[cfe-commits] r46594 - /cfe/trunk/AST/Expr.cpp

[Anders Carlsson]

Author: andersca
Date: Wed Jan 30 20:13:57 2008
New Revision: 46594

URL: http://llvm.org/viewvc/llvm-project?rev=46594&view=rev
Log:
Make CallExpr::isBuiltinConstantExpr slightly more efficient.

Modified:
    cfe/trunk/AST/Expr.cpp

Modified: cfe/trunk/AST/Expr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/AST/Expr.cpp?rev=46594&r1=46593&r2=46594&view=diff

==============================================================================
--- cfe/trunk/AST/Expr.cpp (original)
+++ cfe/trunk/AST/Expr.cpp Wed Jan 30 20:13:57 2008
@@ -130,9 +130,16 @@
   if (!DRE)
     return false;
 
-  // We have a DeclRefExpr.
-  if (strcmp(DRE->getDecl()->getName(), 
-             "__builtin___CFStringMakeConstantString") == 0)
+  const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl());
+  if (!FDecl)
+    return false;
+    
+  unsigned builtinID = FDecl->getIdentifier()->getBuiltinID();
+  if (!builtinID)
+    return false;
+
+  // We have a builtin that is a constant expression
+  if (builtinID == Builtin::BI__builtin___CFStringMakeConstantString)
     return true;
   return false;
 }