void generateICFastPath(
State& state, CodeBlock* codeBlock, GeneratedFunction generatedFunction,
StackMaps::RecordMap& recordMap, DescriptorType& ic, size_t sizeOfIC)
{
VM& vm = state.graph.m_vm;
StackMaps::RecordMap::iterator iter = recordMap.find(ic.stackmapID());
if (iter == recordMap.end()) {
// It was optimized out.
return;
}
Vector<StackMaps::Record>& records = iter->value;
RELEASE_ASSERT(records.size() == ic.m_generators.size());
for (unsigned i = records.size(); i--;) {
StackMaps::Record& record = records[i];
auto generator = ic.m_generators[i];
CCallHelpers fastPathJIT(&vm, codeBlock);
generator.generateFastPath(fastPathJIT);
char* startOfIC =
bitwise_cast<char*>(generatedFunction) + record.instructionOffset;
LinkBuffer linkBuffer(vm, fastPathJIT, startOfIC, sizeOfIC);
// Note: we could handle the !isValid() case. We just don't appear to have a
// reason to do so, yet.
RELEASE_ASSERT(linkBuffer.isValid());
MacroAssembler::AssemblerType_T::fillNops(
startOfIC + linkBuffer.size(), sizeOfIC - linkBuffer.size());
state.finalizer->sideCodeLinkBuffer->link(
ic.m_slowPathDone[i], CodeLocationLabel(startOfIC + sizeOfIC));
linkBuffer.link(
generator.slowPathJump(),
state.finalizer->sideCodeLinkBuffer->locationOf(generator.slowPathBegin()));
generator.finalize(linkBuffer, *state.finalizer->sideCodeLinkBuffer);
}
}
void generateICFastPath(
State& state, CodeBlock* codeBlock, GeneratedFunction generatedFunction,
StackMaps::RecordMap& recordMap, DescriptorType& ic, size_t sizeOfIC)
{
VM& vm = state.graph.m_vm;
StackMaps::RecordMap::iterator iter = recordMap.find(ic.stackmapID());
if (iter == recordMap.end()) {
// It was optimized out.
return;
}
Vector<StackMaps::Record>& records = iter->value;
RELEASE_ASSERT(records.size() == ic.m_generators.size());
for (unsigned i = records.size(); i--;) {
StackMaps::Record& record = records[i];
auto generator = ic.m_generators[i];
CCallHelpers fastPathJIT(&vm, codeBlock);
generator.generateFastPath(fastPathJIT);
char* startOfIC =
bitwise_cast<char*>(generatedFunction) + record.instructionOffset;
generateInlineIfPossibleOutOfLineIfNot(state, vm, codeBlock, fastPathJIT, startOfIC, sizeOfIC, "inline cache fast path", [&] (LinkBuffer& linkBuffer, CCallHelpers&, bool) {
state.finalizer->sideCodeLinkBuffer->link(ic.m_slowPathDone[i],
CodeLocationLabel(startOfIC + sizeOfIC));
linkBuffer.link(generator.slowPathJump(),
state.finalizer->sideCodeLinkBuffer->locationOf(generator.slowPathBegin()));
generator.finalize(linkBuffer, *state.finalizer->sideCodeLinkBuffer);
});
}
}