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We normally check for division by zero to know if we should set the destination register to zero with a XOR. However, when the divisor and destination registers are the same the explicit zeroing can be omitted. In addition, some of the surrounding branching can be simplified as well. Before: 45 85 FF test r15d,r15d 75 05 jne normal_path 45 33 FF xor r15d,r15d EB 0C jmp done normal_path: B8 5A 00 00 00 mov eax,5Ah 99 cdq 41 F7 FF idiv eax,r15d 44 8B F8 mov r15d,eax done: After: 45 85 FF test r15d,r15d 74 0C je done B8 5A 00 00 00 mov eax,5Ah 99 cdq 41 F7 FF idiv eax,r15d 44 8B F8 mov r15d,eax done: |
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| .. | ||
| AudioCommon | ||
| Common | ||
| Core | ||
| DiscIO | ||
| DolphinNoGUI | ||
| DolphinQt | ||
| InputCommon | ||
| MacUpdater | ||
| UICommon | ||
| UpdaterCommon | ||
| VideoBackends | ||
| VideoCommon | ||
| WinUpdater | ||
| CMakeLists.txt | ||
| DolphinLib.ARM64.props | ||
| DolphinLib.props | ||
| DolphinLib.vcxproj | ||
| DolphinLib.vcxproj.user | ||
| DolphinLib.x64.props | ||