/lib/DebugInfo/CodeView/CodeViewError.cpp
+++ b/llvm/lib/DebugInfo/CodeView/CodeViewError.cpp
@@ -20,7 +20,7 @@
 // deal with the Error value directly, rather than converting to error_code.
 class CodeViewErrorCategory : public std::error_category {
 public:
-  const char *name() const LLVM_NOEXCEPT override { return "llvm.codeview"; }
+  const char *name() const noexcept override { return "llvm.codeview"; }
 
   std::string message(int Condition) const override {
     switch (static_cast<cv_error_code>(Condition)) {
diff --git a/llvm/lib/DebugInfo/MSF/MSFError.cpp b/llvm/lib/DebugInfo/MSF/MSFError.cpp
index 5272cad..1b8294e 100644
--- a/llvm/lib/DebugInfo/MSF/MSFError.cpp
+++ b/llvm/lib/DebugInfo/MSF/MSFError.cpp
@@ -20,7 +20,7 @@
 // deal with the Error value directly, rather than converting to error_code.
 class MSFErrorCategory : public std::error_category {
 public:
-  const char *name() const LLVM_NOEXCEPT override { return "llvm.msf"; }
+  const char *name() const noexcept override { return "llvm.msf"; }
 
   std::string message(int Condition) const override {
     switch (static_cast<msf_error_code>(Condition)) {
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIAError.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIAError.cpp
index 81125d2..0da877b 100644
--- a/llvm/lib/DebugInfo/PDB/DIA/DIAError.cpp
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIAError.cpp
@@ -10,7 +10,7 @@
 // deal with the Error value directly, rather than converting to error_code.
 class DIAErrorCategory : public std::error_category {
 public:
-  const char *name() const LLVM_NOEXCEPT override { return "llvm.pdb.dia"; }
+  const char *name() const noexcept override { return "llvm.pdb.dia"; }
 
   std::string message(int Condition) const override {
     switch (static_cast<dia_error_code>(Condition)) {
diff --git a/llvm/lib/DebugInfo/PDB/GenericError.cpp b/llvm/lib/DebugInfo/PDB/GenericError.cpp
index 4321013..789f3b8 100644
--- a/llvm/lib/DebugInfo/PDB/GenericError.cpp
+++ b/llvm/lib/DebugInfo/PDB/GenericError.cpp
@@ -20,7 +20,7 @@
 // deal with the Error value directly, rather than converting to error_code.
 class GenericErrorCategory : public std::error_category {
 public:
-  const char *name() const LLVM_NOEXCEPT override { return "llvm.pdb"; }
+  const char *name() const noexcept override { return "llvm.pdb"; }
 
   std::string message(int Condition) const override {
     switch (static_cast<generic_error_code>(Condition)) {
diff --git a/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp b/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
index cbce890..f4a5057 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/RawError.cpp
@@ -11,7 +11,7 @@
 // deal with the Error value directly, rather than converting to error_code.
 class RawErrorCategory : public std::error_category {
 public:
-  const char *name() const LLVM_NOEXCEPT override { return "llvm.pdb.raw"; }
+  const char *name() const noexcept override { return "llvm.pdb.raw"; }
 
   std::string message(int Condition) const override {
     switch (static_cast<raw_error_code>(Condition)) {