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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 1475 | 1475 |
| 1476 | 1476 |
| 1477 void LCodeGen::DoBranch(LBranch* instr) { | 1477 void LCodeGen::DoBranch(LBranch* instr) { |
| 1478 int true_block = chunk_->LookupDestination(instr->true_block_id()); | 1478 int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1479 int false_block = chunk_->LookupDestination(instr->false_block_id()); | 1479 int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1480 | 1480 |
| 1481 Representation r = instr->hydrogen()->representation(); | 1481 Representation r = instr->hydrogen()->representation(); |
| 1482 if (r.IsInteger32()) { | 1482 if (r.IsInteger32()) { |
| 1483 Register reg = ToRegister(instr->input()); | 1483 Register reg = ToRegister(instr->input()); |
| 1484 __ cmp(reg, Operand(0)); | 1484 __ cmp(reg, Operand(0)); |
| 1485 EmitBranch(true_block, false_block, nz); | 1485 EmitBranch(true_block, false_block, ne); |
| 1486 } else if (r.IsDouble()) { | 1486 } else if (r.IsDouble()) { |
| 1487 DoubleRegister reg = ToDoubleRegister(instr->input()); | 1487 DoubleRegister reg = ToDoubleRegister(instr->input()); |
| 1488 Register scratch = scratch0(); | 1488 Register scratch = scratch0(); |
| 1489 | 1489 |
| 1490 // Test the double value. Zero and NaN are false. | 1490 // Test the double value. Zero and NaN are false. |
| 1491 __ VFPCompareAndLoadFlags(reg, 0.0, scratch); | 1491 __ VFPCompareAndLoadFlags(reg, 0.0, scratch); |
| 1492 __ tst(scratch, Operand(kVFPZConditionFlagBit | kVFPVConditionFlagBit)); | 1492 __ tst(scratch, Operand(kVFPZConditionFlagBit | kVFPVConditionFlagBit)); |
| 1493 EmitBranch(true_block, false_block, ne); | 1493 EmitBranch(true_block, false_block, ne); |
| 1494 } else { | 1494 } else { |
| 1495 ASSERT(r.IsTagged()); | 1495 ASSERT(r.IsTagged()); |
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| 1533 | 1533 |
| 1534 // The conversion stub doesn't cause garbage collections so it's | 1534 // The conversion stub doesn't cause garbage collections so it's |
| 1535 // safe to not record a safepoint after the call. | 1535 // safe to not record a safepoint after the call. |
| 1536 __ bind(&call_stub); | 1536 __ bind(&call_stub); |
| 1537 ToBooleanStub stub(reg); | 1537 ToBooleanStub stub(reg); |
| 1538 RegList saved_regs = kJSCallerSaved | kCalleeSaved; | 1538 RegList saved_regs = kJSCallerSaved | kCalleeSaved; |
| 1539 __ stm(db_w, sp, saved_regs); | 1539 __ stm(db_w, sp, saved_regs); |
| 1540 __ CallStub(&stub); | 1540 __ CallStub(&stub); |
| 1541 __ cmp(reg, Operand(0)); | 1541 __ cmp(reg, Operand(0)); |
| 1542 __ ldm(ia_w, sp, saved_regs); | 1542 __ ldm(ia_w, sp, saved_regs); |
| 1543 EmitBranch(true_block, false_block, nz); | 1543 EmitBranch(true_block, false_block, ne); |
| 1544 } | 1544 } |
| 1545 } | 1545 } |
| 1546 } | 1546 } |
| 1547 | 1547 |
| 1548 | 1548 |
| 1549 void LCodeGen::EmitGoto(int block, LDeferredCode* deferred_stack_check) { | 1549 void LCodeGen::EmitGoto(int block, LDeferredCode* deferred_stack_check) { |
| 1550 block = chunk_->LookupDestination(block); | 1550 block = chunk_->LookupDestination(block); |
| 1551 int next_block = GetNextEmittedBlock(current_block_); | 1551 int next_block = GetNextEmittedBlock(current_block_); |
| 1552 if (block != next_block) { | 1552 if (block != next_block) { |
| 1553 // Perform stack overflow check if this goto needs it before jumping. | 1553 // Perform stack overflow check if this goto needs it before jumping. |
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| 3644 | 3644 |
| 3645 | 3645 |
| 3646 void LCodeGen::DoOsrEntry(LOsrEntry* instr) { | 3646 void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 3647 Abort("DoOsrEntry unimplemented."); | 3647 Abort("DoOsrEntry unimplemented."); |
| 3648 } | 3648 } |
| 3649 | 3649 |
| 3650 | 3650 |
| 3651 #undef __ | 3651 #undef __ |
| 3652 | 3652 |
| 3653 } } // namespace v8::internal | 3653 } } // namespace v8::internal |
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