diff --git a/lib/AsmParser/Lexer.l b/lib/AsmParser/Lexer.l
index 9cfe9fd78e5..faddcb16d51 100644
--- a/lib/AsmParser/Lexer.l
+++ b/lib/AsmParser/Lexer.l
@@ -147,7 +147,7 @@ HexFPConstant 0x[0-9A-Fa-f]+
 {Comment}       { /* Ignore comments for now */ }
 
 begin           { return BEGINTOK; }
-end             { return END; }
+end             { return ENDTOK; }
 true            { return TRUE;  }
 false           { return FALSE; }
 declare         { return DECLARE; }
diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index 697609a3fa5..d1feec81e1f 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -671,7 +671,7 @@ Module *RunVMAsmParser(const string &Filename, FILE *F) {
 %type  <StrVal>  OptVAR_ID OptAssign
 
 
-%token IMPLEMENTATION TRUE FALSE BEGINTOK END DECLARE GLOBAL CONSTANT UNINIT
+%token IMPLEMENTATION TRUE FALSE BEGINTOK ENDTOK DECLARE GLOBAL CONSTANT UNINIT
 %token TO EXCEPT DOTDOTDOT STRING NULL_TOK CONST INTERNAL OPAQUE
 
 // Basic Block Terminating Operators 
@@ -1205,13 +1205,17 @@ FunctionHeaderH : OptInternal TypesV STRINGCONSTANT '(' ArgList ')' {
   }
 }
 
-FunctionHeader : FunctionHeaderH ConstPool BEGINTOK {
+BEGIN : BEGINTOK | '{';                // Allow BEGIN or '{' to start a function
+
+FunctionHeader : FunctionHeaderH BEGIN {
   $$ = CurMeth.CurrentFunction;
 
   // Resolve circular types before we parse the body of the method.
   ResolveTypes(CurMeth.LateResolveTypes);
 }
 
+END : ENDTOK | '}';                    // Allow end of '}' to end a function
+
 Function : BasicBlockList END {
   $$ = $1;
 }