GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcompiler_rt/ashrti3.c Lines: 0 9 0.0 %
Date: 2017-11-13 Branches: 0 4 0.0 %

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/* ===-- ashrti3.c - Implement __ashrti3 -----------------------------------===
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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 __ashrti3 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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#ifdef CRT_HAS_128BIT
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/* Returns: arithmetic a >> b */
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/* Precondition:  0 <= b < bits_in_tword */
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COMPILER_RT_ABI ti_int
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__ashrti3(ti_int a, si_int b)
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{
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    const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT);
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    twords input;
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    twords result;
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    input.all = a;
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    if (b & bits_in_dword)  /* bits_in_dword <= b < bits_in_tword */
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    {
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        /* result.s.high = input.s.high < 0 ? -1 : 0 */
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        result.s.high = input.s.high >> (bits_in_dword - 1);
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        result.s.low = input.s.high >> (b - bits_in_dword);
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    }
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    else  /* 0 <= b < bits_in_dword */
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    {
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        if (b == 0)
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            return a;
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        result.s.high  = input.s.high >> b;
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        result.s.low = (input.s.high << (bits_in_dword - b)) | (input.s.low >> b);
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    }
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    return result.all;
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}
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#endif /* CRT_HAS_128BIT */