Fixing totally broken vpkd3d128 and adding new pack instructions.

src/alloy/frontend/ppc/test/bin/instr_vpkd3d128.dis

@@ -59,3 +59,39 @@ Disassembly of section .text:
 0000000000100068 <test_vpkd3d128_d3dcolor_3_3>:
   100068:	18 83 1e d0 	vpkd3d128 v4,v3,0,2,2
   10006c:	4e 80 00 20 	blr
+
+0000000000100070 <test_vpkd3d128_short2_invalid_0>:
+  100070:	18 85 1e 10 	vpkd3d128 v4,v3,1,0,0
+  100074:	4e 80 00 20 	blr
+
+0000000000100078 <test_vpkd3d128_short2_invalid_1>:
+  100078:	18 85 1e 10 	vpkd3d128 v4,v3,1,0,0
+  10007c:	4e 80 00 20 	blr
+
+0000000000100080 <test_vpkd3d128_short2_0>:
+  100080:	18 85 1e 10 	vpkd3d128 v4,v3,1,0,0
+  100084:	4e 80 00 20 	blr
+
+0000000000100088 <test_vpkd3d128_short2_1>:
+  100088:	18 85 1e 10 	vpkd3d128 v4,v3,1,0,0
+  10008c:	4e 80 00 20 	blr
+
+0000000000100090 <test_vpkd3d128_short2_2>:
+  100090:	18 85 1e 10 	vpkd3d128 v4,v3,1,0,0
+  100094:	4e 80 00 20 	blr
+
+0000000000100098 <test_vpkd3d128_float16_2_invalid_0>:
+  100098:	18 8d 1e 10 	vpkd3d128 v4,v3,3,0,0
+  10009c:	4e 80 00 20 	blr
+
+00000000001000a0 <test_vpkd3d128_float16_2_0>:
+  1000a0:	18 8d 1e 10 	vpkd3d128 v4,v3,3,0,0
+  1000a4:	4e 80 00 20 	blr
+
+00000000001000a8 <test_vpkd3d128_float16_4_invalid_0>:
+  1000a8:	18 96 1e 10 	vpkd3d128 v4,v3,1,2,0
+  1000ac:	4e 80 00 20 	blr
+
+00000000001000b0 <test_vpkd3d128_float16_4_0>:
+  1000b0:	18 96 1e 10 	vpkd3d128 v4,v3,1,2,0
+  1000b4:	4e 80 00 20 	blr

src/alloy/frontend/ppc/test/bin/instr_vpkd3d128.map

@@ -12,3 +12,12 @@
 0000000000000058 t test_vpkd3d128_d3dcolor_3_1
 0000000000000060 t test_vpkd3d128_d3dcolor_3_2
 0000000000000068 t test_vpkd3d128_d3dcolor_3_3
+0000000000000070 t test_vpkd3d128_short2_invalid_0
+0000000000000078 t test_vpkd3d128_short2_invalid_1
+0000000000000080 t test_vpkd3d128_short2_0
+0000000000000088 t test_vpkd3d128_short2_1
+0000000000000090 t test_vpkd3d128_short2_2
+0000000000000098 t test_vpkd3d128_float16_2_invalid_0
+00000000000000a0 t test_vpkd3d128_float16_2_0
+00000000000000a8 t test_vpkd3d128_float16_4_invalid_0
+00000000000000b0 t test_vpkd3d128_float16_4_0

src/alloy/frontend/ppc/test/bin/instr_vpkshss.dis

@@ -0,0 +1,13 @@
+
+/vagrant/src/alloy/frontend/ppc/test/bin//instr_vpkshss.o:     file format elf64-powerpc
+
+
+Disassembly of section .text:
+
+0000000000100000 <test_vpkshss_0>:
+  100000:	10 a3 21 8e 	vpkshss v5,v3,v4
+  100004:	4e 80 00 20 	blr
+
+0000000000100008 <test_vpkshss_1>:
+  100008:	10 a3 21 8e 	vpkshss v5,v3,v4
+  10000c:	4e 80 00 20 	blr

src/alloy/frontend/ppc/test/bin/instr_vpkshss.map

@@ -0,0 +1,2 @@
+0000000000000000 t test_vpkshss_0
+0000000000000008 t test_vpkshss_1

src/alloy/frontend/ppc/test/bin/instr_vpkswss.dis

@@ -0,0 +1,13 @@
+
+/vagrant/src/alloy/frontend/ppc/test/bin//instr_vpkswss.o:     file format elf64-powerpc
+
+
+Disassembly of section .text:
+
+0000000000100000 <test_vpkswss_0>:
+  100000:	10 a3 21 ce 	vpkswss v5,v3,v4
+  100004:	4e 80 00 20 	blr
+
+0000000000100008 <test_vpkswss_1>:
+  100008:	10 a3 21 ce 	vpkswss v5,v3,v4
+  10000c:	4e 80 00 20 	blr

src/alloy/frontend/ppc/test/bin/instr_vpkswss.map

@@ -0,0 +1,2 @@
+0000000000000000 t test_vpkswss_0
+0000000000000008 t test_vpkswss_1