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Add jtable instruction

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* doc/ref/vm.texi (Instruction Set): Document new v32-x8-l24 instruction
  kind.
  (Branch Instructions): Document jtable.
* libguile/instructions.c (FOR_EACH_INSTRUCTION_WORD_TYPE): Add
  V32_X8_L24.
* libguile/jit.c (compile_jtable, compile_jtable_slow):
  (COMPILE_X8_S24__V32_X8_L24, analyze): Add stub JIT compiler
  implementation.
* libguile/vm-engine.c (jtable): New instruction.
* module/language/bytecode.scm (instruction-arity): Deprecate.
* module/system/vm/assembler.scm (encoder, assembler): Add V32_X8_L24
  case.
* module/system/vm/disassembler.scm (u32-ref, s32-ref): Move definitions
  to expansion-time only.
  (define-op-handlers): New definition, replacing visit-opcodes.
  (disassemblers, jump-parsers, stack-effect-parsers, clobber-parsers):
  Rework in terms of define-op-handlers.  Default case becomes #f, and
  add support for jtable.
  (disassemble-one, instruction-relative-jump-targets)
  (instruction-stack-size-after, instruction-slot-clobbers): Inline
  default case in the lookup procedure, not copied in the handler
  vector.
  (compute-labels): Add jtable case.
  (instruction-lengths-vector, instruction-length): Rework to allow
  variable-length instructions, and mark jtable as being
  variable-length.
  (instruction-has-fallthrough?): Add jtable to the no-fallthrough
  set.
This commit is contained in:
Andy Wingo 2020-07-23 12:05:14 +02:00
parent 5e1748f751
commit bb7fa5bdc2
8 changed files with 381 additions and 264 deletions
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6
libguile/instructions.c
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@ -1,4 +1,4 @@
/* Copyright 2001,2009-2013,2017-2018
/* Copyright 2001,2009-2013,2017-2018,2020
Free Software Foundation, Inc.
This file is part of Guile.
@ -74,7 +74,9 @@ SCM_SYMBOL (sym_bang, "!");
M(B1_X7_S24) \
M(B1_X7_F24) \
M(B1_X31) \
M(C16_C16)
M(C16_C16) \
M(V32_X8_L24) /* Length-prefixed array of X8_L24. */ \
/**/
#define TYPE_WIDTH 6