fold-const.c (negate_expr_p, [...]): Handle COMPLEX_EXPR.

	* fold-const.c (negate_expr_p, fold_negate_expr): Handle
	COMPLEX_EXPR.
	
testsuite:
	* gcc.dg/builtins-20.c: Add more cases.

From-SVN: r121511

gcc/ChangeLog

+2007-02-02  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* fold-const.c (negate_expr_p, fold_negate_expr): Handle
+	COMPLEX_EXPR.
+
 2007-02-02  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>
 
 	PR target/29682

gcc/fold-const.c

@@ -1011,6 +1011,10 @@ negate_expr_p (tree t)
       return negate_expr_p (TREE_REALPART (t))
 	     && negate_expr_p (TREE_IMAGPART (t));
 
+    case COMPLEX_EXPR:
+      return negate_expr_p (TREE_OPERAND (t, 0))
+	     && negate_expr_p (TREE_OPERAND (t, 1));
+
     case PLUS_EXPR:
       if (HONOR_SIGN_DEPENDENT_ROUNDING (TYPE_MODE (type))
 	  || HONOR_SIGNED_ZEROS (TYPE_MODE (type)))
@@ -1134,6 +1138,13 @@ fold_negate_expr (tree t)
       }
       break;
 
+    case COMPLEX_EXPR:
+      if (negate_expr_p (t))
+	return fold_build2 (COMPLEX_EXPR, type,
+			    fold_negate_expr (TREE_OPERAND (t, 0)),
+			    fold_negate_expr (TREE_OPERAND (t, 1)));
+      break;
+      
     case NEGATE_EXPR:
       return TREE_OPERAND (t, 0);
 

gcc/testsuite/ChangeLog

+2007-02-02  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* gcc.dg/builtins-20.c: Add more cases.
+
 2007-02-02  Maxim Kuvyrkov  <mkuvyrkov@ispras.ru>
 
 	PR target/29682

gcc/testsuite/gcc.dg/builtins-20.c

@@ -197,6 +197,24 @@ void test2(double x, double y)
   
   if (fmax (x,fmin(y,x)) != x)
     link_error ();
+
+  if ((__complex__ double) x != -(__complex__ double) (-x))
+    link_error ();
+
+  if (x*1i != -(-x*1i))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x+(y-x)*1i))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x-(x-y)*1i))
+    link_error ();
+
+  if (ccos(tan(x)+sin(y)*1i) != ccos(-tan(-x)+-sin(-y)*1i))
+    link_error ();
+
+  if (ccos(tan(x)+sin(x-y)*1i) != ccos(-tan(-x)-sin(y-x)*1i))
+    link_error ();
 }
 
 void test3(__complex__ double x, __complex__ double y, int i)
@@ -389,6 +407,21 @@ void test2f(float x, float y)
   
   if (fmaxf (x,fminf(y,x)) != x)
     link_error ();
+
+  if ((__complex__ float) x != -(__complex__ float) (-x))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x+(y-x)*1i))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x-(x-y)*1i))
+    link_error ();
+
+  if (ccosf(tanf(x)+sinf(y)*1i) != ccosf(-tanf(-x)+-sinf(-y)*1i))
+    link_error ();
+
+  if (ccosf(tanf(x)+sinf(x-y)*1i) != ccosf(-tanf(-x)-sinf(y-x)*1i))
+    link_error ();
 }
 
 void test3f(__complex__ float x, __complex__ float y, int i)
@@ -581,6 +614,21 @@ void test2l(long double x, long double y)
   
   if (fmaxl (x,fminl(y,x)) != x)
     link_error ();
+
+  if ((__complex__ long double) x != -(__complex__ long double) (-x))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x+(y-x)*1i))
+    link_error ();
+
+  if (x+(x-y)*1i != -(-x-(x-y)*1i))
+    link_error ();
+
+  if (ccosl(tanl(x)+sinl(y)*1i) != ccosl(-tanl(-x)+-sinl(-y)*1i))
+    link_error ();
+
+  if (ccosl(tanl(x)+sinl(x-y)*1i) != ccosl(-tanl(-x)-sinl(y-x)*1i))
+    link_error ();
 }
 
 void test3l(__complex__ long double x, __complex__ long double y, int i)