Compilation case with clang compiler.
-----
main()
{
  int i;

  for(i=1;i<=2;i++){printf("test out\n"); }
  printf("end\n");
}
-----	
	.text
	.file	"test-opt.c"
	.globl	main                    # -- Begin function main
	.p2align	4, 0x90
	.type	main,@function
main:                                   # @main
	.cfi_startproc
# %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register %rbp
	subq	$16, %rsp
	movl	$0, -4(%rbp)
	movl	$1, -8(%rbp)
.LBB0_1:                                # =>This Inner Loop Header: Depth=1
	cmpl	$2, -8(%rbp)
	jg	.LBB0_4
# %bb.2:                                #   in Loop: Header=BB0_1 Depth=1
	movabsq	$.L.str, %rdi
	movb	$0, %al
	callq	printf
	movl	%eax, -12(%rbp)         # 4-byte Spill
# %bb.3:                                #   in Loop: Header=BB0_1 Depth=1
	movl	-8(%rbp), %eax
	addl	$1, %eax
	movl	%eax, -8(%rbp)
	jmp	.LBB0_1
.LBB0_4:
	movabsq	$.L.str.1, %rdi
	movb	$0, %al
	callq	printf
	movl	-4(%rbp), %ecx
	movl	%eax, -16(%rbp)         # 4-byte Spill
	movl	%ecx, %eax
	addq	$16, %rsp
	popq	%rbp
	retq
.Lfunc_end0:
	.size	main, .Lfunc_end0-main
	.cfi_endproc
                                        # -- End function
	.type	.L.str,@object          # @.str
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str:
	.asciz	"test out\n"
	.size	.L.str, 10

	.type	.L.str.1,@object        # @.str.1
.L.str.1:
	.asciz	"end\n"
	.size	.L.str.1, 5


	.ident	"FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on LLVM 6.0.0)"
	.section	".note.GNU-stack","",@progbits