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Issue 1126783003: Handle the case when derived constructor is [[Call]]ed with 0 args. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 7 months 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 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_ARM 7 #if V8_TARGET_ARCH_ARM
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/bootstrapper.h" 10 #include "src/bootstrapper.h"
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1841 __ b(eq, &adaptor_frame); 1841 __ b(eq, &adaptor_frame);
1842 1842
1843 // Get the length from the frame. 1843 // Get the length from the frame.
1844 __ ldr(r1, MemOperand(sp, 0)); 1844 __ ldr(r1, MemOperand(sp, 0));
1845 __ b(&try_allocate); 1845 __ b(&try_allocate);
1846 1846
1847 // Patch the arguments.length and the parameters pointer. 1847 // Patch the arguments.length and the parameters pointer.
1848 __ bind(&adaptor_frame); 1848 __ bind(&adaptor_frame);
1849 __ ldr(r1, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset)); 1849 __ ldr(r1, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset));
1850 if (has_new_target()) { 1850 if (has_new_target()) {
1851 __ cmp(r1, Operand(Smi::FromInt(0)));
1852 Label skip_decrement;
1853 __ b(eq, &skip_decrement);
1851 // Subtract 1 from smi-tagged arguments count. 1854 // Subtract 1 from smi-tagged arguments count.
1852 __ sub(r1, r1, Operand(2)); 1855 __ sub(r1, r1, Operand(2));
1856 __ bind(&skip_decrement);
1853 } 1857 }
1854 __ str(r1, MemOperand(sp, 0)); 1858 __ str(r1, MemOperand(sp, 0));
1855 __ add(r3, r2, Operand::PointerOffsetFromSmiKey(r1)); 1859 __ add(r3, r2, Operand::PointerOffsetFromSmiKey(r1));
1856 __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset)); 1860 __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset));
1857 __ str(r3, MemOperand(sp, 1 * kPointerSize)); 1861 __ str(r3, MemOperand(sp, 1 * kPointerSize));
1858 1862
1859 // Try the new space allocation. Start out with computing the size 1863 // Try the new space allocation. Start out with computing the size
1860 // of the arguments object and the elements array in words. 1864 // of the arguments object and the elements array in words.
1861 Label add_arguments_object; 1865 Label add_arguments_object;
1862 __ bind(&try_allocate); 1866 __ bind(&try_allocate);
(...skipping 3423 matching lines...) Expand 10 before | Expand all | Expand 10 after
5286 kStackUnwindSpace, NULL, 5290 kStackUnwindSpace, NULL,
5287 MemOperand(fp, 6 * kPointerSize), NULL); 5291 MemOperand(fp, 6 * kPointerSize), NULL);
5288 } 5292 }
5289 5293
5290 5294
5291 #undef __ 5295 #undef __
5292 5296
5293 } } // namespace v8::internal 5297 } } // namespace v8::internal
5294 5298
5295 #endif // V8_TARGET_ARCH_ARM 5299 #endif // V8_TARGET_ARCH_ARM
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