[PATCH] adjust types of locals in libgcc's popcount helpers

[Jan Beulich]

Since 64-bit targets generally can do 32-bit operations as (sometimes
even
more: x86-64) efficiently than 64-bit ones, there is no need for the
__popcount?I2 helpers to internally use variables wider than int.
Additionally
the result type of the functions is 'int' anyway, so this also avoids
a
pointless conversion when returning.

Bootstrapped and tested on x86_64-unknown-linux-gnu.

2005-12-02  Jan Beulich  <jbeulich@novell.com>

	* libgcc2.c (__popcountSI2): Don't use wide type for iterator
and
	result.
	(__popcountDI2): Likewise.

---
/home/jbeulich/src/gcc/trunk/2005-12-01/gcc/libgcc2.c	2005-12-01
10:48:55.000000000 +0100
+++ 2005-12-01/gcc/libgcc2.c	2005-12-02 08:49:14.000000000 +0100
@@ -744,7 +744,7 @@ const UQItype __popcount_tab[256] =
 int
 __popcountSI2 (UWtype x)
 {
-  UWtype i, ret = 0;
+  int i, ret = 0;
 
   for (i = 0; i < W_TYPE_SIZE; i += 8)
     ret += __popcount_tab[(x >> i) & 0xff];
@@ -758,7 +758,7 @@ __popcountSI2 (UWtype x)
 int
 __popcountDI2 (UDWtype x)
 {
-  UWtype i, ret = 0;
+  int i, ret = 0;
 
   for (i = 0; i < 2*W_TYPE_SIZE; i += 8)
     ret += __popcount_tab[(x >> i) & 0xff];

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