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Issue 1391373004: Bailout for large object allocations in full code EmitFastOneByteArrayJoin. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 2 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 #if V8_TARGET_ARCH_MIPS 5 #if V8_TARGET_ARCH_MIPS
6 6
7 // Note on Mips implementation: 7 // Note on Mips implementation:
8 // 8 //
9 // The result_register() for mips is the 'v0' register, which is defined 9 // The result_register() for mips is the 'v0' register, which is defined
10 // by the ABI to contain function return values. However, the first 10 // by the ABI to contain function return values. However, the first
(...skipping 4258 matching lines...) Expand 10 before | Expand all | Expand 10 after
4269 __ Mul(scratch3, scratch2, array_length, scratch1); 4269 __ Mul(scratch3, scratch2, array_length, scratch1);
4270 // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are 4270 // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are
4271 // zero. 4271 // zero.
4272 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); 4272 __ Branch(&bailout, ne, scratch3, Operand(zero_reg));
4273 __ And(scratch3, scratch2, Operand(0x80000000)); 4273 __ And(scratch3, scratch2, Operand(0x80000000));
4274 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); 4274 __ Branch(&bailout, ne, scratch3, Operand(zero_reg));
4275 __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3); 4275 __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3);
4276 __ BranchOnOverflow(&bailout, scratch3); 4276 __ BranchOnOverflow(&bailout, scratch3);
4277 __ SmiUntag(string_length); 4277 __ SmiUntag(string_length);
4278 4278
4279 // Bailout for large object allocations.
4280 __ Branch(&bailout, gt, string_length,
4281 Operand(Page::kMaxRegularHeapObjectSize));
4282
4279 // Get first element in the array to free up the elements register to be used 4283 // Get first element in the array to free up the elements register to be used
4280 // for the result. 4284 // for the result.
4281 __ Addu(element, 4285 __ Addu(element,
4282 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); 4286 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
4283 result = elements; // End of live range for elements. 4287 result = elements; // End of live range for elements.
4284 elements = no_reg; 4288 elements = no_reg;
4285 // Live values in registers: 4289 // Live values in registers:
4286 // element: First array element 4290 // element: First array element
4287 // separator: Separator string 4291 // separator: Separator string
4288 // string_length: Length of result string (not smi) 4292 // string_length: Length of result string (not smi)
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5256 reinterpret_cast<uint32_t>( 5260 reinterpret_cast<uint32_t>(
5257 isolate->builtins()->OsrAfterStackCheck()->entry())); 5261 isolate->builtins()->OsrAfterStackCheck()->entry()));
5258 return OSR_AFTER_STACK_CHECK; 5262 return OSR_AFTER_STACK_CHECK;
5259 } 5263 }
5260 5264
5261 5265
5262 } // namespace internal 5266 } // namespace internal
5263 } // namespace v8 5267 } // namespace v8
5264 5268
5265 #endif // V8_TARGET_ARCH_MIPS 5269 #endif // V8_TARGET_ARCH_MIPS
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