/*
* Save the current jitStack status to the label.
* This is done when the label is referenced the first time.
*/
static int _ILJitLabelSaveStack(ILJITCoder *coder, ILJITLabel *label)
{
int coderStackHeight = _ILJitStackHeight(coder);
#ifdef _IL_JIT_ENABLE_INLINE
int coderStackBase;
if(coder->currentInlineContext)
{
coderStackBase = coder->currentInlineContext->stackBase;
coderStackHeight -= coderStackBase;
}
else
{
coderStackBase = 0;
}
#else /* !_IL_JIT_ENABLE_INLINE */
int coderStackBase = 0;
#endif /* !_IL_JIT_ENABLE_INLINE */
if(((label->labelType & (_IL_JIT_LABEL_NORMAL |
_IL_JIT_LABEL_STARTCATCH)) != 0) &&
(coderStackHeight > 0))
{
int current = 0;
ILJitValue *stack = ILMemStackAllocItem(&(coder->stackStates),
coderStackHeight * sizeof(ILJitValue));
if(!stack)
{
return 0;
}
/* Now save the current stack state. */
for(current = 0; current < coderStackHeight; current++)
{
ILJitStackItem *stackItem = _ILJitStackItemGet(coder, coderStackBase + current);
stack[current] = _ILJitStackItemValue(*stackItem);
if(jit_value_is_constant(_ILJitStackItemValue(*stackItem)))
{
/* We have to handle this case different. */
/* Create a local value of the type of the constant. */
ILJitValue temp = jit_value_create(coder->jitFunction,
jit_value_get_type(_ILJitStackItemValue(*stackItem)));
/* and store the value of the constant in the new temporary. */
jit_insn_store(coder->jitFunction, temp, _ILJitStackItemValue(*stackItem));
/* Now replace the constant with the new temporary. */
stack[current] = temp;
_ILJitStackItemSetValue(*stackItem, temp);
}
else if(_ILJitStackItemNeedsDupOnLabel(*stackItem))
{
ILJitValue temp = jit_insn_dup(coder->jitFunction,
_ILJitStackItemValue(*stackItem));
stack[current] = temp;
_ILJitStackItemSetValue(*stackItem, temp);
}
}
label->jitStack = stack;
label->stackSize = coderStackHeight;
}
return 1;
}
jit_value jit_function::insn_dup(const jit_value& value)
{
value_wrap(jit_insn_dup(func, value.raw()));
}
