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0da0308b84
* libguile/vm-engine.c: Renumber opcodes, and take the opportunity to fold recent additions into more logical places. Be more precise when describing the encoding of operands, to shuffle local references only and not constants, immediates, or other such values. (SP_REF, SP_SET): New helpers. (BR_BINARY, BR_ARITHMETIC): Take full 24-bit operands. Our shuffle strategy is to emit push when needed to bring far locals near, then pop afterwards, shuffling away far destination values as needed; but that doesn't work for conditionals, unless we introduce a trampoline. Let's just do the simple thing for now. Native compilation will use condition codes. (push, pop, drop): Back from the dead! We'll only use these for temporary shuffling though, when an opcode can't address the full 24-bit range. (long-fmov): New instruction, like long-mov but relative to the frame pointer. (load-typed-array, make-array): Don't use a compressed encoding so that we can avoid the shuffling case. It would be a pain, given that they have so many operands already. * module/language/bytecode.scm (compute-instruction-arity): Update for new instrution word encodings. * module/system/vm/assembler.scm: Update to expose some opcodes directly, without the need for shuffling wrappers. Adapt to instruction word encodings change. * module/system/vm/disassembler.scm (disassembler): Adapt to instruction coding change. |
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