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New instructions load-f64, load-u64

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* libguile/instructions.c (FOR_EACH_INSTRUCTION_WORD_TYPE): Add word
  types for immediate f64 and u64 values.
  (TYPE_WIDTH): Bump up by a bit, now that we have 32 word types.
  (NOP, parse_instruction): Use 64-bit meta type.

* libguile/vm-engine.c (load-f64, load-u64): New instructions.

* module/language/bytecode.scm (compute-instruction-arity): Add parser
  for new instruction word types.

* module/language/cps/compile-bytecode.scm (compile-function): Add
  special-cased assemblers for new instructions, and also for scm->u64
  and u64->scm which I missed before.

* module/language/cps/effects-analysis.scm (load-f64, load-u64): New
  instructions.

* module/language/cps/slot-allocation.scm (compute-needs-slot): load-f64
  and load-u64 don't need slots.
  (compute-var-representations): Update for new instructions.

* module/language/cps/specialize-primcalls.scm (specialize-primcalls):
  Specialize scm->f64 and scm->u64 to make-f64 and make-u64.

* module/language/cps/types.scm (load-f64, load-u64): Wire up to type
  inference, though currently type inference only runs before
  specialization.

* module/language/cps/utils.scm (compute-defining-expressions): For some
  reason I don't understand, it's possible to see two definitions that
  are equal but not equal? here.  Allow for now.
  (compute-constant-values): Punch through type conversions to get
  constant u64/f64 values.

* module/system/vm/assembler.scm (assembler): Support for new word
  types.  Export the new assemblers.
This commit is contained in:
Andy Wingo 2015-11-20 16:14:32 +01:00
parent bdfa1c1b42
commit f34688ad25
11 changed files with 119 additions and 23 deletions
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13
module/system/vm/assembler.scm
View file

@ -168,7 +168,11 @@
(emit-class-of* . emit-class-of)
emit-make-array
(emit-scm->f64* . emit-scm->f64)
emit-load-f64
(emit-f64->scm* . emit-f64->scm)
(emit-scm->u64* . emit-scm->u64)
emit-load-u64
(emit-u64->scm* . emit-u64->scm)
(emit-bv-length* . emit-bv-length)
(emit-bv-u8-ref* . emit-bv-u8-ref)
(emit-bv-s8-ref* . emit-bv-s8-ref)
@ -568,7 +572,16 @@ later by the linker."
(error "make-long-immediate unavailable for this target"))
(emit asm (ash (object-address imm) -32))
(emit asm (logand (object-address imm) (1- (ash 1 32)))))
((AF32 f64)
(let ((u64 (u64vector-ref (f64vector f64) 0)))
(emit asm (ash u64 -32))
(emit asm (logand u64 (1- (ash 1 32))))))
((AU32 u64)
(emit asm (ash u64 -32))
(emit asm (logand u64 (1- (ash 1 32)))))
((B32))
((BU32))
((BF32))
((N32 label)
(record-far-label-reference asm label)
(emit asm 0))