r300/compiler: Abs doesn't cancel Negate (in the conversion to native swizzles)

NOTE: This is a candidate for the 7.9 and 7.10 branches.

src/mesa/drivers/dri/r300/compiler/r300_fragprog_swizzle.c

@@ -98,9 +98,6 @@ static int r300_swizzle_is_native(rc_opcode opcode, struct rc_src_register reg)
 	unsigned int relevant;
 	int j;
 
-	if (reg.Abs)
-		reg.Negate = RC_MASK_NONE;
-
 	if (opcode == RC_OPCODE_KIL ||
 	    opcode == RC_OPCODE_TEX ||
 	    opcode == RC_OPCODE_TXB ||
@@ -140,9 +137,6 @@ static void r300_swizzle_split(
 		struct rc_src_register src, unsigned int mask,
 		struct rc_swizzle_split * split)
 {
-	if (src.Abs)
-		src.Negate = RC_MASK_NONE;
-
 	split->NumPhases = 0;
 
 	while(mask) {

src/mesa/drivers/dri/r300/compiler/r500_fragprog.c

@@ -103,9 +103,6 @@ static int r500_swizzle_is_native(rc_opcode opcode, struct rc_src_register reg)
 		return 0;
 	} else {
 		/* ALU instructions support almost everything */
-		if (reg.Abs)
-			return 1;
-
 		relevant = 0;
 		for(i = 0; i < 3; ++i) {
 			unsigned int swz = GET_SWZ(reg.Swizzle, i);