void Compilation::emit_lir() {
CHECK_BAILOUT();
LIRGenerator gen(this, method());
{
PhaseTraceTime timeit(_t_lirGeneration);
hir()->iterate_linear_scan_order(&gen);
}
CHECK_BAILOUT();
{
PhaseTraceTime timeit(_t_linearScan);
LinearScan* allocator = new LinearScan(hir(), &gen, frame_map());
set_allocator(allocator);
// Assign physical registers to LIR operands using a linear scan algorithm.
allocator->do_linear_scan();
CHECK_BAILOUT();
_max_spills = allocator->max_spills();
}
if (BailoutAfterLIR) {
if (PrintLIR && !bailed_out()) {
print_LIR(hir()->code());
}
bailout("Bailing out because of -XX:+BailoutAfterLIR");
}
}
void Compilation::bailout(const char* msg) {
assert(msg != NULL, "bailout message must exist");
if (!bailed_out()) {
// keep first bailout message
if (PrintBailouts) tty->print_cr("compilation bailout: %s", msg);
_bailout_msg = msg;
}
}
Compilation::Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
int osr_bci, BufferBlob* buffer_blob)
: _compiler(compiler)
, _env(env)
, _log(env->log())
, _method(method)
, _osr_bci(osr_bci)
, _hir(NULL)
, _max_spills(-1)
, _frame_map(NULL)
, _masm(NULL)
, _has_exception_handlers(false)
, _has_fpu_code(true) // pessimistic assumption
, _would_profile(false)
, _has_unsafe_access(false)
, _has_method_handle_invokes(false)
, _bailout_msg(NULL)
, _exception_info_list(NULL)
, _allocator(NULL)
, _next_id(0)
, _next_block_id(0)
, _code(buffer_blob)
, _has_access_indexed(false)
, _current_instruction(NULL)
#ifndef PRODUCT
, _last_instruction_printed(NULL)
#endif // PRODUCT
{
PhaseTraceTime timeit(_t_compile);
_arena = Thread::current()->resource_area();
_env->set_compiler_data(this);
_exception_info_list = new ExceptionInfoList();
_implicit_exception_table.set_size(0);
compile_method();
if (bailed_out()) {
_env->record_method_not_compilable(bailout_msg(), !TieredCompilation);
if (is_profiling()) {
// Compilation failed, create MDO, which would signal the interpreter
// to start profiling on its own.
_method->ensure_method_data();
}
} else if (is_profiling()) {
ciMethodData *md = method->method_data_or_null();
if (md != NULL) {
md->set_would_profile(_would_profile);
}
}
}