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Issue 1486563002: Remove {FIRST,LAST}_SPEC_OBJECT_TYPE. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years ago
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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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #if V8_TARGET_ARCH_MIPS64 5 #if V8_TARGET_ARCH_MIPS64
6 6
7 #include "src/bootstrapper.h" 7 #include "src/bootstrapper.h"
8 #include "src/code-stubs.h" 8 #include "src/code-stubs.h"
9 #include "src/codegen.h" 9 #include "src/codegen.h"
10 #include "src/ic/handler-compiler.h" 10 #include "src/ic/handler-compiler.h"
(...skipping 271 matching lines...) Expand 10 before | Expand all | Expand 10 after
282 282
283 __ li(exp_mask_reg, Operand(HeapNumber::kExponentMask)); 283 __ li(exp_mask_reg, Operand(HeapNumber::kExponentMask));
284 284
285 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), 285 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(),
286 // so we do the second best thing - test it ourselves. 286 // so we do the second best thing - test it ourselves.
287 // They are both equal and they are not both Smis so both of them are not 287 // They are both equal and they are not both Smis so both of them are not
288 // Smis. If it's not a heap number, then return equal. 288 // Smis. If it's not a heap number, then return equal.
289 __ GetObjectType(a0, t0, t0); 289 __ GetObjectType(a0, t0, t0);
290 if (cc == less || cc == greater) { 290 if (cc == less || cc == greater) {
291 // Call runtime on identical JSObjects. 291 // Call runtime on identical JSObjects.
292 __ Branch(slow, greater, t0, Operand(FIRST_SPEC_OBJECT_TYPE)); 292 __ Branch(slow, greater, t0, Operand(FIRST_JS_RECEIVER_TYPE));
293 // Call runtime on identical symbols since we need to throw a TypeError. 293 // Call runtime on identical symbols since we need to throw a TypeError.
294 __ Branch(slow, eq, t0, Operand(SYMBOL_TYPE)); 294 __ Branch(slow, eq, t0, Operand(SYMBOL_TYPE));
295 // Call runtime on identical SIMD values since we must throw a TypeError. 295 // Call runtime on identical SIMD values since we must throw a TypeError.
296 __ Branch(slow, eq, t0, Operand(SIMD128_VALUE_TYPE)); 296 __ Branch(slow, eq, t0, Operand(SIMD128_VALUE_TYPE));
297 if (is_strong(strength)) { 297 if (is_strong(strength)) {
298 // Call the runtime on anything that is converted in the semantics, since 298 // Call the runtime on anything that is converted in the semantics, since
299 // we need to throw a TypeError. Smis have already been ruled out. 299 // we need to throw a TypeError. Smis have already been ruled out.
300 __ Branch(&return_equal, eq, t0, Operand(HEAP_NUMBER_TYPE)); 300 __ Branch(&return_equal, eq, t0, Operand(HEAP_NUMBER_TYPE));
301 __ And(t0, t0, Operand(kIsNotStringMask)); 301 __ And(t0, t0, Operand(kIsNotStringMask));
302 __ Branch(slow, ne, t0, Operand(zero_reg)); 302 __ Branch(slow, ne, t0, Operand(zero_reg));
303 } 303 }
304 } else { 304 } else {
305 __ Branch(&heap_number, eq, t0, Operand(HEAP_NUMBER_TYPE)); 305 __ Branch(&heap_number, eq, t0, Operand(HEAP_NUMBER_TYPE));
306 // Comparing JS objects with <=, >= is complicated. 306 // Comparing JS objects with <=, >= is complicated.
307 if (cc != eq) { 307 if (cc != eq) {
308 __ Branch(slow, greater, t0, Operand(FIRST_SPEC_OBJECT_TYPE)); 308 __ Branch(slow, greater, t0, Operand(FIRST_JS_RECEIVER_TYPE));
309 // Call runtime on identical symbols since we need to throw a TypeError. 309 // Call runtime on identical symbols since we need to throw a TypeError.
310 __ Branch(slow, eq, t0, Operand(SYMBOL_TYPE)); 310 __ Branch(slow, eq, t0, Operand(SYMBOL_TYPE));
311 // Call runtime on identical SIMD values since we must throw a TypeError. 311 // Call runtime on identical SIMD values since we must throw a TypeError.
312 __ Branch(slow, eq, t0, Operand(SIMD128_VALUE_TYPE)); 312 __ Branch(slow, eq, t0, Operand(SIMD128_VALUE_TYPE));
313 if (is_strong(strength)) { 313 if (is_strong(strength)) {
314 // Call the runtime on anything that is converted in the semantics, 314 // Call the runtime on anything that is converted in the semantics,
315 // since we need to throw a TypeError. Smis and heap numbers have 315 // since we need to throw a TypeError. Smis and heap numbers have
316 // already been ruled out. 316 // already been ruled out.
317 __ And(t0, t0, Operand(kIsNotStringMask)); 317 __ And(t0, t0, Operand(kIsNotStringMask));
318 __ Branch(slow, ne, t0, Operand(zero_reg)); 318 __ Branch(slow, ne, t0, Operand(zero_reg));
(...skipping 129 matching lines...) Expand 10 before | Expand all | Expand 10 after
448 // Fall through to both_loaded_as_doubles. 448 // Fall through to both_loaded_as_doubles.
449 } 449 }
450 450
451 451
452 static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm, 452 static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm,
453 Register lhs, 453 Register lhs,
454 Register rhs) { 454 Register rhs) {
455 // If either operand is a JS object or an oddball value, then they are 455 // If either operand is a JS object or an oddball value, then they are
456 // not equal since their pointers are different. 456 // not equal since their pointers are different.
457 // There is no test for undetectability in strict equality. 457 // There is no test for undetectability in strict equality.
458 STATIC_ASSERT(LAST_TYPE == LAST_SPEC_OBJECT_TYPE); 458 STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE);
459 Label first_non_object; 459 Label first_non_object;
460 // Get the type of the first operand into a2 and compare it with 460 // Get the type of the first operand into a2 and compare it with
461 // FIRST_SPEC_OBJECT_TYPE. 461 // FIRST_JS_RECEIVER_TYPE.
462 __ GetObjectType(lhs, a2, a2); 462 __ GetObjectType(lhs, a2, a2);
463 __ Branch(&first_non_object, less, a2, Operand(FIRST_SPEC_OBJECT_TYPE)); 463 __ Branch(&first_non_object, less, a2, Operand(FIRST_JS_RECEIVER_TYPE));
464 464
465 // Return non-zero. 465 // Return non-zero.
466 Label return_not_equal; 466 Label return_not_equal;
467 __ bind(&return_not_equal); 467 __ bind(&return_not_equal);
468 __ Ret(USE_DELAY_SLOT); 468 __ Ret(USE_DELAY_SLOT);
469 __ li(v0, Operand(1)); 469 __ li(v0, Operand(1));
470 470
471 __ bind(&first_non_object); 471 __ bind(&first_non_object);
472 // Check for oddballs: true, false, null, undefined. 472 // Check for oddballs: true, false, null, undefined.
473 __ Branch(&return_not_equal, eq, a2, Operand(ODDBALL_TYPE)); 473 __ Branch(&return_not_equal, eq, a2, Operand(ODDBALL_TYPE));
474 474
475 __ GetObjectType(rhs, a3, a3); 475 __ GetObjectType(rhs, a3, a3);
476 __ Branch(&return_not_equal, greater, a3, Operand(FIRST_SPEC_OBJECT_TYPE)); 476 __ Branch(&return_not_equal, greater, a3, Operand(FIRST_JS_RECEIVER_TYPE));
477 477
478 // Check for oddballs: true, false, null, undefined. 478 // Check for oddballs: true, false, null, undefined.
479 __ Branch(&return_not_equal, eq, a3, Operand(ODDBALL_TYPE)); 479 __ Branch(&return_not_equal, eq, a3, Operand(ODDBALL_TYPE));
480 480
481 // Now that we have the types we might as well check for 481 // Now that we have the types we might as well check for
482 // internalized-internalized. 482 // internalized-internalized.
483 STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); 483 STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0);
484 __ Or(a2, a2, Operand(a3)); 484 __ Or(a2, a2, Operand(a3));
485 __ And(at, a2, Operand(kIsNotStringMask | kIsNotInternalizedMask)); 485 __ And(at, a2, Operand(kIsNotStringMask | kIsNotInternalizedMask));
486 __ Branch(&return_not_equal, eq, at, Operand(zero_reg)); 486 __ Branch(&return_not_equal, eq, at, Operand(zero_reg));
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after
528 __ Branch(not_both_strings, ge, a3, Operand(FIRST_NONSTRING_TYPE)); 528 __ Branch(not_both_strings, ge, a3, Operand(FIRST_NONSTRING_TYPE));
529 __ And(at, a3, Operand(kIsNotInternalizedMask)); 529 __ And(at, a3, Operand(kIsNotInternalizedMask));
530 __ Branch(possible_strings, ne, at, Operand(zero_reg)); 530 __ Branch(possible_strings, ne, at, Operand(zero_reg));
531 531
532 // Both are internalized strings. We already checked they weren't the same 532 // Both are internalized strings. We already checked they weren't the same
533 // pointer so they are not equal. 533 // pointer so they are not equal.
534 __ Ret(USE_DELAY_SLOT); 534 __ Ret(USE_DELAY_SLOT);
535 __ li(v0, Operand(1)); // Non-zero indicates not equal. 535 __ li(v0, Operand(1)); // Non-zero indicates not equal.
536 536
537 __ bind(&object_test); 537 __ bind(&object_test);
538 __ Branch(not_both_strings, lt, a2, Operand(FIRST_SPEC_OBJECT_TYPE)); 538 __ Branch(not_both_strings, lt, a2, Operand(FIRST_JS_RECEIVER_TYPE));
539 __ GetObjectType(rhs, a2, a3); 539 __ GetObjectType(rhs, a2, a3);
540 __ Branch(not_both_strings, lt, a3, Operand(FIRST_SPEC_OBJECT_TYPE)); 540 __ Branch(not_both_strings, lt, a3, Operand(FIRST_JS_RECEIVER_TYPE));
541 541
542 // If both objects are undetectable, they are equal. Otherwise, they 542 // If both objects are undetectable, they are equal. Otherwise, they
543 // are not equal, since they are different objects and an object is not 543 // are not equal, since they are different objects and an object is not
544 // equal to undefined. 544 // equal to undefined.
545 __ ld(a3, FieldMemOperand(lhs, HeapObject::kMapOffset)); 545 __ ld(a3, FieldMemOperand(lhs, HeapObject::kMapOffset));
546 __ lbu(a2, FieldMemOperand(a2, Map::kBitFieldOffset)); 546 __ lbu(a2, FieldMemOperand(a2, Map::kBitFieldOffset));
547 __ lbu(a3, FieldMemOperand(a3, Map::kBitFieldOffset)); 547 __ lbu(a3, FieldMemOperand(a3, Map::kBitFieldOffset));
548 __ and_(a0, a2, a3); 548 __ and_(a0, a2, a3);
549 __ And(a0, a0, Operand(1 << Map::kIsUndetectable)); 549 __ And(a0, a0, Operand(1 << Map::kIsUndetectable));
550 __ Ret(USE_DELAY_SLOT); 550 __ Ret(USE_DELAY_SLOT);
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5596 MemOperand(fp, 6 * kPointerSize), NULL); 5596 MemOperand(fp, 6 * kPointerSize), NULL);
5597 } 5597 }
5598 5598
5599 5599
5600 #undef __ 5600 #undef __
5601 5601
5602 } // namespace internal 5602 } // namespace internal
5603 } // namespace v8 5603 } // namespace v8
5604 5604
5605 #endif // V8_TARGET_ARCH_MIPS64 5605 #endif // V8_TARGET_ARCH_MIPS64
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