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Justine Tunney 2020-06-15 07:18:57 -07:00
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54
third_party/compiler_rt/cmpdi2.c vendored Normal file
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/* clang-format off */
/* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------===
*
* The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. See LICENSE.TXT for details.
*
* ===----------------------------------------------------------------------===
*
* This file implements __cmpdi2 for the compiler_rt library.
*
* ===----------------------------------------------------------------------===
*/
STATIC_YOINK("huge_compiler_rt_license");
#include "third_party/compiler_rt/int_lib.h"
/* Returns: if (a < b) returns 0
* if (a == b) returns 1
* if (a > b) returns 2
*/
COMPILER_RT_ABI si_int
__cmpdi2(di_int a, di_int b)
{
dwords x;
x.all = a;
dwords y;
y.all = b;
if (x.s.high < y.s.high)
return 0;
if (x.s.high > y.s.high)
return 2;
if (x.s.low < y.s.low)
return 0;
if (x.s.low > y.s.low)
return 2;
return 1;
}
#ifdef __ARM_EABI__
/* Returns: if (a < b) returns -1
* if (a == b) returns 0
* if (a > b) returns 1
*/
COMPILER_RT_ABI si_int
__aeabi_lcmp(di_int a, di_int b)
{
return __cmpdi2(a, b) - 1;
}
#endif