Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcompiler_rt/muldi3.c	Lines:	0	18	0.0 %
Date:	2017-11-13	Branches:	0	0	0.0 %


/* ===-- muldi3.c - Implement __muldi3 -------------------------------------===
 *
 *                     The LLVM Compiler Infrastructure
 *
 * This file is dual licensed under the MIT and the University of Illinois Open
 * Source Licenses. See LICENSE.TXT for details.
 *
 * ===----------------------------------------------------------------------===
 *
 * This file implements __muldi3 for the compiler_rt library.
 *
 * ===----------------------------------------------------------------------===
 */

#include "int_lib.h"

/* Returns: a * b */

static
di_int
__muldsi3(su_int a, su_int b)
{
    dwords r;
    const int bits_in_word_2 = (int)(sizeof(si_int) * CHAR_BIT) / 2;
    const su_int lower_mask = (su_int)~0 >> bits_in_word_2;
    r.s.low = (a & lower_mask) * (b & lower_mask);
    su_int t = r.s.low >> bits_in_word_2;
    r.s.low &= lower_mask;
    t += (a >> bits_in_word_2) * (b & lower_mask);
    r.s.low += (t & lower_mask) << bits_in_word_2;
    r.s.high = t >> bits_in_word_2;
    t = r.s.low >> bits_in_word_2;
    r.s.low &= lower_mask;
    t += (b >> bits_in_word_2) * (a & lower_mask);
    r.s.low += (t & lower_mask) << bits_in_word_2;
    r.s.high += t >> bits_in_word_2;
    r.s.high += (a >> bits_in_word_2) * (b >> bits_in_word_2);
    return r.all;
}

/* Returns: a * b */

ARM_EABI_FNALIAS(lmul, muldi3)

COMPILER_RT_ABI di_int
__muldi3(di_int a, di_int b)
{
    dwords x;
    x.all = a;
    dwords y;
    y.all = b;
    dwords r;
    r.all = __muldsi3(x.s.low, y.s.low);
    r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
    return r.all;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* ===-- muldi3.c - Implement __muldi3 -------------------------------------===
2			*
3			* The LLVM Compiler Infrastructure
4			*
5			* This file is dual licensed under the MIT and the University of Illinois Open
6			* Source Licenses. See LICENSE.TXT for details.
7			*
8			* ===----------------------------------------------------------------------===
9			*
10			* This file implements __muldi3 for the compiler_rt library.
11			*
12			* ===----------------------------------------------------------------------===
13			*/
14
15			#include "int_lib.h"
16
17			/* Returns: a * b */
18
19			static
20			di_int
21			__muldsi3(su_int a, su_int b)
22			{
23			dwords r;
24			const int bits_in_word_2 = (int)(sizeof(si_int) * CHAR_BIT) / 2;
25			const su_int lower_mask = (su_int)~0 >> bits_in_word_2;
26			r.s.low = (a & lower_mask) * (b & lower_mask);
27			su_int t = r.s.low >> bits_in_word_2;
28			r.s.low &= lower_mask;
29			t += (a >> bits_in_word_2) * (b & lower_mask);
30			r.s.low += (t & lower_mask) << bits_in_word_2;
31			r.s.high = t >> bits_in_word_2;
32			t = r.s.low >> bits_in_word_2;
33			r.s.low &= lower_mask;
34			t += (b >> bits_in_word_2) * (a & lower_mask);
35			r.s.low += (t & lower_mask) << bits_in_word_2;
36			r.s.high += t >> bits_in_word_2;
37			r.s.high += (a >> bits_in_word_2) * (b >> bits_in_word_2);
38			return r.all;
39			}
40
41			/* Returns: a * b */
42
43			ARM_EABI_FNALIAS(lmul, muldi3)
44
45			COMPILER_RT_ABI di_int
46			__muldi3(di_int a, di_int b)
47			{
48			dwords x;
49			x.all = a;
50			dwords y;
51			y.all = b;
52			dwords r;
53			r.all = __muldsi3(x.s.low, y.s.low);
54			r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
55			return r.all;
56			}