本文整理汇总了C++中LDefinition::isPreset方法的典型用法代码示例。如果您正苦于以下问题：C++ LDefinition::isPreset方法的具体用法？C++ LDefinition::isPreset怎么用？C++ LDefinition::isPreset使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LDefinition的用法示例。
在下文中一共展示了LDefinition::isPreset方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: outputOf
//.........这里部分代码省略.........
from = inputOf(*ins);
}
if (def->policy() == LDefinition::MUST_REUSE_INPUT) {
// MUST_REUSE_INPUT is implemented by allocating an output
// register and moving the input to it. Register hints are
// used to avoid unnecessary moves. We give the input an
// LUse::ANY policy to avoid allocating a register for the
// input.
LUse *inputUse = ins->getOperand(def->getReusedInput())->toUse();
JS_ASSERT(inputUse->policy() == LUse::REGISTER);
JS_ASSERT(inputUse->usedAtStart());
*inputUse = LUse(inputUse->virtualRegister(), LUse::ANY, /* usedAtStart = */ true);
}
LiveInterval *interval = vregs[def].getInterval(0);
interval->setFrom(from);
// Ensure that if there aren't any uses, there's at least
// some interval for the output to go into.
if (interval->numRanges() == 0) {
if (!interval->addRangeAtHead(from, from.next()))
return false;
}
live->remove(def->virtualRegister());
}
}
for (size_t i = 0; i < ins->numTemps(); i++) {
LDefinition *temp = ins->getTemp(i);
if (temp->isBogusTemp())
continue;
if (ins->isCall()) {
JS_ASSERT(temp->isPreset());
continue;
}
if (temp->policy() == LDefinition::PRESET) {
AnyRegister reg = temp->output()->toRegister();
if (!addFixedRangeAtHead(reg, inputOf(*ins), outputOf(*ins)))
return false;
} else {
if (!vregs[temp].getInterval(0)->addRangeAtHead(inputOf(*ins), outputOf(*ins)))
return false;
}
}
DebugOnly<bool> hasUseRegister = false;
DebugOnly<bool> hasUseRegisterAtStart = false;
for (LInstruction::InputIterator alloc(**ins); alloc.more(); alloc.next()) {
if (alloc->isUse()) {
LUse *use = alloc->toUse();
// The first instruction, LLabel, has no uses.
JS_ASSERT(inputOf(*ins) > outputOf(block->firstId()));
// Call uses should always be at-start or fixed, since the fixed intervals
// use all registers.
JS_ASSERT_IF(ins->isCall() && !alloc.isSnapshotInput(),
use->isFixedRegister() || use->usedAtStart());
#ifdef DEBUG
// Don't allow at-start call uses if there are temps of the same kind,
// so that we don't assign the same register.
if (ins->isCall() && use->usedAtStart()) {