Implements stage 6: tests passing

bench/tests/op/ori.s

@@ -1,4 +1,9 @@
-# expected: 00000000, 00000010
+# expected: 000001FF, FFFFFFFF
     .text
 _start:
+    addi x1, x0, 0x100
+    ori x31, x1, 0x0FF
+
+    addi x1, x0, -1
+    ori x31, x1, 0x010
 

bench/tests/op/slli.s

@@ -0,0 +1,11 @@
+# expected: 000003FC, 80000000, 00000000
+    .text
+_start:
+    addi x1, x0, 0x0FF
+    slli x31, x1, 2
+
+    addi x1, x0, 0x001
+    slli x31, x1, 31
+
+    addi x1, x0, 0x0F0
+    slli x31, x1, 31

bench/tests/op/slti.s

@@ -0,0 +1,15 @@
+# expected: 00000000, 00000001, 00000001, 00000000
+    .text
+_start:
+    addi x1, x0, (-1)
+    slti x31, x1, (-37)
+
+    addi x1, x0, (-37)
+    slti x31, x1, (-1)
+
+    addi x1, x0, (-38)
+    slti x31, x1, 29
+
+    addi x1, x0, 129
+    slti x31, x1, (-7)
+

bench/tests/op/sltiu.s

@@ -0,0 +1,11 @@
+# expected: 00000001, 00000001, 00000000
+    .text
+_start:
+    addi x1, x0, 0
+    sltiu x31, x1, (-1)
+
+    addi x1, x0, 98
+    sltiu x31, x1, 99
+
+    addi x1, x0, 99
+    sltiu x31, x1, 98

bench/tests/op/srai.s

@@ -0,0 +1,11 @@
+# expected: 000000FF, FFFFFFFF, 00000000
+    .text
+_start:
+    addi x1, x0, 0x3FC
+    srai x31, x1, 2
+
+    lui x1, 0xA0000
+    srai x31, x1, 31
+
+    lui x1, 0x0A000
+    srai x31, x1, 31

bench/tests/op/srli.s

@@ -0,0 +1,11 @@
+# expected: 000000FF, 00000001, 00000000
+    .text
+_start:
+    addi x1, x0, 0x3FC
+    srli x31, x1, 2
+
+    lui x1, 0xA0000
+    srli x31, x1, 31
+
+    lui x1, 0x0A000
+    srli x31, x1, 31

bench/tests/op/xori.s

@@ -0,0 +1,12 @@
+# expected: 00000000, 000001EF
+    .text
+_start:
+    # 1 XOR 1 should equal 0000000
+    addi x1, x0, -1
+    xori x31, x1, -1
+
+    addi x1, x0, 0x1BC
+
+    # Xor is involutive and commutative, applying it twice should give us the original operand
+    xori x1, x1, 0x1EF
+    xori x31, x1, 0x1BC