PhaseTraceTime(TimerName timer)
: TraceTime("", &timers[timer], CITime || CITimeEach, Verbose), _log(NULL) {
if (Compilation::current() != NULL) {
_log = Compilation::current()->log();
}
if (_log != NULL) {
_log->begin_head("phase name='%s'", timer_name[timer]);
_log->stamp();
_log->end_head();
}
}
void Compilation::build_hir() {
CHECK_BAILOUT();
// setup ir
CompileLog* log = this->log();
if (log != NULL) {
log->begin_head("parse method='%d' ",
log->identify(_method));
log->stamp();
log->end_head();
}
_hir = new IR(this, method(), osr_bci());
if (log) log->done("parse");
if (!_hir->is_valid()) {
bailout("invalid parsing");
return;
}
#ifndef PRODUCT
if (PrintCFGToFile) {
CFGPrinter::print_cfg(_hir, "After Generation of HIR", true, false);
}
#endif
#ifndef PRODUCT
if (PrintCFG || PrintCFG0) { tty->print_cr("CFG after parsing"); _hir->print(true); }
if (PrintIR || PrintIR0 ) { tty->print_cr("IR after parsing"); _hir->print(false); }
#endif
_hir->verify();
if (UseC1Optimizations) {
NEEDS_CLEANUP
// optimization
PhaseTraceTime timeit(_t_optimize_blocks);
_hir->optimize_blocks();
}
_hir->verify();
_hir->split_critical_edges();
#ifndef PRODUCT
if (PrintCFG || PrintCFG1) { tty->print_cr("CFG after optimizations"); _hir->print(true); }
if (PrintIR || PrintIR1 ) { tty->print_cr("IR after optimizations"); _hir->print(false); }
#endif
_hir->verify();
// compute block ordering for code generation
// the control flow must not be changed from here on
_hir->compute_code();
if (UseGlobalValueNumbering) {
// No resource mark here! LoopInvariantCodeMotion can allocate ValueStack objects.
int instructions = Instruction::number_of_instructions();
GlobalValueNumbering gvn(_hir);
assert(instructions == Instruction::number_of_instructions(),
"shouldn't have created an instructions");
}
_hir->verify();
#ifndef PRODUCT
if (PrintCFGToFile) {
CFGPrinter::print_cfg(_hir, "Before RangeCheckElimination", true, false);
}
#endif
if (RangeCheckElimination) {
if (_hir->osr_entry() == NULL) {
PhaseTraceTime timeit(_t_rangeCheckElimination);
RangeCheckElimination::eliminate(_hir);
}
}
#ifndef PRODUCT
if (PrintCFGToFile) {
CFGPrinter::print_cfg(_hir, "After RangeCheckElimination", true, false);
}
#endif
if (UseC1Optimizations) {
// loop invariant code motion reorders instructions and range
// check elimination adds new instructions so do null check
// elimination after.
NEEDS_CLEANUP
// optimization
PhaseTraceTime timeit(_t_optimize_null_checks);
_hir->eliminate_null_checks();
}
_hir->verify();
// compute use counts after global value numbering
_hir->compute_use_counts();
#ifndef PRODUCT
if (PrintCFG || PrintCFG2) { tty->print_cr("CFG before code generation"); _hir->code()->print(true); }
if (PrintIR || PrintIR2 ) { tty->print_cr("IR before code generation"); _hir->code()->print(false, true); }
#endif
_hir->verify();
}