Shift tests and fix for bad sradi decoding.

src/alloy/frontend/ppc/test/instr_slw.s

@@ -0,0 +1,80 @@
+test_slw_1:
+  #_ REGISTER_IN r4 1
+  #_ REGISTER_IN r5 0
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 1
+  #_ REGISTER_OUT r4 1
+  #_ REGISTER_OUT r5 0
+
+test_slw_2:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 0
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0x00000000FFFFFFFF
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 0
+
+test_slw_3:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 1
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0x00000000FFFFFFFE
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 1
+
+test_slw_4:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 63
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 63
+
+test_slw_5:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 64
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0x00000000FFFFFFFF
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 64
+
+test_slw_6:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 100
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 100
+
+test_slw_7:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 30
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0x00000000c0000000
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 30
+
+test_slw_8:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 31
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0x0000000080000000
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 31
+
+test_slw_9:
+  #_ REGISTER_IN r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_IN r5 32
+  slw r3, r4, r5
+  blr
+  #_ REGISTER_OUT r3 0
+  #_ REGISTER_OUT r4 0xFFFFFFFFFFFFFFFF
+  #_ REGISTER_OUT r5 32