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Lowered kMaxVirtualRegisters (fixes v8 2139 and chrome 123822 and 128252).

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BUG=128252

Review URL: https://chromiumcodereview.appspot.com/10966031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12613 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
mmassi@chromium.org 2012-09-26 09:35:41 +00:00
parent c9adda2647
commit e7fc0207ab
1 changed files with 5 additions and 3 deletions
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8
src/lithium.h
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@ -133,13 +133,15 @@ class LUnallocated: public LOperand {
// index in the upper bits.
static const int kPolicyWidth = 3;
static const int kLifetimeWidth = 1;
static const int kVirtualRegisterWidth = 18;
static const int kVirtualRegisterWidth = 15;
static const int kPolicyShift = kKindFieldWidth;
static const int kLifetimeShift = kPolicyShift + kPolicyWidth;
static const int kVirtualRegisterShift = kLifetimeShift + kLifetimeWidth;
static const int kFixedIndexShift =
kVirtualRegisterShift + kVirtualRegisterWidth;
static const int kFixedIndexWidth = 32 - kFixedIndexShift;
STATIC_ASSERT(kFixedIndexWidth > 5);
class PolicyField : public BitField<Policy, kPolicyShift, kPolicyWidth> { };
@ -154,8 +156,8 @@ class LUnallocated: public LOperand {
};
static const int kMaxVirtualRegisters = 1 << kVirtualRegisterWidth;
static const int kMaxFixedIndex = 63;
static const int kMinFixedIndex = -64;
static const int kMaxFixedIndex = (1 << kFixedIndexWidth) - 1;
static const int kMinFixedIndex = -(1 << kFixedIndexWidth);
bool HasAnyPolicy() const {
return policy() == ANY;