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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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9277 | 9277 |
9278 // Index is not a smi. | 9278 // Index is not a smi. |
9279 __ bind(&index_not_smi_); | 9279 __ bind(&index_not_smi_); |
9280 // If index is a heap number, try converting it to an integer. | 9280 // If index is a heap number, try converting it to an integer. |
9281 __ CheckMap(index_, scratch_, | 9281 __ CheckMap(index_, scratch_, |
9282 Factory::heap_number_map(), index_not_number_, true); | 9282 Factory::heap_number_map(), index_not_number_, true); |
9283 call_helper.BeforeCall(masm); | 9283 call_helper.BeforeCall(masm); |
9284 __ Push(object_, index_, result_); | 9284 __ Push(object_, index_, result_); |
9285 __ push(index_); // Consumed by runtime conversion function. | 9285 __ push(index_); // Consumed by runtime conversion function. |
9286 if (index_flags_ == STRING_INDEX_IS_NUMBER) { | 9286 if (index_flags_ == STRING_INDEX_IS_NUMBER) { |
9287 // Strictly speaking, NumberToInteger should be called here, but | 9287 __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero, 1); |
9288 // our string lengths don't exceed 32 bits and using ToUint32 maps | |
9289 // -0 to 0, which is what is required by the spec when accessing | |
9290 // strings. | |
9291 __ CallRuntime(Runtime::kNumberToJSUint32, 1); | |
9292 } else { | 9288 } else { |
9293 ASSERT(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); | 9289 ASSERT(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); |
9294 // NumberToSmi discards numbers that are not exact integers. | 9290 // NumberToSmi discards numbers that are not exact integers. |
9295 __ CallRuntime(Runtime::kNumberToSmi, 1); | 9291 __ CallRuntime(Runtime::kNumberToSmi, 1); |
9296 } | 9292 } |
9297 if (!scratch_.is(r0)) { | 9293 if (!scratch_.is(r0)) { |
9298 // Save the conversion result before the pop instructions below | 9294 // Save the conversion result before the pop instructions below |
9299 // have a chance to overwrite it. | 9295 // have a chance to overwrite it. |
9300 __ mov(scratch_, r0); | 9296 __ mov(scratch_, r0); |
9301 } | 9297 } |
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10268 __ bind(&string_add_runtime); | 10264 __ bind(&string_add_runtime); |
10269 __ TailCallRuntime(Runtime::kStringAdd, 2, 1); | 10265 __ TailCallRuntime(Runtime::kStringAdd, 2, 1); |
10270 } | 10266 } |
10271 | 10267 |
10272 | 10268 |
10273 #undef __ | 10269 #undef __ |
10274 | 10270 |
10275 } } // namespace v8::internal | 10271 } } // namespace v8::internal |
10276 | 10272 |
10277 #endif // V8_TARGET_ARCH_ARM | 10273 #endif // V8_TARGET_ARCH_ARM |
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