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Issue 1162993006: Add support for Embedded Constant Pools for PPC and Arm (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 6 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 // 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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524 static void CheckCodeForUnsafeLiteral(Handle<JSFunction> f) { 524 static void CheckCodeForUnsafeLiteral(Handle<JSFunction> f) {
525 // Create a disassembler with default name lookup. 525 // Create a disassembler with default name lookup.
526 disasm::NameConverter name_converter; 526 disasm::NameConverter name_converter;
527 disasm::Disassembler d(name_converter); 527 disasm::Disassembler d(name_converter);
528 528
529 if (f->code()->kind() == Code::FUNCTION) { 529 if (f->code()->kind() == Code::FUNCTION) {
530 Address pc = f->code()->instruction_start(); 530 Address pc = f->code()->instruction_start();
531 int decode_size = 531 int decode_size =
532 Min(f->code()->instruction_size(), 532 Min(f->code()->instruction_size(),
533 static_cast<int>(f->code()->back_edge_table_offset())); 533 static_cast<int>(f->code()->back_edge_table_offset()));
534 if (FLAG_enable_embedded_constant_pool) {
535 decode_size = Min(decode_size, f->code()->constant_pool_offset());
536 }
534 Address end = pc + decode_size; 537 Address end = pc + decode_size;
535 538
536 v8::internal::EmbeddedVector<char, 128> decode_buffer; 539 v8::internal::EmbeddedVector<char, 128> decode_buffer;
537 v8::internal::EmbeddedVector<char, 128> smi_hex_buffer; 540 v8::internal::EmbeddedVector<char, 128> smi_hex_buffer;
538 Smi* smi = Smi::FromInt(12345678); 541 Smi* smi = Smi::FromInt(12345678);
539 SNPrintF(smi_hex_buffer, "0x%" V8PRIxPTR, reinterpret_cast<intptr_t>(smi)); 542 SNPrintF(smi_hex_buffer, "0x%" V8PRIxPTR, reinterpret_cast<intptr_t>(smi));
540 while (pc < end) { 543 while (pc < end) {
541 int num_const = d.ConstantPoolSizeAt(pc); 544 int num_const = d.ConstantPoolSizeAt(pc);
542 if (num_const >= 0) { 545 if (num_const >= 0) {
543 pc += (num_const + 1) * kPointerSize; 546 pc += (num_const + 1) * kPointerSize;
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557 CompileRun("function f() { a = 12345678 }; f();"); 560 CompileRun("function f() { a = 12345678 }; f();");
558 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); 561 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
559 CompileRun("function f(x) { a = 12345678 + x}; f(1);"); 562 CompileRun("function f(x) { a = 12345678 + x}; f(1);");
560 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); 563 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
561 CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);"); 564 CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);");
562 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); 565 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
563 CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);"); 566 CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);");
564 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f")); 567 CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
565 } 568 }
566 #endif 569 #endif
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