mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-02-09 17:41:39 +02:00
![]() 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: |
||
---|---|---|
.. | ||
Android | ||
Core | ||
DSPSpy | ||
DSPTool | ||
PCH | ||
UnitTests | ||
VSProps | ||
.clang-format | ||
CMakeLists.txt | ||
dolphin-emu.sln |