patch: an optimization and a triviality

Mon Dec 3 17:48:00 GMT 2001

More trivial patches. The first one I've posted earlier
- it does some constant folding even when we can't call fold.
The second one is so trivial it's embarassing - but it's the
principle of not using resources you don't need.
2001年12月03日 Per Bothner <per@bothner.com>
	* parse.y (patch_binop): Minor constant folding.
	* parse.y (build_current_thisn): Shorter 'buffer'.
Index: parse.y
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/parse.y,v
retrieving revision 1.328
diff -u -p -r1.328 parse.y

--- parse.y	2001年12月03日 19:13:40	1.328
+++ parse.y	2001年12月04日 01:22:14
@@ -8619,7 +8619,7 @@ build_current_thisn (type)
 static int saved_type_i = 0;
 static int initialized_p;
 tree decl;
- char buffer [80];
+ char buffer [24];
 int i = 0;
 /* Register SAVED_THISN and SAVED_TYPE with the garbage collector. */
@@ -13769,6 +13769,14 @@ patch_binop (node, wfl_op1, wfl_op2)
 	 TREE_TYPE (node) = boolean_type_node;
 	 error_found = 1;
 	 break;
+ 
}
+ else if (integer_zerop (op1))
+ 
{
+ 
 return code == TRUTH_ANDIF_EXPR ? op1 : op2;
+ 
}
+ else if (integer_onep (op1))
+ 
{
+ 
 return code == TRUTH_ANDIF_EXPR ? op2 : op1;
 	}
 /* The type of the conditional operators is BOOLEAN */
 prom_type = boolean_type_node;
-- 
	--Per Bothner
per@bothner.com http://www.bothner.com/per/
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