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implemented computed goto support

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This commit is contained in:
Araq 2013-08-13 11:21:02 +02:00
commit d53f313599
7 changed files with 116 additions and 12 deletions
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6
compiler/vm.nim
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@ -54,8 +54,8 @@ proc bailOut(c: PCtx; tos: PStackFrame) =
stackTrace(c, tos, c.exceptionInstr, errUnhandledExceptionX,
c.currentExceptionA.sons[2].strVal)
when not defined(nimHasInterpreterLoop):
{.pragma: interpreterLoop.}
when not defined(nimComputedGoto):
{.pragma: computedGoto.}
template inc(pc: ptr TInstr, diff = 1) =
inc cast[TAddress](pc), TInstr.sizeof * diff
@ -237,7 +237,7 @@ proc execute(c: PCtx, start: int) =
var tos: PStackFrame
newSeq(regs, c.prc.maxSlots)
while true:
{.interpreterLoop.}
{.computedGoto.}
let instr = c.code[pc]
let ra = instr.regA
#echo "PC ", pc, " ", c.code[pc].opcode, " ra ", ra