IRUnit::IRUnit(Offset initialBcOffset)
: m_nextBlockId(0)
, m_nextOpndId(0)
, m_nextInstId(0)
, m_bcOff(initialBcOffset)
, m_entry(defBlock())
{
}
IRUnit::IRUnit(TransContext context) : m_context(context)
{
// Setup m_entry after property initialization, since it depends on
// the value of m_defHint.
// For Optimize translations, the entry block's profCount is
// adjusted later in translateRegion.
m_entry = defBlock();
m_startNanos = HPHP::Timer::GetThreadCPUTimeNanos();
}
Block* makeExitSlow(IRGS& env) {
auto const exit = defBlock(env, Block::Hint::Unlikely);
BlockPusher bp(*env.irb, makeMarker(env, bcOff(env)), exit);
interpOne(env, *env.currentNormalizedInstruction);
// If it changes the PC, InterpOneCF will get us to the new location.
if (!opcodeChangesPC(env.currentNormalizedInstruction->op())) {
gen(env, Jmp, makeExit(env, nextBcOff(env)));
}
return exit;
}
Block* makeExitOpt(IRGS& env, TransID transId) {
assertx(!isInlining(env));
auto const targetBcOff = bcOff(env);
auto const exit = defBlock(env, Block::Hint::Unlikely);
BlockPusher blockPusher(*env.irb, makeMarker(env, targetBcOff), exit);
auto const data = ReqRetranslateOptData {
transId,
SrcKey { curSrcKey(env), targetBcOff },
bcSPOffset(env)
};
gen(env, ReqRetranslateOpt, data, sp(env), fp(env));
return exit;
}
IRUnit::IRUnit(TransContext context)
: m_context(context)
, m_entry(defBlock())
{}
