Documentation update

Author: Claudiu Zissulescu

gcc/ChangeLog.ARC

@@ -1,3 +1,8 @@
+2013-06-18 Claudiu Zissulescu <[email protected]>
+
+	* doc/extend.texi: Update __builtin_arc_sr description.
+	* doc/invoke.texi: Update mmul32x16 description.
+
 2013-05-28 Claudiu Zissulescu <[email protected]>
 
 	* config/arc/arc.c (%+):New punctuation character.

gcc/doc/extend.texi

@@ -9078,12 +9078,12 @@ sleep  @var{a}
 @end example
 @end deftypefn
 
-@deftypefn {Built-in Function}  void __builtin_arc_sr (unsigned int @var{auxr}, unsigned int @var{val})
-The first argument, @var{auxv}, is the address of an auxiliary
-register, the second argument, @var{val}, is a compile time constant
-to be written to the register.  Generates:
+@deftypefn {Built-in Function}  void __builtin_arc_sr (unsigned int @var{val}, unsigned int @var{auxr})
+Store the 32-bit word held in source operand 1 (@var{val}) into the
+auxiliary register whose address is obtained from the source operand 2
+(@var{auxr}). Generates:
 @example
-sr  @var{auxr}, [@var{val}]
+sr  @var{val}, [@var{auxr}]
 @end example
 @end deftypefn
 

gcc/doc/invoke.texi

@@ -11392,7 +11392,8 @@ is equivalent with -mmpy-option=1
 
 @item -mmul32x16
 @opindex mmul32x16
-Generate 32x16 bit multiply and mac instructions.  Not valid for ARC EM.
+Generate 32x16 bit multiply and mac instructions. Only valid for ARC
+6xx cores.
 
 @item -mmul64
 @opindex mmul64