Ignore:
Timestamp:
Jul 1, 2011, 9:33:46 AM (14 years ago)
Author:
[email protected]
Message:

2011-06-30 Oliver Hunt <[email protected]>

Reviewed by Gavin Barraclough.

Add optimised paths for a few maths functions
https://bugs.webkit.org/show_bug.cgi?id=63757

Relanding as a Mac only patch.

This adds specialised thunks for Math.abs, Math.round, Math.ceil,
Math.floor, Math.log, and Math.exp as they are apparently more
important in real web content than we thought, which is somewhat
mind-boggling. On average doubles the performance of the common
cases (eg. actually passing numbers in). They're not as efficient
as they could be, but this way gives them the most portability.

  • assembler/MacroAssemblerARM.h: (JSC::MacroAssemblerARM::supportsDoubleBitops): (JSC::MacroAssemblerARM::andnotDouble):
  • assembler/MacroAssemblerARMv7.h: (JSC::MacroAssemblerARMv7::supportsDoubleBitops): (JSC::MacroAssemblerARMv7::andnotDouble):
  • assembler/MacroAssemblerMIPS.h: (JSC::MacroAssemblerMIPS::andnotDouble): (JSC::MacroAssemblerMIPS::supportsDoubleBitops):
  • assembler/MacroAssemblerSH4.h: (JSC::MacroAssemblerSH4::supportsDoubleBitops): (JSC::MacroAssemblerSH4::andnotDouble):
  • assembler/MacroAssemblerX86.h: (JSC::MacroAssemblerX86::supportsDoubleBitops):
  • assembler/MacroAssemblerX86Common.h: (JSC::MacroAssemblerX86Common::andnotDouble):
  • assembler/MacroAssemblerX86_64.h: (JSC::MacroAssemblerX86_64::supportsDoubleBitops):
  • assembler/X86Assembler.h: (JSC::X86Assembler::andnpd_rr):
  • create_hash_table:
  • jit/SpecializedThunkJIT.h: (JSC::SpecializedThunkJIT::finalize): (JSC::SpecializedThunkJIT::callDoubleToDouble):
  • jit/ThunkGenerators.cpp: (JSC::floorThunkGenerator): (JSC::ceilThunkGenerator): (JSC::roundThunkGenerator): (JSC::expThunkGenerator): (JSC::logThunkGenerator): (JSC::absThunkGenerator):
  • jit/ThunkGenerators.h:
File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/Source/JavaScriptCore/jit/JSInterfaceJIT.h

    r90215 r90237  
    272272        done.link(this);
    273273        return notInt;
    274     }   
     274    }
     275
    275276#endif
    276277
     
    311312        return notNumber;
    312313    }
    313    
     314
    314315    ALWAYS_INLINE void JSInterfaceJIT::emitFastArithImmToInt(RegisterID)
    315316    {
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