(left_shift_overflows): Remove; unused.

From-SVN: r11021

(left_shift_overflows): Remove; unused.
From-SVN: r11021
15c577a8 · Richard Kenner · 3298a1b1 · 15c577a8
Commit 15c577a8 authored Jan 16, 1996 by Richard Kenner
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gcc/fold-const.c
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--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -84,9 +84,6 @@ static tree strip_compound_expr PROTO((tree, tree));
 #define BRANCH_COST 1
 #endif

-/* Yield nonzero if a signed left shift of A by B bits overflows.  */
-#define left_shift_overflows(a, b)  ((a)  !=  ((a) << (b)) >> (b))
-
 /* Suppose A1 + B1 = SUM1, using 2's complement arithmetic ignoring overflow.
   Suppose A, B and SUM have the same respective signs as A1, B1, and SUM1.
   Then this yields nonzero if overflow occurred during the addition.