Jit64: divwx - Micro-optimize default case
Both the normal path and the overflow path end with the same
instruction, so their tails can be merged.
Before:
41 8B C7 mov eax,r15d
45 85 C0 test r8d,r8d
74 0D je overflow
3D 00 00 00 80 cmp eax,80000000h
75 0E jne normal_path
41 83 F8 FF cmp r8d,0FFFFFFFFh
75 08 jne normal_path
overflow:
C1 F8 1F sar eax,1Fh
44 8B F0 mov r14d,eax
EB 07 jmp done
normal_path:
99 cdq
41 F7 F8 idiv eax,r8d
44 8B F0 mov r14d,eax
done:
After:
41 8B C7 mov eax,r15d
45 85 C0 test r8d,r8d
74 0D je overflow
3D 00 00 00 80 cmp eax,80000000h
75 0B jne normal_path
41 83 F8 FF cmp r8d,0FFFFFFFFh
75 05 jne normal_path
overflow:
C1 F8 1F sar eax,1Fh
EB 04 jmp done
normal_path:
99 cdq
41 F7 F8 idiv eax,r8d
done:
44 8B F0 mov r14d,eax
Sintendo
83f38388a1