What does this code do?
Optimizing MSVC 2010:
_a$ = 8
_f PROC
mov ecx, DWORD PTR _a$[esp-4]
mov eax, -968154503 ; c64b2279H
imul ecx
add edx, ecx
sar edx, 9
mov eax, edx
shr eax, 31 ; 0000001fH
add eax, edx
ret 0
_f ENDP
Optimizing GCC 4.9 (ARM64):
f:
mov w1, 8825
movk w1, 0xc64b, lsl 16
smull x1, w0, w1
lsr x1, x1, 32
add w1, w0, w1
asr w1, w1, 9
sub w0, w1, w0, asr 31
ret
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