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Diffstat (limited to 'src/3rdparty/v8/src/elements-kind.cc')
-rw-r--r-- | src/3rdparty/v8/src/elements-kind.cc | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/src/3rdparty/v8/src/elements-kind.cc b/src/3rdparty/v8/src/elements-kind.cc deleted file mode 100644 index 19fac44..0000000 --- a/src/3rdparty/v8/src/elements-kind.cc +++ /dev/null @@ -1,139 +0,0 @@ -// Copyright 2012 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "elements-kind.h" - -#include "api.h" -#include "elements.h" -#include "objects.h" - -namespace v8 { -namespace internal { - - -const char* ElementsKindToString(ElementsKind kind) { - ElementsAccessor* accessor = ElementsAccessor::ForKind(kind); - return accessor->name(); -} - - -void PrintElementsKind(FILE* out, ElementsKind kind) { - FPrintF(out, "%s", ElementsKindToString(kind)); -} - - -ElementsKind GetInitialFastElementsKind() { - if (FLAG_packed_arrays) { - return FAST_SMI_ELEMENTS; - } else { - return FAST_HOLEY_SMI_ELEMENTS; - } -} - - -struct InitializeFastElementsKindSequence { - static void Construct( - ElementsKind** fast_elements_kind_sequence_ptr) { - ElementsKind* fast_elements_kind_sequence = - new ElementsKind[kFastElementsKindCount]; - *fast_elements_kind_sequence_ptr = fast_elements_kind_sequence; - STATIC_ASSERT(FAST_SMI_ELEMENTS == FIRST_FAST_ELEMENTS_KIND); - fast_elements_kind_sequence[0] = FAST_SMI_ELEMENTS; - fast_elements_kind_sequence[1] = FAST_HOLEY_SMI_ELEMENTS; - fast_elements_kind_sequence[2] = FAST_DOUBLE_ELEMENTS; - fast_elements_kind_sequence[3] = FAST_HOLEY_DOUBLE_ELEMENTS; - fast_elements_kind_sequence[4] = FAST_ELEMENTS; - fast_elements_kind_sequence[5] = FAST_HOLEY_ELEMENTS; - } -}; - - -static LazyInstance<ElementsKind*, - InitializeFastElementsKindSequence>::type - fast_elements_kind_sequence = LAZY_INSTANCE_INITIALIZER; - - -ElementsKind GetFastElementsKindFromSequenceIndex(int sequence_number) { - ASSERT(sequence_number >= 0 && - sequence_number < kFastElementsKindCount); - return fast_elements_kind_sequence.Get()[sequence_number]; -} - -int GetSequenceIndexFromFastElementsKind(ElementsKind elements_kind) { - for (int i = 0; i < kFastElementsKindCount; ++i) { - if (fast_elements_kind_sequence.Get()[i] == elements_kind) { - return i; - } - } - UNREACHABLE(); - return 0; -} - - -ElementsKind GetNextMoreGeneralFastElementsKind(ElementsKind elements_kind, - bool allow_only_packed) { - ASSERT(IsFastElementsKind(elements_kind)); - ASSERT(elements_kind != TERMINAL_FAST_ELEMENTS_KIND); - while (true) { - int index = - GetSequenceIndexFromFastElementsKind(elements_kind) + 1; - elements_kind = GetFastElementsKindFromSequenceIndex(index); - if (!IsFastHoleyElementsKind(elements_kind) || !allow_only_packed) { - return elements_kind; - } - } - UNREACHABLE(); - return TERMINAL_FAST_ELEMENTS_KIND; -} - - -bool IsMoreGeneralElementsKindTransition(ElementsKind from_kind, - ElementsKind to_kind) { - switch (from_kind) { - case FAST_SMI_ELEMENTS: - return to_kind != FAST_SMI_ELEMENTS; - case FAST_HOLEY_SMI_ELEMENTS: - return to_kind != FAST_SMI_ELEMENTS && - to_kind != FAST_HOLEY_SMI_ELEMENTS; - case FAST_DOUBLE_ELEMENTS: - return to_kind != FAST_SMI_ELEMENTS && - to_kind != FAST_HOLEY_SMI_ELEMENTS && - to_kind != FAST_DOUBLE_ELEMENTS; - case FAST_HOLEY_DOUBLE_ELEMENTS: - return to_kind == FAST_ELEMENTS || - to_kind == FAST_HOLEY_ELEMENTS; - case FAST_ELEMENTS: - return to_kind == FAST_HOLEY_ELEMENTS; - case FAST_HOLEY_ELEMENTS: - return false; - default: - return false; - } -} - - -} } // namespace v8::internal |