re PR rtl-optimization/11311 (ICE with pow and large exponent)

	PR optimization/11311
	* builtins.c (powi_cost): Fix typo.  The number of multiplications
	required is the number to reduce the argument, result, plus the
	cost of calculating the residual, val [not n, the original value].

	* gcc.c-torture/compile/20030624-1.c: New test case.

From-SVN: r68452

gcc/ChangeLog

 2003-06-24  Roger Sayle  <roger@eyesopen.com>
 
+	PR optimization/11311
+	* builtins.c (powi_cost): Fix typo.  The number of multiplications
+	required is the number to reduce the argument, result, plus the
+	cost of calculating the residual, val [not n, the original value].
+
+2003-06-24  Roger Sayle  <roger@eyesopen.com>
+
 	* config/alpha/osf5.h (TARGET_C99_FUNCTIONS): Define.
 
 2003-06-24  Richard Henderson  <rth@redhat.com>

gcc/builtins.c

@@ -2068,7 +2068,7 @@ powi_cost (HOST_WIDE_INT n)
 	}
     }
   
-  return result + powi_lookup_cost (n, cache);
+  return result + powi_lookup_cost (val, cache);
 }
 
 /* Recursive subroutine of expand_powi.  This function takes the array,

gcc/testsuite/ChangeLog

+2003-06-24  Roger Sayle  <roger@eyesopen.com>
+
+	* gcc.c-torture/compile/20030624-1.c: New test case.
+
 2003-06-24  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.c-torture/execute/string-opt-17.c: New test.

gcc/testsuite/gcc.c-torture/compile/20030624-1.c

+/* Derived from PR optimization/11311 */
+
+double pow(double, double);
+
+double foo(double x) { return pow(x,261); }
+