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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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3378 __ and_(r1, r0, Operand(kSmiTagMask)); | 3378 __ and_(r1, r0, Operand(kSmiTagMask)); |
3379 __ eor(r1, r1, Operand(kSmiTagMask), SetCC); | 3379 __ eor(r1, r1, Operand(kSmiTagMask), SetCC); |
3380 answer.Branch(ne); | 3380 answer.Branch(ne); |
3381 // It is a heap object - get the map. Check if the object is a JS array. | 3381 // It is a heap object - get the map. Check if the object is a JS array. |
3382 __ CompareObjectType(r0, r1, r1, JS_ARRAY_TYPE); | 3382 __ CompareObjectType(r0, r1, r1, JS_ARRAY_TYPE); |
3383 answer.Bind(); | 3383 answer.Bind(); |
3384 cc_reg_ = eq; | 3384 cc_reg_ = eq; |
3385 } | 3385 } |
3386 | 3386 |
3387 | 3387 |
| 3388 void CodeGenerator::GenerateIsObject(ZoneList<Expression*>* args) { |
| 3389 // This generates a fast version of: |
| 3390 // (typeof(arg) === 'object' || %_ClassOf(arg) == 'RegExp') |
| 3391 VirtualFrame::SpilledScope spilled_scope; |
| 3392 ASSERT(args->length() == 1); |
| 3393 LoadAndSpill(args->at(0)); |
| 3394 frame_->EmitPop(r1); |
| 3395 __ tst(r1, Operand(kSmiTagMask)); |
| 3396 false_target()->Branch(eq); |
| 3397 |
| 3398 __ LoadRoot(ip, Heap::kNullValueRootIndex); |
| 3399 __ cmp(r1, ip); |
| 3400 true_target()->Branch(eq); |
| 3401 |
| 3402 Register map_reg = r2; |
| 3403 __ ldr(map_reg, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 3404 // Undetectable objects behave like undefined when tested with typeof. |
| 3405 __ ldrb(r1, FieldMemOperand(map_reg, Map::kBitFieldOffset)); |
| 3406 __ and_(r1, r1, Operand(1 << Map::kIsUndetectable)); |
| 3407 __ cmp(r1, Operand(1 << Map::kIsUndetectable)); |
| 3408 false_target()->Branch(eq); |
| 3409 |
| 3410 __ ldrb(r1, FieldMemOperand(map_reg, Map::kInstanceTypeOffset)); |
| 3411 __ cmp(r1, Operand(FIRST_JS_OBJECT_TYPE)); |
| 3412 false_target()->Branch(lt); |
| 3413 __ cmp(r1, Operand(LAST_JS_OBJECT_TYPE)); |
| 3414 cc_reg_ = le; |
| 3415 } |
| 3416 |
| 3417 |
| 3418 void CodeGenerator::GenerateIsFunction(ZoneList<Expression*>* args) { |
| 3419 // This generates a fast version of: |
| 3420 // (%_ClassOf(arg) === 'Function') |
| 3421 VirtualFrame::SpilledScope spilled_scope; |
| 3422 ASSERT(args->length() == 1); |
| 3423 LoadAndSpill(args->at(0)); |
| 3424 frame_->EmitPop(r0); |
| 3425 __ tst(r0, Operand(kSmiTagMask)); |
| 3426 false_target()->Branch(eq); |
| 3427 Register map_reg = r2; |
| 3428 __ CompareObjectType(r0, map_reg, r1, JS_FUNCTION_TYPE); |
| 3429 cc_reg_ = eq; |
| 3430 } |
| 3431 |
| 3432 |
3388 void CodeGenerator::GenerateIsConstructCall(ZoneList<Expression*>* args) { | 3433 void CodeGenerator::GenerateIsConstructCall(ZoneList<Expression*>* args) { |
3389 VirtualFrame::SpilledScope spilled_scope; | 3434 VirtualFrame::SpilledScope spilled_scope; |
3390 ASSERT(args->length() == 0); | 3435 ASSERT(args->length() == 0); |
3391 | 3436 |
3392 // Get the frame pointer for the calling frame. | 3437 // Get the frame pointer for the calling frame. |
3393 __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | 3438 __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
3394 | 3439 |
3395 // Skip the arguments adaptor frame if it exists. | 3440 // Skip the arguments adaptor frame if it exists. |
3396 Label check_frame_marker; | 3441 Label check_frame_marker; |
3397 __ ldr(r1, MemOperand(r2, StandardFrameConstants::kContextOffset)); | 3442 __ ldr(r1, MemOperand(r2, StandardFrameConstants::kContextOffset)); |
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6428 int CompareStub::MinorKey() { | 6473 int CompareStub::MinorKey() { |
6429 // Encode the two parameters in a unique 16 bit value. | 6474 // Encode the two parameters in a unique 16 bit value. |
6430 ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15)); | 6475 ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15)); |
6431 return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0); | 6476 return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0); |
6432 } | 6477 } |
6433 | 6478 |
6434 | 6479 |
6435 #undef __ | 6480 #undef __ |
6436 | 6481 |
6437 } } // namespace v8::internal | 6482 } } // namespace v8::internal |
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