41 lines
845 B
C
41 lines
845 B
C
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/* ===-- addvti3.c - Implement __addvti3 -----------------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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* This file is dual licensed under the MIT and the University of Illinois Open
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* Source Licenses. See LICENSE.TXT for details.
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*
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* ===----------------------------------------------------------------------===
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*
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* This file implements __addvti3 for the compiler_rt library.
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*
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* ===----------------------------------------------------------------------===
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*/
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#include "int_lib.h"
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#if __x86_64
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/* Returns: a + b */
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/* Effects: aborts if a + b overflows */
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ti_int
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__addvti3(ti_int a, ti_int b)
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{
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ti_int s = a + b;
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if (b >= 0)
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{
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if (s < a)
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compilerrt_abort();
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}
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else
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{
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if (s >= a)
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compilerrt_abort();
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}
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return s;
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}
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#endif
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