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tentative support for fast allocs

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It seems that the MEM reference type is
meaningless in too many positions.
Because of this, it is unclear if we
should keep it or just introduce a
OAddr instruction that only accepts
slots.

Regardless of the above, the spilling
module needs to use the new slot_()
function, also, the emit function needs
to fetch the size of the stack frame
from the slot[] array.

The naming is still very transitional,
here is a list of all bogus names I can
think of:

  - SLOT()
  - Tmp.spill
  - slot_
This commit is contained in:
Quentin Carbonneaux 2015-08-14 15:54:25 -04:00
parent 0f3846e261
commit 67d3c2834d
5 changed files with 170 additions and 27 deletions
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9
lisc/parse.c
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@ -26,7 +26,6 @@ OpDesc opdesc[NOp] = {
[OLoadus] = { "loadus", 1, 0 },
[OLoadsb] = { "loadsb", 1, 0 },
[OLoadub] = { "loadub", 1, 0 },
[OAlloc] = { "alloc", 1, 1 },
[OCopy] = { "copy", 1, 1 },
[ONop] = { "nop", 0, 0 },
[OSwap] = { "swap", 2, 2 },
@ -34,6 +33,9 @@ OpDesc opdesc[NOp] = {
[OXDiv] = { "xdiv", 1, 1 },
[OXCmpw] = { "xcmpw", 2, 1 },
[OXCmpl] = { "xcmpl", 2, 1 },
[OAlloc] = { "alloc4", 1, 1 },
[OAlloc+1] = { "alloc8", 1, 1 },
[OAlloc+2] = { "alloc16", 1, 1 },
#define X(c) \
[OCmp+C##c] = { "c" #c, 2, 0 }, \
@ -559,7 +561,10 @@ printref(Ref r, Fn *fn, FILE *f)
}
break;
case RSlot:
fprintf(f, "$%d", r.val);
fprintf(f, "S%d", r.val);
break;
case RMem:
fprintf(f, "M%d", r.val);
break;
}
return "";