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Core/DSPCore: Improve Interpreter address register add/sub, convert to

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assembler for JIT. Replace JIT ToMask() with a different variant. Remove
 superfluous zeroWriteBackLog calls(added by me).
Core/Common: Don't bother creating a string and calling into a Logs trigger()
 when there is noone listening. Change AtomicLoadAcquire for gcc to just
 make the compiler not reorder memory accesses around it instead of doing
 a full memory barrier, per the comment in the win32 variant.
Core/AudioCommon: Fix a use of uninitialized variable inside libalsa.

Microbenchmarking results for ToMask variants:(1 000 000 000 iterations):
             cpu\variant| shifts | bit scan
intel mobile C2D@2.5GHz | 5.5s   | 4.0s
amd athlon64x2@3GHz     | 6.1s   | 6.4s
(including some constant overhead identical to both variants)



git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6667 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
pierre
2010-12-27 15:05:18 +00:00
parent 0e737235a8
commit c33f46406e
9 changed files with 214 additions and 194 deletions
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4
Source/Core/DSPCore/Src/DSPTables.cpp
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@ -37,8 +37,8 @@ const DSPOPCTemplate opcodes[] =
{"DAR", 0x0004, 0xfffc, DSPInterpreter::dar, &DSPEmitter::dar, 1, 1, {{P_REG, 1, 0, 0, 0x0003}}, false, false, false, false, false},
{"IAR", 0x0008, 0xfffc, DSPInterpreter::iar, &DSPEmitter::iar, 1, 1, {{P_REG, 1, 0, 0, 0x0003}}, false, false, false, false, false},
{"SUBARN", 0x000c, 0xfffc, DSPInterpreter::subarn, NULL/*&DSPEmitter::subarn*/, 1, 1, {{P_REG, 1, 0, 0, 0x0003}}, false, false, false, false, false},
{"ADDARN", 0x0010, 0xfff0, DSPInterpreter::addarn, NULL/*&DSPEmitter::addarn*/, 1, 2, {{P_REG, 1, 0, 0, 0x0003}, {P_REG04, 1, 0, 2, 0x000c}}, false, false, false, false, false},
{"SUBARN", 0x000c, 0xfffc, DSPInterpreter::subarn, &DSPEmitter::subarn, 1, 1, {{P_REG, 1, 0, 0, 0x0003}}, false, false, false, false, false},
{"ADDARN", 0x0010, 0xfff0, DSPInterpreter::addarn, &DSPEmitter::addarn, 1, 2, {{P_REG, 1, 0, 0, 0x0003}, {P_REG04, 1, 0, 2, 0x000c}}, false, false, false, false, false},
{"HALT", 0x0021, 0xffff, DSPInterpreter::halt, NULL, 1, 0, {}, false, true, true, false, false},