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Instructions referencing registers r8-r15 take an additional byte to encode. `reg_downcount` may be assigned to one of these registers, so it is a small size win to store the downcount value in `RSCRATCH` first. Before: 33 D2 xor edx,edx 44 8B 6D 64 mov r13d,dword ptr [rbp+64h] 45 85 ED test r13d,r13d 7E 30 jle 0000023546B43F6D 44 8B B5 D4 02 00 00 mov r14d,dword ptr [rbp+2D4h] 41 8B C5 mov eax,r13d BF 07 00 00 00 mov edi,7 F7 F7 div eax,edi After: 33 D2 xor edx,edx 8B 45 64 mov eax,dword ptr [rbp+64h] 85 C0 test eax,eax 7E 30 jle 000001AFBBAE359D 44 8B B5 D4 02 00 00 mov r14d,dword ptr [rbp+2D4h] 44 8B E8 mov r13d,eax BF 07 00 00 00 mov edi,7 F7 F7 div eax,edi |
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.. | ||
AudioCommon | ||
Common | ||
Core | ||
DiscIO | ||
DolphinNoGUI | ||
DolphinQt | ||
DolphinTool | ||
InputCommon | ||
MacUpdater | ||
UICommon | ||
UpdaterCommon | ||
VideoBackends | ||
VideoCommon | ||
WinUpdater | ||
CMakeLists.txt | ||
DolphinLib.ARM64.props | ||
DolphinLib.props | ||
DolphinLib.vcxproj | ||
DolphinLib.vcxproj.user | ||
DolphinLib.x64.props |