0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
30 lines
826 B
C
30 lines
826 B
C
/* ===-- 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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}
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