1 files changed, 55 insertions, 90 deletions
diff --git a/lib/Parse/AttributeList.cpp b/lib/Parse/AttributeList.cpp
index 224a31cd5a5e..344ce9e90e55 100644
--- a/lib/Parse/AttributeList.cpp
+++ b/lib/Parse/AttributeList.cpp
@@ -13,6 +13,7 @@
 
 #include "clang/Parse/AttributeList.h"
 #include "clang/Basic/IdentifierTable.h"
+#include "llvm/ADT/StringSwitch.h"
 using namespace clang;
 
 AttributeList::AttributeList(IdentifierInfo *aName, SourceLocation aLoc,
@@ -52,94 +53,58 @@ AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
     AttrName = AttrName.substr(2, AttrName.size() - 4);
 
   // FIXME: Hand generating this is neither smart nor efficient.
-  const char *Str = AttrName.data();
-  switch (AttrName.size()) {
-  case 4:
-    if (!memcmp(Str, "weak", 4)) return AT_weak;
-    if (!memcmp(Str, "pure", 4)) return AT_pure;
-    if (!memcmp(Str, "mode", 4)) return AT_mode;
-    if (!memcmp(Str, "used", 4)) return AT_used;
-    break;
-  case 5:
-    if (!memcmp(Str, "alias", 5)) return AT_alias;
-    if (!memcmp(Str, "const", 5)) return AT_const;
-    break;
-  case 6:
-    if (!memcmp(Str, "packed", 6)) return AT_packed;
-    if (!memcmp(Str, "malloc", 6)) return AT_malloc;
-    if (!memcmp(Str, "format", 6)) return AT_format;
-    if (!memcmp(Str, "unused", 6)) return AT_unused;
-    if (!memcmp(Str, "blocks", 6)) return AT_blocks;
-    break;
-  case 7:
-    if (!memcmp(Str, "aligned", 7)) return AT_aligned;
-    if (!memcmp(Str, "cleanup", 7)) return AT_cleanup;
-    if (!memcmp(Str, "nodebug", 7)) return AT_nodebug;
-    if (!memcmp(Str, "nonnull", 7)) return AT_nonnull;
-    if (!memcmp(Str, "nothrow", 7)) return AT_nothrow;
-    if (!memcmp(Str, "objc_gc", 7)) return AT_objc_gc;
-    if (!memcmp(Str, "regparm", 7)) return AT_regparm;
-    if (!memcmp(Str, "section", 7)) return AT_section;
-    if (!memcmp(Str, "stdcall", 7)) return AT_stdcall;
-    break;
-  case 8:
-    if (!memcmp(Str, "annotate", 8)) return AT_annotate;
-    if (!memcmp(Str, "noreturn", 8)) return AT_noreturn;
-    if (!memcmp(Str, "noinline", 8)) return AT_noinline;
-    if (!memcmp(Str, "fastcall", 8)) return AT_fastcall;
-    if (!memcmp(Str, "iboutlet", 8)) return AT_IBOutlet;
-    if (!memcmp(Str, "sentinel", 8)) return AT_sentinel;
-    if (!memcmp(Str, "NSObject", 8)) return AT_nsobject;
-    break;
-  case 9:
-    if (!memcmp(Str, "dllimport", 9)) return AT_dllimport;
-    if (!memcmp(Str, "dllexport", 9)) return AT_dllexport;
-    if (!memcmp(Str, "may_alias", 9)) return IgnoredAttribute; // FIXME: TBAA
-    break;
-  case 10:
-    if (!memcmp(Str, "deprecated", 10)) return AT_deprecated;
-    if (!memcmp(Str, "visibility", 10)) return AT_visibility;
-    if (!memcmp(Str, "destructor", 10)) return AT_destructor;
-    if (!memcmp(Str, "format_arg", 10)) return AT_format_arg;
-    if (!memcmp(Str, "gnu_inline", 10)) return AT_gnu_inline;
-    break;
-  case 11:
-    if (!memcmp(Str, "weak_import", 11)) return AT_weak_import;
-    if (!memcmp(Str, "vector_size", 11)) return AT_vector_size;
-    if (!memcmp(Str, "constructor", 11)) return AT_constructor;
-    if (!memcmp(Str, "unavailable", 11)) return AT_unavailable;
-    break;
-  case 12:
-    if (!memcmp(Str, "overloadable", 12)) return AT_overloadable;
-    break;
-  case 13:
-    if (!memcmp(Str, "address_space", 13)) return AT_address_space;
-    if (!memcmp(Str, "always_inline", 13)) return AT_always_inline;
-    if (!memcmp(Str, "vec_type_hint", 13)) return IgnoredAttribute;
-    break;
-  case 14:
-    if (!memcmp(Str, "objc_exception", 14)) return AT_objc_exception;
-    break;
-  case 15:
-    if (!memcmp(Str, "ext_vector_type", 15)) return AT_ext_vector_type;
-    break;
-  case 17:
-    if (!memcmp(Str, "transparent_union", 17)) return AT_transparent_union;
-    if (!memcmp(Str, "analyzer_noreturn", 17)) return AT_analyzer_noreturn;
-    break;
-  case 18:
-    if (!memcmp(Str, "warn_unused_result", 18)) return AT_warn_unused_result;
-    break;
-  case 19:
-    if (!memcmp(Str, "ns_returns_retained", 19)) return AT_ns_returns_retained;
-    if (!memcmp(Str, "cf_returns_retained", 19)) return AT_cf_returns_retained;
-    break;
-  case 20:
-    if (!memcmp(Str, "reqd_work_group_size", 20)) return AT_reqd_wg_size;
-  case 22:
-    if (!memcmp(Str, "no_instrument_function", 22))
-      return AT_no_instrument_function;
-    break;
-  }
-  return UnknownAttribute;
+  return llvm::StringSwitch<AttributeList::Kind>(AttrName)
+    .Case("weak", AT_weak)
+    .Case("pure", AT_pure)
+    .Case("mode", AT_mode)
+    .Case("used", AT_used)
+    .Case("alias", AT_alias)
+    .Case("const", AT_const)
+    .Case("packed", AT_packed)
+    .Case("malloc", AT_malloc)
+    .Case("format", AT_format)
+    .Case("unused", AT_unused)
+    .Case("blocks", AT_blocks)
+    .Case("aligned", AT_aligned)
+    .Case("cleanup", AT_cleanup)
+    .Case("nodebug", AT_nodebug)
+    .Case("nonnull", AT_nonnull)
+    .Case("nothrow", AT_nothrow)
+    .Case("objc_gc", AT_objc_gc)
+    .Case("regparm", AT_regparm)
+    .Case("section", AT_section)
+    .Case("stdcall", AT_stdcall)
+    .Case("annotate", AT_annotate)
+    .Case("noreturn", AT_noreturn)
+    .Case("noinline", AT_noinline)
+    .Case("fastcall", AT_fastcall)
+    .Case("iboutlet", AT_IBOutlet)
+    .Case("sentinel", AT_sentinel)
+    .Case("NSObject", AT_nsobject)
+    .Case("dllimport", AT_dllimport)
+    .Case("dllexport", AT_dllexport)
+    .Case("may_alias", IgnoredAttribute) // FIXME: TBAA
+    .Case("deprecated", AT_deprecated)
+    .Case("visibility", AT_visibility)
+    .Case("destructor", AT_destructor)
+    .Case("format_arg", AT_format_arg)
+    .Case("gnu_inline", AT_gnu_inline)
+    .Case("weak_import", AT_weak_import)
+    .Case("vector_size", AT_vector_size)
+    .Case("constructor", AT_constructor)
+    .Case("unavailable", AT_unavailable)
+    .Case("overloadable", AT_overloadable)
+    .Case("address_space", AT_address_space)
+    .Case("always_inline", AT_always_inline)
+    .Case("vec_type_hint", IgnoredAttribute)
+    .Case("objc_exception", AT_objc_exception)
+    .Case("ext_vector_type", AT_ext_vector_type)
+    .Case("transparent_union", AT_transparent_union)
+    .Case("analyzer_noreturn", AT_analyzer_noreturn)
+    .Case("warn_unused_result", AT_warn_unused_result)
+    .Case("ns_returns_retained", AT_ns_returns_retained)
+    .Case("cf_returns_retained", AT_cf_returns_retained)
+    .Case("reqd_work_group_size", AT_reqd_wg_size)
+    .Case("no_instrument_function", AT_no_instrument_function)
+    .Default(UnknownAttribute);
 }