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Fit Representation and HType in one word to make HValue smaller.

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Review URL: http://codereview.chromium.org/6813091

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
vitalyr@chromium.org 2011-04-12 19:05:48 +00:00
parent df453b1203
commit 34d50b3d5c
1 changed files with 10 additions and 4 deletions
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14
src/hydrogen-instructions.h
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@ -274,7 +274,7 @@ class Representation {
return kind_ == other.kind_;
}
Kind kind() const { return kind_; }
Kind kind() const { return static_cast<Kind>(kind_); }
bool IsNone() const { return kind_ == kNone; }
bool IsTagged() const { return kind_ == kTagged; }
bool IsInteger32() const { return kind_ == kInteger32; }
@ -288,7 +288,10 @@ class Representation {
private:
explicit Representation(Kind k) : kind_(k) { }
Kind kind_;
// Make sure kind fits in int8.
STATIC_ASSERT(kNumRepresentations <= (1 << kBitsPerByte));
int8_t kind_;
};
@ -395,9 +398,12 @@ class HType {
kUninitialized = 0x1fff // 0001 1111 1111 1111
};
// Make sure type fits in int16.
STATIC_ASSERT(kUninitialized < (1 << (2 * kBitsPerByte)));
explicit HType(Type t) : type_(t) { }
Type type_;
int16_t type_;
};
@ -611,8 +617,8 @@ class HValue: public ZoneObject {
int id_;
Representation representation_;
SmallPointerList<HValue> uses_;
HType type_;
SmallPointerList<HValue> uses_;
Range* range_;
int flags_;