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测试while(u--);和while(u)u--;的区别

2022-04-21 20:01:00 【delacrxoix_xu】

测试结果居然效率二者不一样。u=500;while(u--);慢一些。执行一次用时2300ns。后者快一些，1900ns。

测试方法：连续执行100000次，统计平均时间。

 

 

cpu: intel core2 4300 1.8GHz

OS: x86_64-suse-linux

使用GCC。版本：4.5.0 20100604.

以下是代码。

 

#include <gtk/gtk.h>



int main(int argc,char **argv)
{
	//make some test...and Ajust the param
	if(1)
	{
		GTimeVal tStart,tEnd;
		g_get_current_time(&tStart);
		gchar str[100] = "while(u--)";
		gint loops = 100000;
		gint u_org = 500;
		gint loops_cpy = loops;
		while(loops_cpy--)
		{
			gint u = u_org;//stop and have a rest before each packet
			while(u--);
		}
		g_get_current_time(&tEnd);
		gfloat time_msec = (1000000.00*(tEnd.tv_sec - tStart.tv_sec)+ tEnd.tv_usec-tStart.tv_usec)/1000;
		gfloat time_each = time_msec / loops * 1000000;
		g_print("Time %s: %.2fms used for %d loops. Each loop %.2fns\n",str,time_msec,loops,time_each);
	}


	if(1)
	{
		GTimeVal tStart,tEnd;
		g_get_current_time(&tStart);
		gchar str[100] = "while(u)u--";
		gint loops = 100000;
		gint u_org = 500;
		gint loops_cpy = loops;
		while(loops_cpy--)
		{
			gint u = u_org;//stop and have a rest before each packet
			while(u)u--;
		}
		g_get_current_time(&tEnd);
		gfloat time_msec = (1000000.00*(tEnd.tv_sec - tStart.tv_sec)+ tEnd.tv_usec-tStart.tv_usec)/1000;
		gfloat time_each = time_msec / loops * 1000000;
		g_print("Time %s: %.2fms used for %d loops. Each loop %.2fns\n",str,time_msec,loops,time_each);
	}
	return 0;
}









 


 


 


 


 


 


 


汇编代码：


 


	.file	"a.c"
	.section	.debug_abbrev,"",@progbits
.Ldebug_abbrev0:
	.section	.debug_info,"",@progbits
.Ldebug_info0:
	.section	.debug_line,"",@progbits
.Ldebug_line0:
	.text
.Ltext0:
	.section	.rodata
	.align 8
.LC3:
	.string	"Time %s: %.2fms used for %d loops. Each loop %.2fns\n"
	.text
.globl main
	.type	main, @function
main:
.LFB9:
	.file 1 "a.c"
	.loc 1 6 0
	.cfi_startproc
	pushq	%rbp
.LCFI0:
	.cfi_def_cfa_offset 16
	movq	%rsp, %rbp
	.cfi_offset 6, -16
.LCFI1:
	.cfi_def_cfa_register 6
	subq	$240, %rsp
	movl	%edi, -228(%rbp)
	movq	%rsi, -240(%rbp)
.LBB2:
	.loc 1 11 0
	leaq	-64(%rbp), %rax
	movq	%rax, %rdi
	call	g_get_current_time
	.loc 1 12 0
	movl	$1818847351, -224(%rbp)
	movl	$762652773, -220(%rbp)
	movq	$10541, -216(%rbp)
	leaq	-208(%rbp), %rdx
	movl	$0, %eax
	movl	$10, %ecx
	movq	%rdx, %rdi
	rep stosq
	movq	%rdi, %rdx
	movl	%eax, (%rdx)
	addq	$4, %rdx
	.loc 1 13 0
	movl	$100000, -20(%rbp)
	.loc 1 14 0
	movl	$500, -24(%rbp)
	.loc 1 15 0
	movl	-20(%rbp), %eax
	movl	%eax, -4(%rbp)
	.loc 1 16 0
	jmp	.L2
.L4:
.LBB3:
	.loc 1 18 0
	movl	-24(%rbp), %eax
	movl	%eax, -8(%rbp)
	.loc 1 19 0
	nop
.L3:
	.loc 1 19 0 is_stmt 0 discriminator 1
	cmpl	$0, -8(%rbp)
	setne	%al
	subl	$1, -8(%rbp)
	testb	%al, %al
	jne	.L3
.L2:
.LBE3:
	.loc 1 16 0 is_stmt 1 discriminator 1
	cmpl	$0, -4(%rbp)
	setne	%al
	subl	$1, -4(%rbp)
	testb	%al, %al
	jne	.L4
	.loc 1 21 0
	leaq	-80(%rbp), %rax
	movq	%rax, %rdi
	call	g_get_current_time
	.loc 1 22 0
	movq	-80(%rbp), %rdx
	movq	-64(%rbp), %rax
	movq	%rdx, %rcx
	subq	%rax, %rcx
	movq	%rcx, %rax
	cvtsi2sdq	%rax, %xmm0
	movsd	.LC0(%rip), %xmm1
	mulsd	%xmm0, %xmm1
	movq	-72(%rbp), %rax
	cvtsi2sdq	%rax, %xmm0
	addsd	%xmm1, %xmm0
	movq	-56(%rbp), %rax
	cvtsi2sdq	%rax, %xmm1
	subsd	%xmm1, %xmm0
	movsd	.LC1(%rip), %xmm1
	divsd	%xmm1, %xmm0
	unpcklpd	%xmm0, %xmm0
	cvtpd2ps	%xmm0, %xmm0
	movss	%xmm0, -28(%rbp)
	.loc 1 23 0
	cvtsi2ss	-20(%rbp), %xmm0
	movss	-28(%rbp), %xmm1
	movaps	%xmm1, %xmm2
	divss	%xmm0, %xmm2
	movaps	%xmm2, %xmm0
	movss	.LC2(%rip), %xmm1
	mulss	%xmm1, %xmm0
	movss	%xmm0, -32(%rbp)
	.loc 1 24 0
	movss	-32(%rbp), %xmm1
	cvtps2pd	%xmm1, %xmm1
	movss	-28(%rbp), %xmm0
	cvtps2pd	%xmm0, %xmm0
	movl	-20(%rbp), %edx
	leaq	-224(%rbp), %rax
	movq	%rax, %rsi
	movl	$.LC3, %edi
	movl	$2, %eax
	call	g_print
.LBE2:
.LBB4:
	.loc 1 31 0
	leaq	-96(%rbp), %rax
	movq	%rax, %rdi
	call	g_get_current_time
	.loc 1 32 0
	movl	$1818847351, -224(%rbp)
	movl	$695543909, -220(%rbp)
	movq	$2960757, -216(%rbp)
	leaq	-208(%rbp), %rdx
	movl	$0, %eax
	movl	$10, %ecx
	movq	%rdx, %rdi
	rep stosq
	movq	%rdi, %rdx
	movl	%eax, (%rdx)
	addq	$4, %rdx
	.loc 1 33 0
	movl	$100000, -36(%rbp)
	.loc 1 34 0
	movl	$500, -40(%rbp)
	.loc 1 35 0
	movl	-36(%rbp), %eax
	movl	%eax, -12(%rbp)
	.loc 1 36 0
	jmp	.L5
.L8:
.LBB5:
	.loc 1 38 0
	movl	-40(%rbp), %eax
	movl	%eax, -16(%rbp)
	.loc 1 39 0
	jmp	.L6
.L7:
	.loc 1 39 0 is_stmt 0 discriminator 2
	subl	$1, -16(%rbp)
.L6:
	.loc 1 39 0 discriminator 1
	cmpl	$0, -16(%rbp)
	jne	.L7
.L5:
.LBE5:
	.loc 1 36 0 is_stmt 1 discriminator 1
	cmpl	$0, -12(%rbp)
	setne	%al
	subl	$1, -12(%rbp)
	testb	%al, %al
	jne	.L8
	.loc 1 41 0
	leaq	-112(%rbp), %rax
	movq	%rax, %rdi
	call	g_get_current_time
	.loc 1 42 0
	movq	-112(%rbp), %rdx
	movq	-96(%rbp), %rax
	movq	%rdx, %rcx
	subq	%rax, %rcx
	movq	%rcx, %rax
	cvtsi2sdq	%rax, %xmm0
	movsd	.LC0(%rip), %xmm1
	mulsd	%xmm0, %xmm1
	movq	-104(%rbp), %rax
	cvtsi2sdq	%rax, %xmm0
	addsd	%xmm1, %xmm0
	movq	-88(%rbp), %rax
	cvtsi2sdq	%rax, %xmm1
	subsd	%xmm1, %xmm0
	movsd	.LC1(%rip), %xmm1
	divsd	%xmm1, %xmm0
	unpcklpd	%xmm0, %xmm0
	cvtpd2ps	%xmm0, %xmm0
	movss	%xmm0, -44(%rbp)
	.loc 1 43 0
	cvtsi2ss	-36(%rbp), %xmm0
	movss	-44(%rbp), %xmm1
	movaps	%xmm1, %xmm2
	divss	%xmm0, %xmm2
	movaps	%xmm2, %xmm0
	movss	.LC2(%rip), %xmm1
	mulss	%xmm1, %xmm0
	movss	%xmm0, -48(%rbp)
	.loc 1 44 0
	movss	-48(%rbp), %xmm1
	cvtps2pd	%xmm1, %xmm1
	movss	-44(%rbp), %xmm0
	cvtps2pd	%xmm0, %xmm0
	movl	-36(%rbp), %edx
	leaq	-224(%rbp), %rax
	movq	%rax, %rsi
	movl	$.LC3, %edi
	movl	$2, %eax
	call	g_print
.LBE4:
	.loc 1 46 0
	movl	$0, %eax
	.loc 1 47 0
	leave
.LCFI2:
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE9:
	.size	main, .-main
	.section	.rodata
	.align 8
.LC0:
	.long	0
	.long	1093567616
	.align 8
.LC1:
	.long	0
	.long	1083129856
	.align 4
.LC2:
	.long	1232348160
	.text
.Letext0:
	.section	.debug_loc,"",@progbits
.Ldebug_loc0:
.LLST0:
	.quad	.LFB9-.Ltext0
	.quad	.LCFI0-.Ltext0
	.value	0x2
	.byte	0x77
	.sleb128 8
	.quad	.LCFI0-.Ltext0
	.quad	.LCFI1-.Ltext0
	.value	0x2
	.byte	0x77
	.sleb128 16
	.quad	.LCFI1-.Ltext0
	.quad	.LCFI2-.Ltext0
	.value	0x2
	.byte	0x76
	.sleb128 16
	.quad	.LCFI2-.Ltext0
	.quad	.LFE9-.Ltext0
	.value	0x2
	.byte	0x77
	.sleb128 8
	.quad	0x0
	.quad	0x0
	.file 2 "/usr/include/glib-2.0/glib/gtypes.h"
	.section	.debug_info
	.long	0x299
	.value	0x2
	.long	.Ldebug_abbrev0
	.byte	0x8
	.uleb128 0x1
	.long	.LASF29
	.byte	0x1
	.string	"a.c"
	.long	.LASF30
	.quad	.Ltext0
	.quad	.Letext0
	.long	.Ldebug_line0
	.uleb128 0x2
	.byte	0x8
	.byte	0x5
	.long	.LASF0
	.uleb128 0x2
	.byte	0x8
	.byte	0x7
	.long	.LASF1
	.uleb128 0x3
	.byte	0x4
	.byte	0x5
	.string	"int"
	.uleb128 0x2
	.byte	0x1
	.byte	0x6
	.long	.LASF2
	.uleb128 0x2
	.byte	0x1
	.byte	0x8
	.long	.LASF3
	.uleb128 0x2
	.byte	0x2
	.byte	0x5
	.long	.LASF4
	.uleb128 0x2
	.byte	0x2
	.byte	0x7
	.long	.LASF5
	.uleb128 0x2
	.byte	0x4
	.byte	0x7
	.long	.LASF6
	.uleb128 0x4
	.byte	0x8
	.byte	0x7
	.uleb128 0x2
	.byte	0x1
	.byte	0x6
	.long	.LASF7
	.uleb128 0x2
	.byte	0x8
	.byte	0x4
	.long	.LASF8
	.uleb128 0x5
	.long	.LASF9
	.byte	0x2
	.byte	0x2e
	.long	0x68
	.uleb128 0x5
	.long	.LASF10
	.byte	0x2
	.byte	0x30
	.long	0x2d
	.uleb128 0x5
	.long	.LASF11
	.byte	0x2
	.byte	0x31
	.long	0x3b
	.uleb128 0x5
	.long	.LASF12
	.byte	0x2
	.byte	0x39
	.long	0xa2
	.uleb128 0x2
	.byte	0x4
	.byte	0x4
	.long	.LASF13
	.uleb128 0x6
	.long	.LASF14
	.byte	0x2
	.value	0x1a2
	.long	0xb5
	.uleb128 0x7
	.long	.LASF31
	.byte	0x10
	.byte	0x2
	.value	0x1a4
	.long	0xe1
	.uleb128 0x8
	.long	.LASF15
	.byte	0x2
	.value	0x1a6
	.long	0x81
	.byte	0x2
	.byte	0x23
	.uleb128 0x0
	.uleb128 0x8
	.long	.LASF16
	.byte	0x2
	.value	0x1a7
	.long	0x81
	.byte	0x2
	.byte	0x23
	.uleb128 0x8
	.byte	0x0
	.uleb128 0x9
	.byte	0x8
	.long	0x68
	.uleb128 0x2
	.byte	0x8
	.byte	0x7
	.long	.LASF17
	.uleb128 0x2
	.byte	0x8
	.byte	0x5
	.long	.LASF18
	.uleb128 0x2
	.byte	0x10
	.byte	0x4
	.long	.LASF19
	.uleb128 0x9
	.byte	0x8
	.long	0xe1
	.uleb128 0xa
	.byte	0x1
	.long	.LASF32
	.byte	0x1
	.byte	0x5
	.byte	0x1
	.long	0x3b
	.quad	.LFB9
	.quad	.LFE9
	.long	.LLST0
	.long	0x290
	.uleb128 0xb
	.long	.LASF20
	.byte	0x1
	.byte	0x5
	.long	0x3b
	.byte	0x3
	.byte	0x91
	.sleb128 -244
	.uleb128 0xb
	.long	.LASF21
	.byte	0x1
	.byte	0x5
	.long	0xfc
	.byte	0x3
	.byte	0x91
	.sleb128 -256
	.uleb128 0xc
	.quad	.LBB2
	.quad	.LBE2
	.long	0x1ec
	.uleb128 0xd
	.long	.LASF22
	.byte	0x1
	.byte	0xa
	.long	0xa9
	.byte	0x3
	.byte	0x91
	.sleb128 -80
	.uleb128 0xd
	.long	.LASF23
	.byte	0x1
	.byte	0xa
	.long	0xa9
	.byte	0x3
	.byte	0x91
	.sleb128 -96
	.uleb128 0xe
	.string	"str"
	.byte	0x1
	.byte	0xc
	.long	0x290
	.byte	0x3
	.byte	0x91
	.sleb128 -240
	.uleb128 0xd
	.long	.LASF24
	.byte	0x1
	.byte	0xd
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -36
	.uleb128 0xd
	.long	.LASF25
	.byte	0x1
	.byte	0xe
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -40
	.uleb128 0xd
	.long	.LASF26
	.byte	0x1
	.byte	0xf
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -20
	.uleb128 0xd
	.long	.LASF27
	.byte	0x1
	.byte	0x16
	.long	0x97
	.byte	0x2
	.byte	0x91
	.sleb128 -44
	.uleb128 0xd
	.long	.LASF28
	.byte	0x1
	.byte	0x17
	.long	0x97
	.byte	0x2
	.byte	0x91
	.sleb128 -48
	.uleb128 0xf
	.quad	.LBB3
	.quad	.LBE3
	.uleb128 0xe
	.string	"u"
	.byte	0x1
	.byte	0x12
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -24
	.byte	0x0
	.byte	0x0
	.uleb128 0xf
	.quad	.LBB4
	.quad	.LBE4
	.uleb128 0xd
	.long	.LASF22
	.byte	0x1
	.byte	0x1e
	.long	0xa9
	.byte	0x3
	.byte	0x91
	.sleb128 -112
	.uleb128 0xd
	.long	.LASF23
	.byte	0x1
	.byte	0x1e
	.long	0xa9
	.byte	0x3
	.byte	0x91
	.sleb128 -128
	.uleb128 0xe
	.string	"str"
	.byte	0x1
	.byte	0x20
	.long	0x290
	.byte	0x3
	.byte	0x91
	.sleb128 -240
	.uleb128 0xd
	.long	.LASF24
	.byte	0x1
	.byte	0x21
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -52
	.uleb128 0xd
	.long	.LASF25
	.byte	0x1
	.byte	0x22
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -56
	.uleb128 0xd
	.long	.LASF26
	.byte	0x1
	.byte	0x23
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -28
	.uleb128 0xd
	.long	.LASF27
	.byte	0x1
	.byte	0x2a
	.long	0x97
	.byte	0x2
	.byte	0x91
	.sleb128 -60
	.uleb128 0xd
	.long	.LASF28
	.byte	0x1
	.byte	0x2b
	.long	0x97
	.byte	0x2
	.byte	0x91
	.sleb128 -64
	.uleb128 0xf
	.quad	.LBB5
	.quad	.LBE5
	.uleb128 0xe
	.string	"u"
	.byte	0x1
	.byte	0x26
	.long	0x8c
	.byte	0x2
	.byte	0x91
	.sleb128 -32
	.byte	0x0
	.byte	0x0
	.byte	0x0
	.uleb128 0x10
	.long	0x76
	.uleb128 0x11
	.long	0x65
	.byte	0x63
	.byte	0x0
	.byte	0x0
	.section	.debug_abbrev
	.uleb128 0x1
	.uleb128 0x11
	.byte	0x1
	.uleb128 0x25
	.uleb128 0xe
	.uleb128 0x13
	.uleb128 0xb
	.uleb128 0x3
	.uleb128 0x8
	.uleb128 0x1b
	.uleb128 0xe
	.uleb128 0x11
	.uleb128 0x1
	.uleb128 0x12
	.uleb128 0x1
	.uleb128 0x10
	.uleb128 0x6
	.byte	0x0
	.byte	0x0
	.uleb128 0x2
	.uleb128 0x24
	.byte	0x0
	.uleb128 0xb
	.uleb128 0xb
	.uleb128 0x3e
	.uleb128 0xb
	.uleb128 0x3
	.uleb128 0xe
	.byte	0x0
	.byte	0x0
	.uleb128 0x3
	.uleb128 0x24
	.byte	0x0
	.uleb128 0xb
	.uleb128 0xb
	.uleb128 0x3e
	.uleb128 0xb
	.uleb128 0x3
	.uleb128 0x8
	.byte	0x0
	.byte	0x0
	.uleb128 0x4
	.uleb128 0x24
	.byte	0x0
	.uleb128 0xb
	.uleb128 0xb
	.uleb128 0x3e
	.uleb128 0xb
	.byte	0x0
	.byte	0x0
	.uleb128 0x5
	.uleb128 0x16
	.byte	0x0
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0xb
	.uleb128 0x49
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0x6
	.uleb128 0x16
	.byte	0x0
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0x5
	.uleb128 0x49
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0x7
	.uleb128 0x13
	.byte	0x1
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0xb
	.uleb128 0xb
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0x5
	.uleb128 0x1
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0x8
	.uleb128 0xd
	.byte	0x0
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0x5
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x38
	.uleb128 0xa
	.byte	0x0
	.byte	0x0
	.uleb128 0x9
	.uleb128 0xf
	.byte	0x0
	.uleb128 0xb
	.uleb128 0xb
	.uleb128 0x49
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0xa
	.uleb128 0x2e
	.byte	0x1
	.uleb128 0x3f
	.uleb128 0xc
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0xb
	.uleb128 0x27
	.uleb128 0xc
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x11
	.uleb128 0x1
	.uleb128 0x12
	.uleb128 0x1
	.uleb128 0x40
	.uleb128 0x6
	.uleb128 0x1
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0xb
	.uleb128 0x5
	.byte	0x0
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0xb
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x2
	.uleb128 0xa
	.byte	0x0
	.byte	0x0
	.uleb128 0xc
	.uleb128 0xb
	.byte	0x1
	.uleb128 0x11
	.uleb128 0x1
	.uleb128 0x12
	.uleb128 0x1
	.uleb128 0x1
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0xd
	.uleb128 0x34
	.byte	0x0
	.uleb128 0x3
	.uleb128 0xe
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0xb
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x2
	.uleb128 0xa
	.byte	0x0
	.byte	0x0
	.uleb128 0xe
	.uleb128 0x34
	.byte	0x0
	.uleb128 0x3
	.uleb128 0x8
	.uleb128 0x3a
	.uleb128 0xb
	.uleb128 0x3b
	.uleb128 0xb
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x2
	.uleb128 0xa
	.byte	0x0
	.byte	0x0
	.uleb128 0xf
	.uleb128 0xb
	.byte	0x1
	.uleb128 0x11
	.uleb128 0x1
	.uleb128 0x12
	.uleb128 0x1
	.byte	0x0
	.byte	0x0
	.uleb128 0x10
	.uleb128 0x1
	.byte	0x1
	.uleb128 0x49
	.uleb128 0x13
	.byte	0x0
	.byte	0x0
	.uleb128 0x11
	.uleb128 0x21
	.byte	0x0
	.uleb128 0x49
	.uleb128 0x13
	.uleb128 0x2f
	.uleb128 0xb
	.byte	0x0
	.byte	0x0
	.byte	0x0
	.section	.debug_pubnames,"",@progbits
	.long	0x17
	.value	0x2
	.long	.Ldebug_info0
	.long	0x29d
	.long	0x102
	.string	"main"
	.long	0x0
	.section	.debug_pubtypes,"",@progbits
	.long	0x51
	.value	0x2
	.long	.Ldebug_info0
	.long	0x29d
	.long	0x76
	.string	"gchar"
	.long	0x81
	.string	"glong"
	.long	0x8c
	.string	"gint"
	.long	0x97
	.string	"gfloat"
	.long	0xa9
	.string	"GTimeVal"
	.long	0xb5
	.string	"_GTimeVal"
	.long	0x0
	.section	.debug_aranges,"",@progbits
	.long	0x2c
	.value	0x2
	.long	.Ldebug_info0
	.byte	0x8
	.byte	0x0
	.value	0x0
	.value	0x0
	.quad	.Ltext0
	.quad	.Letext0-.Ltext0
	.quad	0x0
	.quad	0x0
	.section	.debug_str,"MS",@progbits,1
.LASF13:
	.string	"float"
.LASF12:
	.string	"gfloat"
.LASF9:
	.string	"gchar"
.LASF29:
	.string	"GNU C 4.5.0 20100604 [gcc-4_5-branch revision 160292]"
.LASF10:
	.string	"glong"
.LASF24:
	.string	"loops"
.LASF3:
	.string	"unsigned char"
.LASF26:
	.string	"loops_cpy"
.LASF1:
	.string	"long unsigned int"
.LASF5:
	.string	"short unsigned int"
.LASF22:
	.string	"tStart"
.LASF8:
	.string	"double"
.LASF32:
	.string	"main"
.LASF15:
	.string	"tv_sec"
.LASF6:
	.string	"unsigned int"
.LASF14:
	.string	"GTimeVal"
.LASF30:
	.string	"/root/Desktop/xudong/workhome_gtk/test_while"
.LASF16:
	.string	"tv_usec"
.LASF31:
	.string	"_GTimeVal"
.LASF11:
	.string	"gint"
.LASF27:
	.string	"time_msec"
.LASF20:
	.string	"argc"
.LASF23:
	.string	"tEnd"
.LASF18:
	.string	"long long int"
.LASF28:
	.string	"time_each"
.LASF7:
	.string	"char"
.LASF4:
	.string	"short int"
.LASF21:
	.string	"argv"
.LASF0:
	.string	"long int"
.LASF19:
	.string	"long double"
.LASF25:
	.string	"u_org"
.LASF2:
	.string	"signed char"
.LASF17:
	.string	"long long unsigned int"
	.ident	"GCC: (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]"
	.section	.comment.SUSE.OPTs,"MS",@progbits,1
	.string	"ospWG"
	.section	.note.GNU-stack,"",@progbits





 


 


 


 


 


                

                    
版权声明 

                        本文为[delacrxoix_xu]所创，转载请带上原文链接，感谢

                        https://blog.csdn.net/delacroix_xu/article/details/6752772
                    

                

            


            
            



            


        

        

        

    

    

        



        


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