reallocate OperandCode, convert disparate registers to array

also remove redundant assignments of operand_count and some OperandSpec,
bulk-assign all registers and operands on entry to `read_instr`. this
all, taken together, shaves off about 7 cycles per decode.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/long_mode/evex.rs b/src/long_mode/evex.rs
index 483747b..7f456e7 100644
--- a/src/long_mode/evex.rs
+++ b/src/long_mode/evex.rs
@@ -1,6 +1,7 @@
 // use crate::long_mode::{OperandSpec, DecodeError, RegSpec, RegisterBank, Instruction, Opcode};
-use crate::long_mode::{DecodeError, RegSpec, RegisterBank, Instruction, Opcode};
+use crate::long_mode::{Arch, DecodeError, RegSpec, RegisterBank, Instruction, Opcode};
 use crate::long_mode::{read_modrm, read_E_vex, read_imm_unsigned};
+use yaxpeax_arch::Reader;
 
 const DEFAULT_EVEX_REGISTER_SIZE: RegisterBank = RegisterBank::Q;
 const DEFAULT_EVEX_REGISTER_WIDTH: u8 = 8;