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comparison src/share/vm/opto/c2compiler.cpp @ 10278:6f3fd5150b67

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6934604: enable parts of EliminateAutoBox by default Summary: Resurrected autobox elimination code and enabled part of it by default. Reviewed-by: roland, twisti
author kvn
date Wed, 08 May 2013 15:08:01 -0700
parents 1d1603768966
children 469216acdb28 d2907f74462e
comparison
equal deleted inserted replaced
10277:aabf54ccedb1 10278:6f3fd5150b67
123 initialize(); 123 initialize();
124 } 124 }
125 bool subsume_loads = SubsumeLoads; 125 bool subsume_loads = SubsumeLoads;
126 bool do_escape_analysis = DoEscapeAnalysis && 126 bool do_escape_analysis = DoEscapeAnalysis &&
127 !env->jvmti_can_access_local_variables(); 127 !env->jvmti_can_access_local_variables();
128 bool eliminate_boxing = EliminateAutoBox;
128 while (!env->failing()) { 129 while (!env->failing()) {
129 // Attempt to compile while subsuming loads into machine instructions. 130 // Attempt to compile while subsuming loads into machine instructions.
130 Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis); 131 Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing);
131 132
132 133
133 // Check result and retry if appropriate. 134 // Check result and retry if appropriate.
134 if (C.failure_reason() != NULL) { 135 if (C.failure_reason() != NULL) {
135 if (C.failure_reason_is(retry_no_subsuming_loads())) { 136 if (C.failure_reason_is(retry_no_subsuming_loads())) {
138 continue; // retry 139 continue; // retry
139 } 140 }
140 if (C.failure_reason_is(retry_no_escape_analysis())) { 141 if (C.failure_reason_is(retry_no_escape_analysis())) {
141 assert(do_escape_analysis, "must make progress"); 142 assert(do_escape_analysis, "must make progress");
142 do_escape_analysis = false; 143 do_escape_analysis = false;
144 continue; // retry
145 }
146 if (C.has_boxed_value()) {
147 // Recompile without boxing elimination regardless failure reason.
148 assert(eliminate_boxing, "must make progress");
149 eliminate_boxing = false;
143 continue; // retry 150 continue; // retry
144 } 151 }
145 // Pass any other failure reason up to the ciEnv. 152 // Pass any other failure reason up to the ciEnv.
146 // Note that serious, irreversible failures are already logged 153 // Note that serious, irreversible failures are already logged
147 // on the ciEnv via env->record_method_not_compilable(). 154 // on the ciEnv via env->record_method_not_compilable().