Renaming xe::cpu::frontend to xe::cpu::ppc.

src/xenia/cpu/ppc/testing/instr_cntlzw.s

@@ -0,0 +1,73 @@
+test_cntlzw_1:
+  #_ REGISTER_IN r5 0
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0
+  #_ REGISTER_OUT r6 32
+
+test_cntlzw_1_constant:
+  li r5, 0
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0
+  #_ REGISTER_OUT r6 32
+
+test_cntlzw_2:
+  #_ REGISTER_IN r5 1
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 1
+  #_ REGISTER_OUT r6 31
+
+test_cntlzw_2_constant:
+  li r5, 1
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 1
+  #_ REGISTER_OUT r6 31
+
+test_cntlzw_3:
+  #_ REGISTER_IN r5 0xFFFFFFFF
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0xFFFFFFFF
+  #_ REGISTER_OUT r6 0
+
+test_cntlzw_3_constant:
+  li r5, -1
+  srwi r5, r5, 0
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0xFFFFFFFF
+  #_ REGISTER_OUT r6 0
+
+test_cntlzw_4:
+  #_ REGISTER_IN r5 0x7FFFFFFF
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0x7FFFFFFF
+  #_ REGISTER_OUT r6 1
+
+test_cntlzw_4_constant:
+  li r5, -1
+  srwi r5, r5, 1
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0x7FFFFFFF
+  #_ REGISTER_OUT r6 1
+
+test_cntlzw_5:
+  #_ REGISTER_IN r5 0xFFFFFFFF00000001
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0xFFFFFFFF00000001
+  #_ REGISTER_OUT r6 31
+
+test_cntlzw_5_constant:
+  li r5, -1
+  sldi r5, r5, 32
+  addi r5, r5, 1
+  cntlzw r6, r5
+  blr
+  #_ REGISTER_OUT r5 0xFFFFFFFF00000001
+  #_ REGISTER_OUT r6 31