d2c443b774
I'd like to propagate bailout reason to cpu profiler. So I need to save it into heap object SharedFunctionInfo. But: 1) all bailout reason strings spread across all the sources. 2) they are native strings and if I convert them into String then I may have a performance issue. 3) one byte is enough for 184 bailout reasons. Otherwise we need 8 bytes for the pointer. Also I think it would be nice to have error strings collected in one place. In that case we will get additional benefits: It allows us to keep this set of messages under control. It gives us a chance to internationalize them. It slightly reduces the binary footprint. From the other hand the developers have to add new strings into that enum. BUG= R=jkummerow@chromium.org Review URL: https://codereview.chromium.org/20843012 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16024 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
182 lines
7.6 KiB
C++
182 lines
7.6 KiB
C++
// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include <limits>
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#include "v8.h"
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#include "cctest.h"
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#include "code-stubs.h"
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#include "test-code-stubs.h"
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#include "factory.h"
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#include "macro-assembler.h"
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#include "platform.h"
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using namespace v8::internal;
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#define __ assm.
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ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
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Register source_reg,
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Register destination_reg) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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HandleScope handles(isolate);
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MacroAssembler assm(isolate, buffer, static_cast<int>(actual_size));
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assm.set_allow_stub_calls(false);
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int offset =
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source_reg.is(esp) ? 0 : (HeapNumber::kValueOffset - kSmiTagSize);
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DoubleToIStub stub(source_reg, destination_reg, offset, true);
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byte* start = stub.GetCode(isolate)->instruction_start();
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__ push(ebx);
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__ push(ecx);
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__ push(edx);
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__ push(esi);
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__ push(edi);
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if (!source_reg.is(esp)) {
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__ lea(source_reg, MemOperand(esp, 6 * kPointerSize - offset));
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}
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int param_offset = 7 * kPointerSize;
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// Save registers make sure they don't get clobbered.
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int reg_num = 0;
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for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
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Register reg = Register::from_code(reg_num);
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if (!reg.is(esp) && !reg.is(ebp) && !reg.is(destination_reg)) {
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__ push(reg);
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param_offset += kPointerSize;
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}
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}
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// Re-push the double argument
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__ push(MemOperand(esp, param_offset));
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__ push(MemOperand(esp, param_offset));
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// Call through to the actual stub
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__ call(start, RelocInfo::EXTERNAL_REFERENCE);
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__ add(esp, Immediate(kDoubleSize));
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// Make sure no registers have been unexpectedly clobbered
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for (--reg_num; reg_num >= 0; --reg_num) {
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Register reg = Register::from_code(reg_num);
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if (!reg.is(esp) && !reg.is(ebp) && !reg.is(destination_reg)) {
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__ cmp(reg, MemOperand(esp, 0));
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__ Assert(equal, kRegisterWasClobbered);
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__ add(esp, Immediate(kPointerSize));
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}
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}
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__ mov(eax, destination_reg);
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__ pop(edi);
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__ pop(esi);
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__ pop(edx);
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__ pop(ecx);
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__ pop(ebx);
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__ ret(kDoubleSize);
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CodeDesc desc;
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assm.GetCode(&desc);
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return reinterpret_cast<ConvertDToIFunc>(
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reinterpret_cast<intptr_t>(buffer));
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}
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#undef __
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static Isolate* GetIsolateFrom(LocalContext* context) {
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return reinterpret_cast<Isolate*>((*context)->GetIsolate());
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}
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TEST(ConvertDToI) {
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CcTest::InitializeVM();
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LocalContext context;
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Isolate* isolate = GetIsolateFrom(&context);
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HandleScope scope(isolate);
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#if DEBUG
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// Verify that the tests actually work with the C version. In the release
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// code, the compiler optimizes it away because it's all constant, but does it
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// wrong, triggering an assert on gcc.
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RunAllTruncationTests(&ConvertDToICVersion);
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#endif
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esp, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, eax, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ebx, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, ecx, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edx, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, esi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, eax));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, ebx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, ecx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, edx));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, edi));
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RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, esi));
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}
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