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Increase number of available major keys.

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This also adds a static assert checking that we do not
exceed the available number of major keys. The safepoint
table offset is now max 2^24 instead of 2^25.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/110183003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
bmeurer@chromium.org 2013-12-10 09:44:44 +00:00
parent 28c557dd5b
commit f0cfb1cad9
2 changed files with 3 additions and 2 deletions
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1
src/code-stubs.h
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@ -245,6 +245,7 @@ class CodeStub BASE_EMBEDDED {
MajorKeyBits::encode(MajorKey());
}
STATIC_ASSERT(NUMBER_OF_IDS < (1 << kStubMajorKeyBits));
class MajorKeyBits: public BitField<uint32_t, 0, kStubMajorKeyBits> {};
class MinorKeyBits: public BitField<uint32_t,
kStubMajorKeyBits, kStubMinorKeyBits> {}; // NOLINT

4
src/objects.h
View File

@ -311,7 +311,7 @@ static const ExtraICState kNoExtraICState = 0;
// Instance size sentinel for objects of variable size.
const int kVariableSizeSentinel = 0;
const int kStubMajorKeyBits = 6;
const int kStubMajorKeyBits = 7;
const int kStubMinorKeyBits = kBitsPerInt - kSmiTagSize - kStubMajorKeyBits;
// All Maps have a field instance_type containing a InstanceType.
@ -5484,7 +5484,7 @@ class Code: public HeapObject {
static const int kStubMajorKeyFirstBit = kIsCrankshaftedBit + 1;
static const int kSafepointTableOffsetFirstBit =
kStubMajorKeyFirstBit + kStubMajorKeyBits;
static const int kSafepointTableOffsetBitCount = 25;
static const int kSafepointTableOffsetBitCount = 24;
STATIC_ASSERT(kStubMajorKeyFirstBit + kStubMajorKeyBits <= 32);
STATIC_ASSERT(kSafepointTableOffsetFirstBit +