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libgcc2.c (__addvSI3, [...]): Use unsigned arithmetic.

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* libgcc2.c (__addvSI3, __addvsi3, __addvDI3, __subvSI3,
	__subvsi3, __subvDI3, __negvSI2, __negvsi2, __negvDI2, __absvSI2,
	__absvsi2, __absvDI2): Use unsigned arithmetic.

From-SVN: r132815
This commit is contained in:
Joseph Myers 2008-03-02 13:11:19 +00:00 • committed by Joseph Myers
parent f3130d75de
commit 9677aa89d0
2 changed files with 18 additions and 12 deletions
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6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2008-03-02 Joseph Myers <joseph@codesourcery.com>
* libgcc2.c (__addvSI3, __addvsi3, __addvDI3, __subvSI3,
__subvsi3, __subvDI3, __negvSI2, __negvsi2, __negvDI2, __absvSI2,
__absvsi2, __absvDI2): Use unsigned arithmetic.
2008-03-02 Andi Kleen <ak@suse.de>
Richard Guenther <rguenther@suse.de>

24
gcc/libgcc2.c
View file

@ -84,7 +84,7 @@ __negdi2 (DWtype u)
Wtype
__addvSI3 (Wtype a, Wtype b)
{
const Wtype w = a + b;
const Wtype w = (UWtype) a + (UWtype) b;
if (b >= 0 ? w < a : w > a)
abort ();
@ -95,7 +95,7 @@ __addvSI3 (Wtype a, Wtype b)
SItype
__addvsi3 (SItype a, SItype b)
{
const SItype w = a + b;
const SItype w = (USItype) a + (USItype) b;
if (b >= 0 ? w < a : w > a)
abort ();
@ -109,7 +109,7 @@ __addvsi3 (SItype a, SItype b)
DWtype
__addvDI3 (DWtype a, DWtype b)
{
const DWtype w = a + b;
const DWtype w = (UDWtype) a + (UDWtype) b;
if (b >= 0 ? w < a : w > a)
abort ();
@ -122,7 +122,7 @@ __addvDI3 (DWtype a, DWtype b)
Wtype
__subvSI3 (Wtype a, Wtype b)
{
const Wtype w = a - b;
const Wtype w = (UWtype) a - (UWtype) b;
if (b >= 0 ? w > a : w < a)
abort ();
@ -133,7 +133,7 @@ __subvSI3 (Wtype a, Wtype b)
SItype
__subvsi3 (SItype a, SItype b)
{
const SItype w = a - b;
const SItype w = (USItype) a - (USItype) b;
if (b >= 0 ? w > a : w < a)
abort ();
@ -147,7 +147,7 @@ __subvsi3 (SItype a, SItype b)
DWtype
__subvDI3 (DWtype a, DWtype b)
{
const DWtype w = a - b;
const DWtype w = (UDWtype) a - (UDWtype) b;
if (b >= 0 ? w > a : w < a)
abort ();
@ -187,7 +187,7 @@ __mulvsi3 (SItype a, SItype b)
Wtype
__negvSI2 (Wtype a)
{
const Wtype w = -a;
const Wtype w = -(UWtype) a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
@ -198,7 +198,7 @@ __negvSI2 (Wtype a)
SItype
__negvsi2 (SItype a)
{
const SItype w = -a;
const SItype w = -(USItype) a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
@ -212,7 +212,7 @@ __negvsi2 (SItype a)
DWtype
__negvDI2 (DWtype a)
{
const DWtype w = -a;
const DWtype w = -(UDWtype) a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
@ -231,7 +231,7 @@ __absvSI2 (Wtype a)
#ifdef L_negvsi2
w = __negvSI2 (a);
#else
w = -a;
w = -(UWtype) a;
if (w < 0)
abort ();
@ -249,7 +249,7 @@ __absvsi2 (SItype a)
#ifdef L_negvsi2
w = __negvsi2 (a);
#else
w = -a;
w = -(USItype) a;
if (w < 0)
abort ();
@ -270,7 +270,7 @@ __absvDI2 (DWtype a)
#ifdef L_negvdi2
w = __negvDI2 (a);
#else
w = -a;
w = -(UDWtype) a;
if (w < 0)
abort ();