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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1066 PrepareForBailoutForId(stmt->ContinueId(), NO_REGISTERS); | 1066 PrepareForBailoutForId(stmt->ContinueId(), NO_REGISTERS); |
1067 SetExpressionPosition(stmt->cond(), stmt->condition_position()); | 1067 SetExpressionPosition(stmt->cond(), stmt->condition_position()); |
1068 VisitForControl(stmt->cond(), | 1068 VisitForControl(stmt->cond(), |
1069 &stack_check, | 1069 &stack_check, |
1070 loop_statement.break_label(), | 1070 loop_statement.break_label(), |
1071 &stack_check); | 1071 &stack_check); |
1072 | 1072 |
1073 // Check stack before looping. | 1073 // Check stack before looping. |
1074 PrepareForBailoutForId(stmt->BackEdgeId(), NO_REGISTERS); | 1074 PrepareForBailoutForId(stmt->BackEdgeId(), NO_REGISTERS); |
1075 __ bind(&stack_check); | 1075 __ bind(&stack_check); |
1076 EmitStackCheck(stmt); | 1076 EmitStackCheck(stmt, &body); |
1077 __ jmp(&body); | 1077 __ jmp(&body); |
1078 | 1078 |
1079 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); | 1079 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); |
1080 __ bind(loop_statement.break_label()); | 1080 __ bind(loop_statement.break_label()); |
1081 decrement_loop_depth(); | 1081 decrement_loop_depth(); |
1082 } | 1082 } |
1083 | 1083 |
1084 | 1084 |
1085 void FullCodeGenerator::VisitWhileStatement(WhileStatement* stmt) { | 1085 void FullCodeGenerator::VisitWhileStatement(WhileStatement* stmt) { |
1086 Comment cmnt(masm_, "[ WhileStatement"); | 1086 Comment cmnt(masm_, "[ WhileStatement"); |
1087 Label test, body; | 1087 Label test, body; |
1088 | 1088 |
1089 Iteration loop_statement(this, stmt); | 1089 Iteration loop_statement(this, stmt); |
1090 increment_loop_depth(); | 1090 increment_loop_depth(); |
1091 | 1091 |
1092 // Emit the test at the bottom of the loop. | 1092 // Emit the test at the bottom of the loop. |
1093 __ jmp(&test); | 1093 __ jmp(&test); |
1094 | 1094 |
1095 PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS); | 1095 PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS); |
1096 __ bind(&body); | 1096 __ bind(&body); |
1097 Visit(stmt->body()); | 1097 Visit(stmt->body()); |
1098 | 1098 |
1099 // Emit the statement position here as this is where the while | 1099 // Emit the statement position here as this is where the while |
1100 // statement code starts. | 1100 // statement code starts. |
1101 __ bind(loop_statement.continue_label()); | 1101 __ bind(loop_statement.continue_label()); |
1102 SetStatementPosition(stmt); | 1102 SetStatementPosition(stmt); |
1103 | 1103 |
1104 // Check stack before looping. | 1104 // Check stack before looping. |
1105 EmitStackCheck(stmt); | 1105 EmitStackCheck(stmt, &body); |
1106 | 1106 |
1107 __ bind(&test); | 1107 __ bind(&test); |
1108 VisitForControl(stmt->cond(), | 1108 VisitForControl(stmt->cond(), |
1109 &body, | 1109 &body, |
1110 loop_statement.break_label(), | 1110 loop_statement.break_label(), |
1111 loop_statement.break_label()); | 1111 loop_statement.break_label()); |
1112 | 1112 |
1113 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); | 1113 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); |
1114 __ bind(loop_statement.break_label()); | 1114 __ bind(loop_statement.break_label()); |
1115 decrement_loop_depth(); | 1115 decrement_loop_depth(); |
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1138 SetStatementPosition(stmt); | 1138 SetStatementPosition(stmt); |
1139 if (stmt->next() != NULL) { | 1139 if (stmt->next() != NULL) { |
1140 Visit(stmt->next()); | 1140 Visit(stmt->next()); |
1141 } | 1141 } |
1142 | 1142 |
1143 // Emit the statement position here as this is where the for | 1143 // Emit the statement position here as this is where the for |
1144 // statement code starts. | 1144 // statement code starts. |
1145 SetStatementPosition(stmt); | 1145 SetStatementPosition(stmt); |
1146 | 1146 |
1147 // Check stack before looping. | 1147 // Check stack before looping. |
1148 EmitStackCheck(stmt); | 1148 EmitStackCheck(stmt, &body); |
1149 | 1149 |
1150 __ bind(&test); | 1150 __ bind(&test); |
1151 if (stmt->cond() != NULL) { | 1151 if (stmt->cond() != NULL) { |
1152 VisitForControl(stmt->cond(), | 1152 VisitForControl(stmt->cond(), |
1153 &body, | 1153 &body, |
1154 loop_statement.break_label(), | 1154 loop_statement.break_label(), |
1155 loop_statement.break_label()); | 1155 loop_statement.break_label()); |
1156 } else { | 1156 } else { |
1157 __ jmp(&body); | 1157 __ jmp(&body); |
1158 } | 1158 } |
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1380 } | 1380 } |
1381 | 1381 |
1382 return false; | 1382 return false; |
1383 } | 1383 } |
1384 | 1384 |
1385 | 1385 |
1386 #undef __ | 1386 #undef __ |
1387 | 1387 |
1388 | 1388 |
1389 } } // namespace v8::internal | 1389 } } // namespace v8::internal |
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