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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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| 510 // Call the runtime to find the boolean value of the source and then | 510 // Call the runtime to find the boolean value of the source and then |
| 511 // translate it into control flow to the pair of labels. | 511 // translate it into control flow to the pair of labels. |
| 512 __ push(result_register()); | 512 __ push(result_register()); |
| 513 __ CallRuntime(Runtime::kToBool, 1); | 513 __ CallRuntime(Runtime::kToBool, 1); |
| 514 __ LoadRoot(ip, Heap::kTrueValueRootIndex); | 514 __ LoadRoot(ip, Heap::kTrueValueRootIndex); |
| 515 __ cmp(r0, ip); | 515 __ cmp(r0, ip); |
| 516 Split(eq, if_true, if_false, fall_through); | 516 Split(eq, if_true, if_false, fall_through); |
| 517 } | 517 } |
| 518 | 518 |
| 519 | 519 |
| 520 void FullCodeGenerator::Split(Condition cc, | 520 void FullCodeGenerator::Split(Condition cond, |
| 521 Label* if_true, | 521 Label* if_true, |
| 522 Label* if_false, | 522 Label* if_false, |
| 523 Label* fall_through) { | 523 Label* fall_through) { |
| 524 if (if_false == fall_through) { | 524 if (if_false == fall_through) { |
| 525 __ b(cc, if_true); | 525 __ b(cond, if_true); |
| 526 } else if (if_true == fall_through) { | 526 } else if (if_true == fall_through) { |
| 527 __ b(NegateCondition(cc), if_false); | 527 __ b(NegateCondition(cond), if_false); |
| 528 } else { | 528 } else { |
| 529 __ b(cc, if_true); | 529 __ b(cond, if_true); |
| 530 __ b(if_false); | 530 __ b(if_false); |
| 531 } | 531 } |
| 532 } | 532 } |
| 533 | 533 |
| 534 | 534 |
| 535 MemOperand FullCodeGenerator::EmitSlotSearch(Slot* slot, Register scratch) { | 535 MemOperand FullCodeGenerator::EmitSlotSearch(Slot* slot, Register scratch) { |
| 536 switch (slot->type()) { | 536 switch (slot->type()) { |
| 537 case Slot::PARAMETER: | 537 case Slot::PARAMETER: |
| 538 case Slot::LOCAL: | 538 case Slot::LOCAL: |
| 539 return MemOperand(fp, SlotOffset(slot)); | 539 return MemOperand(fp, SlotOffset(slot)); |
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| 3451 __ CallStub(&stub); | 3451 __ CallStub(&stub); |
| 3452 PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false); | 3452 PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false); |
| 3453 // The stub returns 0 for true. | 3453 // The stub returns 0 for true. |
| 3454 __ tst(r0, r0); | 3454 __ tst(r0, r0); |
| 3455 Split(eq, if_true, if_false, fall_through); | 3455 Split(eq, if_true, if_false, fall_through); |
| 3456 break; | 3456 break; |
| 3457 } | 3457 } |
| 3458 | 3458 |
| 3459 default: { | 3459 default: { |
| 3460 VisitForAccumulatorValue(expr->right()); | 3460 VisitForAccumulatorValue(expr->right()); |
| 3461 Condition cc = eq; | 3461 Condition cond = eq; |
| 3462 bool strict = false; | 3462 bool strict = false; |
| 3463 switch (op) { | 3463 switch (op) { |
| 3464 case Token::EQ_STRICT: | 3464 case Token::EQ_STRICT: |
| 3465 strict = true; | 3465 strict = true; |
| 3466 // Fall through | 3466 // Fall through |
| 3467 case Token::EQ: | 3467 case Token::EQ: |
| 3468 cc = eq; | 3468 cond = eq; |
| 3469 __ pop(r1); | 3469 __ pop(r1); |
| 3470 break; | 3470 break; |
| 3471 case Token::LT: | 3471 case Token::LT: |
| 3472 cc = lt; | 3472 cond = lt; |
| 3473 __ pop(r1); | 3473 __ pop(r1); |
| 3474 break; | 3474 break; |
| 3475 case Token::GT: | 3475 case Token::GT: |
| 3476 // Reverse left and right sides to obtain ECMA-262 conversion order. | 3476 // Reverse left and right sides to obtain ECMA-262 conversion order. |
| 3477 cc = lt; | 3477 cond = lt; |
| 3478 __ mov(r1, result_register()); | 3478 __ mov(r1, result_register()); |
| 3479 __ pop(r0); | 3479 __ pop(r0); |
| 3480 break; | 3480 break; |
| 3481 case Token::LTE: | 3481 case Token::LTE: |
| 3482 // Reverse left and right sides to obtain ECMA-262 conversion order. | 3482 // Reverse left and right sides to obtain ECMA-262 conversion order. |
| 3483 cc = ge; | 3483 cond = ge; |
| 3484 __ mov(r1, result_register()); | 3484 __ mov(r1, result_register()); |
| 3485 __ pop(r0); | 3485 __ pop(r0); |
| 3486 break; | 3486 break; |
| 3487 case Token::GTE: | 3487 case Token::GTE: |
| 3488 cc = ge; | 3488 cond = ge; |
| 3489 __ pop(r1); | 3489 __ pop(r1); |
| 3490 break; | 3490 break; |
| 3491 case Token::IN: | 3491 case Token::IN: |
| 3492 case Token::INSTANCEOF: | 3492 case Token::INSTANCEOF: |
| 3493 default: | 3493 default: |
| 3494 UNREACHABLE(); | 3494 UNREACHABLE(); |
| 3495 } | 3495 } |
| 3496 | 3496 |
| 3497 bool inline_smi_code = ShouldInlineSmiCase(op); | 3497 bool inline_smi_code = ShouldInlineSmiCase(op); |
| 3498 if (inline_smi_code) { | 3498 if (inline_smi_code) { |
| 3499 Label slow_case; | 3499 Label slow_case; |
| 3500 __ orr(r2, r0, Operand(r1)); | 3500 __ orr(r2, r0, Operand(r1)); |
| 3501 __ BranchOnNotSmi(r2, &slow_case); | 3501 __ BranchOnNotSmi(r2, &slow_case); |
| 3502 __ cmp(r1, r0); | 3502 __ cmp(r1, r0); |
| 3503 Split(cc, if_true, if_false, NULL); | 3503 Split(cond, if_true, if_false, NULL); |
| 3504 __ bind(&slow_case); | 3504 __ bind(&slow_case); |
| 3505 } | 3505 } |
| 3506 CompareFlags flags = inline_smi_code | 3506 CompareFlags flags = inline_smi_code |
| 3507 ? NO_SMI_COMPARE_IN_STUB | 3507 ? NO_SMI_COMPARE_IN_STUB |
| 3508 : NO_COMPARE_FLAGS; | 3508 : NO_COMPARE_FLAGS; |
| 3509 CompareStub stub(cc, strict, flags, r1, r0); | 3509 CompareStub stub(cond, strict, flags, r1, r0); |
| 3510 __ CallStub(&stub); | 3510 __ CallStub(&stub); |
| 3511 PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false); | 3511 PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false); |
| 3512 __ cmp(r0, Operand(0, RelocInfo::NONE)); | 3512 __ cmp(r0, Operand(0, RelocInfo::NONE)); |
| 3513 Split(cc, if_true, if_false, fall_through); | 3513 Split(cond, if_true, if_false, fall_through); |
| 3514 } | 3514 } |
| 3515 } | 3515 } |
| 3516 | 3516 |
| 3517 // Convert the result of the comparison into one expected for this | 3517 // Convert the result of the comparison into one expected for this |
| 3518 // expression's context. | 3518 // expression's context. |
| 3519 context()->Plug(if_true, if_false); | 3519 context()->Plug(if_true, if_false); |
| 3520 } | 3520 } |
| 3521 | 3521 |
| 3522 | 3522 |
| 3523 void FullCodeGenerator::VisitCompareToNull(CompareToNull* expr) { | 3523 void FullCodeGenerator::VisitCompareToNull(CompareToNull* expr) { |
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| 3613 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. | 3613 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. |
| 3614 __ add(pc, r1, Operand(masm_->CodeObject())); | 3614 __ add(pc, r1, Operand(masm_->CodeObject())); |
| 3615 } | 3615 } |
| 3616 | 3616 |
| 3617 | 3617 |
| 3618 #undef __ | 3618 #undef __ |
| 3619 | 3619 |
| 3620 } } // namespace v8::internal | 3620 } } // namespace v8::internal |
| 3621 | 3621 |
| 3622 #endif // V8_TARGET_ARCH_ARM | 3622 #endif // V8_TARGET_ARCH_ARM |
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