LSL, LSR, B.cond (https://github.com/Shopify/ruby/pull/303)

* LSL and LSR

* B.cond

* Move A64 files around to make more sense

* offset -> byte_offset for bcond

1 files changed, 20 insertions, 0 deletions

diff --git a/yjit/src/asm/arm64/arg/condition.rs b/yjit/src/asm/arm64/arg/condition.rs
new file mode 100644
index 0000000000..db269726d7
--- /dev/null
+++ b/yjit/src/asm/arm64/arg/condition.rs
@@ -0,0 +1,20 @@
+/// Various instructions in A64 can have condition codes attached. This enum
+/// includes all of the various kinds of conditions along with their respective
+/// encodings.
+pub enum Condition {
+    EQ = 0b0000, // equal to
+    NE = 0b0001, // not equal to
+    CS = 0b0010, // carry set (alias for HS)
+    CC = 0b0011, // carry clear (alias for LO)
+    MI = 0b0100, // minus, negative
+    PL = 0b0101, // positive or zero
+    VS = 0b0110, // signed overflow
+    VC = 0b0111, // no signed overflow
+    HI = 0b1000, // greater than (unsigned)
+    LS = 0b1001, // less than or equal to (unsigned)
+    GE = 0b1010, // greater than or equal to (signed)
+    LT = 0b1011, // less than (signed)
+    GT = 0b1100, // greater than (signed)
+    LE = 0b1101, // less than or equal to (signed)
+    AL = 0b1110, // always
+}