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6667610: (Escape Analysis) retry compilation without EA if it fails

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During split unique types EA could exceed nodes limit and fail the method compilation.

Reviewed-by: rasbold
This commit is contained in:
Vladimir Kozlov 2008-03-06 10:30:17 -08:00
parent 17458c9660
commit bf7f5e1887
7 changed files with 57 additions and 11 deletions
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13
hotspot/src/share/vm/opto/c2compiler.cpp
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@ -35,6 +35,9 @@ extern const int register_save_type[];
const char* C2Compiler::retry_no_subsuming_loads() {
return "retry without subsuming loads";
}
const char* C2Compiler::retry_no_escape_analysis() {
return "retry without escape analysis";
}
void C2Compiler::initialize_runtime() {
// Check assumptions used while running ADLC
@ -101,17 +104,23 @@ void C2Compiler::compile_method(ciEnv* env,
initialize();
}
bool subsume_loads = true;
bool do_escape_analysis = DoEscapeAnalysis;
while (!env->failing()) {
// Attempt to compile while subsuming loads into machine instructions.
Compile C(env, this, target, entry_bci, subsume_loads);
Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis);
// Check result and retry if appropriate.
if (C.failure_reason() != NULL) {
if (C.failure_reason_is(retry_no_subsuming_loads())) {
if (C.failure_reason_is(retry_no_subsuming_loads())) {
assert(subsume_loads, "must make progress");
subsume_loads = false;
continue; // retry
}
if (C.failure_reason_is(retry_no_escape_analysis())) {
assert(do_escape_analysis, "must make progress");
do_escape_analysis = false;
continue; // retry
}
// Pass any other failure reason up to the ciEnv.
// Note that serious, irreversible failures are already logged
// on the ciEnv via env->record_method_not_compilable().