GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcompiler_rt/clzdi2.c Lines: 0 4 0.0 %
Date: 2017-11-13 Branches: 0 0 0.0 %

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/* ===-- clzdi2.c - Implement __clzdi2 -------------------------------------===
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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 __clzdi2 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: the number of leading 0-bits */
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/* Precondition: a != 0 */
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COMPILER_RT_ABI si_int
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__clzdi2(di_int a)
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{
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    dwords x;
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    x.all = a;
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    const si_int f = -(x.s.high == 0);
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    return __builtin_clz((x.s.high & ~f) | (x.s.low & f)) +
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           (f & ((si_int)(sizeof(si_int) * CHAR_BIT)));
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}