https://bugs.llvm.org/show_bug.cgi?id=52272
Bug ID: 52272
Summary: Use SIMD to expand memchr
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: david.bolvan...@gmail.com
CC: craig.top...@gmail.com, llvm-bugs@lists.llvm.org,
llvm-...@redking.me.uk, pengfei.w...@intel.com,
spatel+l...@rotateright.com
int* findK(int k, const int* v, unsigned long long n)
{
return(int*)__builtin_memchr(v, k, 32);
}
findK(int, int const*, unsigned long long):
mov r8d, edi
mov edx, 32
mov rdi, rsi
mov esi, r8d
jmp memchr
Better to use SIMD than libcall for some reasonable N?
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