Fixing COMPARE and tweaking ABS/NEG.

src/alloy/backend/x64/x64_emitter.h

@@ -37,24 +37,26 @@ enum RegisterFlags {
 
 enum XmmConst {
   XMMZero               = 0,
-  XMMOne                = 1,
-  XMMNegativeOne        = 2,
-  XMMMaskX16Y16         = 3,
-  XMMFlipX16Y16         = 4,
-  XMMFixX16Y16          = 5,
-  XMMNormalizeX16Y16    = 6,
-  XMM3301               = 7,
-  XMMSignMaskPS         = 8,
-  XMMSignMaskPD         = 9,
-  XMMByteSwapMask       = 10,
-  XMMPermuteControl15   = 11,
-  XMMPackD3DCOLOR       = 12,
-  XMMUnpackD3DCOLOR     = 13,
-  XMMOneOver255         = 14,
-  XMMShiftMaskPS        = 15,
-  XMMShiftByteMask      = 16,
-  XMMUnsignedDwordMax   = 17,
-  XMM255                = 18,
+  XMMOne,
+  XMMNegativeOne,
+  XMMMaskX16Y16,
+  XMMFlipX16Y16,
+  XMMFixX16Y16,
+  XMMNormalizeX16Y16,
+  XMM3301,
+  XMMSignMaskPS,
+  XMMSignMaskPD,
+  XMMAbsMaskPS,
+  XMMAbsMaskPD,
+  XMMByteSwapMask,
+  XMMPermuteControl15,
+  XMMPackD3DCOLOR,
+  XMMUnpackD3DCOLOR,
+  XMMOneOver255,
+  XMMShiftMaskPS,
+  XMMShiftByteMask,
+  XMMUnsignedDwordMax,
+  XMM255,
 };
 
 // Unfortunately due to the design of xbyak we have to pass this to the ctor.