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Unified Diff: src/x64/macro-assembler-x64.h

Issue 10909007: Sharing of descriptor arrays. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed comments Created 8 years, 3 months ago
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Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 5268fe2a2e961c1069c38380bb60e6f86f659585..89b7962231c7f99edfb38ce8b398476dd9ec0131 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -949,13 +949,15 @@ class MacroAssembler: public Assembler {
void LoadInstanceDescriptors(Register map, Register descriptors);
void EnumLength(Register dst, Register map);
+ void NumberOfOwnDescriptors(Register dst, Register map);
template<typename Field>
void DecodeField(Register reg) {
- static const int full_shift = Field::kShift + kSmiShift;
- static const int low_mask = Field::kMask >> Field::kShift;
- shr(reg, Immediate(full_shift));
- and_(reg, Immediate(low_mask));
+ static const int shift = Field::kShift + kSmiShift;
+ static const int mask = Field::kMask >> Field::kShift;
+ shr(reg, Immediate(shift));
+ and_(reg, Immediate(mask));
+ shl(reg, Immediate(kSmiShift));
}
// Abort execution if argument is not a number. Used in debug code.
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