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Issue 2718007: [Isolates] Moving TranscendentalCache to Isolate. (Closed)
Patch Set: Created 10 years, 6 months ago
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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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8173 __ xorl(rdx, rbx); 8173 __ xorl(rdx, rbx);
8174 __ movl(rcx, rdx); 8174 __ movl(rcx, rdx);
8175 __ movl(rax, rdx); 8175 __ movl(rax, rdx);
8176 __ movl(rdi, rdx); 8176 __ movl(rdi, rdx);
8177 __ sarl(rdx, Immediate(8)); 8177 __ sarl(rdx, Immediate(8));
8178 __ sarl(rcx, Immediate(16)); 8178 __ sarl(rcx, Immediate(16));
8179 __ sarl(rax, Immediate(24)); 8179 __ sarl(rax, Immediate(24));
8180 __ xorl(rcx, rdx); 8180 __ xorl(rcx, rdx);
8181 __ xorl(rax, rdi); 8181 __ xorl(rax, rdi);
8182 __ xorl(rcx, rax); 8182 __ xorl(rcx, rax);
8183 ASSERT(IsPowerOf2(TranscendentalCache::kCacheSize)); 8183 ASSERT(IsPowerOf2(TranscendentalCache::SubCache::kCacheSize));
8184 __ andl(rcx, Immediate(TranscendentalCache::kCacheSize - 1)); 8184 __ andl(rcx, Immediate(TranscendentalCache::SubCache::kCacheSize - 1));
8185 // ST[0] == double value. 8185 // ST[0] == double value.
8186 // rbx = bits of double value. 8186 // rbx = bits of double value.
8187 // rcx = TranscendentalCache::hash(double value). 8187 // rcx = TranscendentalCache::hash(double value).
8188 __ movq(rax, ExternalReference::transcendental_cache_array_address()); 8188 __ movq(rax, ExternalReference::transcendental_cache_array_address());
8189 // rax points to cache array. 8189 // rax points to cache array.
8190 __ movq(rax, Operand(rax, type_ * sizeof(TranscendentalCache::caches_[0]))); 8190 __ movq(rax, Operand(rax,type_ * sizeof(Isolate::Current()->
8191 transcendental_cache()->caches_[0])));
8191 // rax points to the cache for the type type_. 8192 // rax points to the cache for the type type_.
8192 // If NULL, the cache hasn't been initialized yet, so go through runtime. 8193 // If NULL, the cache hasn't been initialized yet, so go through runtime.
8193 __ testq(rax, rax); 8194 __ testq(rax, rax);
8194 __ j(zero, &runtime_call_clear_stack); 8195 __ j(zero, &runtime_call_clear_stack);
8195 #ifdef DEBUG 8196 #ifdef DEBUG
8196 // Check that the layout of cache elements match expectations. 8197 // Check that the layout of cache elements match expectations.
8197 { // NOLINT - doesn't like a single brace on a line. 8198 { // NOLINT - doesn't like a single brace on a line.
8198 TranscendentalCache::Element test_elem[2]; 8199 TranscendentalCache::SubCache::Element test_elem[2];
8199 char* elem_start = reinterpret_cast<char*>(&test_elem[0]); 8200 char* elem_start = reinterpret_cast<char*>(&test_elem[0]);
8200 char* elem2_start = reinterpret_cast<char*>(&test_elem[1]); 8201 char* elem2_start = reinterpret_cast<char*>(&test_elem[1]);
8201 char* elem_in0 = reinterpret_cast<char*>(&(test_elem[0].in[0])); 8202 char* elem_in0 = reinterpret_cast<char*>(&(test_elem[0].in[0]));
8202 char* elem_in1 = reinterpret_cast<char*>(&(test_elem[0].in[1])); 8203 char* elem_in1 = reinterpret_cast<char*>(&(test_elem[0].in[1]));
8203 char* elem_out = reinterpret_cast<char*>(&(test_elem[0].output)); 8204 char* elem_out = reinterpret_cast<char*>(&(test_elem[0].output));
8204 // Two uint_32's and a pointer per element. 8205 // Two uint_32's and a pointer per element.
8205 CHECK_EQ(16, static_cast<int>(elem2_start - elem_start)); 8206 CHECK_EQ(16, static_cast<int>(elem2_start - elem_start));
8206 CHECK_EQ(0, static_cast<int>(elem_in0 - elem_start)); 8207 CHECK_EQ(0, static_cast<int>(elem_in0 - elem_start));
8207 CHECK_EQ(kIntSize, static_cast<int>(elem_in1 - elem_start)); 8208 CHECK_EQ(kIntSize, static_cast<int>(elem_in1 - elem_start));
8208 CHECK_EQ(2 * kIntSize, static_cast<int>(elem_out - elem_start)); 8209 CHECK_EQ(2 * kIntSize, static_cast<int>(elem_out - elem_start));
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11930 } 11931 }
11931 11932
11932 #endif 11933 #endif
11933 11934
11934 11935
11935 #undef __ 11936 #undef __
11936 11937
11937 } } // namespace v8::internal 11938 } } // namespace v8::internal
11938 11939
11939 #endif // V8_TARGET_ARCH_X64 11940 #endif // V8_TARGET_ARCH_X64
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