diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0cf656b85eb..d395b031176 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2002-12-18  Aldy Hernandez  <aldyh@redhat.com>
+
+	* config/rs6000/altivec.h (vec_cmplt macro): Reverse arguments in
+	macro.
+	(vec_cmplt C++ functions): Reverse arguments.
+
 2002-11-18  Geoffrey Keating  <geoffk@apple.com>
 
 	* config/rs6000/t-rs6000: Move contents to t-fprules,
diff --git a/gcc/config/rs6000/altivec.h b/gcc/config/rs6000/altivec.h
index f1387c0c898..1e2d8c8d408 100644
--- a/gcc/config/rs6000/altivec.h
+++ b/gcc/config/rs6000/altivec.h
@@ -1102,43 +1102,43 @@ vec_cmple (vector float a1, vector float a2)
 inline vector signed char
 vec_cmplt (vector unsigned char a1, vector unsigned char a2)
 {
-  return (vector signed char) __builtin_altivec_vcmpgtub ((vector signed char) a1, (vector signed char) a2);
+  return (vector signed char) __builtin_altivec_vcmpgtub ((vector signed char) a2, (vector signed char) a1);
 }
 
 inline vector signed char
 vec_cmplt (vector signed char a1, vector signed char a2)
 {
-  return (vector signed char) __builtin_altivec_vcmpgtsb ((vector signed char) a1, (vector signed char) a2);
+  return (vector signed char) __builtin_altivec_vcmpgtsb ((vector signed char) a2, (vector signed char) a1);
 }
 
 inline vector signed short
 vec_cmplt (vector unsigned short a1, vector unsigned short a2)
 {
-  return (vector signed short) __builtin_altivec_vcmpgtuh ((vector signed short) a1, (vector signed short) a2);
+  return (vector signed short) __builtin_altivec_vcmpgtuh ((vector signed short) a2, (vector signed short) a1);
 }
 
 inline vector signed short
 vec_cmplt (vector signed short a1, vector signed short a2)
 {
-  return (vector signed short) __builtin_altivec_vcmpgtsh ((vector signed short) a1, (vector signed short) a2);
+  return (vector signed short) __builtin_altivec_vcmpgtsh ((vector signed short) a2, (vector signed short) a1);
 }
 
 inline vector signed int
 vec_cmplt (vector unsigned int a1, vector unsigned int a2)
 {
-  return (vector signed int) __builtin_altivec_vcmpgtuw ((vector signed int) a1, (vector signed int) a2);
+  return (vector signed int) __builtin_altivec_vcmpgtuw ((vector signed int) a2, (vector signed int) a1);
 }
 
 inline vector signed int
 vec_cmplt (vector signed int a1, vector signed int a2)
 {
-  return (vector signed int) __builtin_altivec_vcmpgtsw ((vector signed int) a1, (vector signed int) a2);
+  return (vector signed int) __builtin_altivec_vcmpgtsw ((vector signed int) a2, (vector signed int) a1);
 }
 
 inline vector signed int
 vec_cmplt (vector float a1, vector float a2)
 {
-  return (vector signed int) __builtin_altivec_vcmpgtfp ((vector float) a1, (vector float) a2);
+  return (vector signed int) __builtin_altivec_vcmpgtfp ((vector float) a2, (vector float) a1);
 }
 
 /* vec_ctf */
@@ -6523,7 +6523,7 @@ __ch (__bin_args_eq (vector unsigned char, (a1), vector unsigned char, (a2)), \
 
 #define vec_cmple(a1, a2) __builtin_altivec_vcmpgefp ((a1), (a2))
 
-#define vec_cmplt(a1, a2) \
+#define vec_cmplt(a2, a1) \
 __ch (__bin_args_eq (vector unsigned char, (a1), vector unsigned char, (a2)), \
       ((vector signed char) __builtin_altivec_vcmpgtub ((vector signed char) (a1), (vector signed char) (a2))), \
 __ch (__bin_args_eq (vector signed char, (a1), vector signed char, (a2)), \