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    /* ===-- addvsi3.c - Implement __addvsi3 -----------------------------------===  | 
    
    
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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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     * This file implements __addvsi3 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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    /* Returns: a + b */  | 
    
    
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    /* Effects: aborts if a + b overflows */  | 
    
    
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    COMPILER_RT_ABI si_int  | 
    
    
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    __addvsi3(si_int a, si_int b)  | 
    
    
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    { | 
    
    
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        si_int s = (su_int) a + (su_int) 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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    }  |