Module predecode 

Pre-decode PVM bytecode into a flat instruction stream for fast codegen.

Replaces the byte-by-byte bitmask scan in the codegen loop with a single upfront decode pass. The codegen then iterates a &[PreDecodedInst] slice, eliminating redundant compute_skip() and decode_args() calls.

Structs

PreDecodedInst

Pre-decoded PVM instruction. Stores everything the codegen and the gas simulator need per instruction.

Functions

compute_gas_blocks

Compute gas block start bitmap from raw code+bitmask (no full Args decoding). Returns Vec<bool> indexed by PVM byte offset. True = this PC starts a gas block.

predecode

Pre-decode all instructions from raw code+bitmask into a flat array.