noloop.c tail recursion elimination (see line 79)

noloop.s

	.section	__TEXT,__text,regular,pure_instructions
	.globl	_doScore
	.align	4, 0x90
_doScore:                               ## @doScore
	.cfi_startproc
## BB#0:
	pushq	%rbp
Ltmp3:
	.cfi_def_cfa_offset 16
Ltmp4:
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
Ltmp5:
	.cfi_def_cfa_register %rbp
	pushq	%r15
	pushq	%r14
	pushq	%r13
	pushq	%r12
	pushq	%rbx
	pushq	%rax
Ltmp6:
	.cfi_offset %rbx, -56
Ltmp7:
	.cfi_offset %r12, -48
Ltmp8:
	.cfi_offset %r13, -40
Ltmp9:
	.cfi_offset %r14, -32
Ltmp10:
	.cfi_offset %r15, -24
	movq	%rdx, %r14
	movl	%esi, %ebx
	movq	%rdi, %r15
	leaq	L_.str(%rip), %rdi
	xorl	%eax, %eax
	callq	_printf
	movq	___stdinp@GOTPCREL(%rip), %r12
	movq	(%r12), %rdx
	movl	$50, %esi
	movq	%r14, %rdi
	callq	_fgets
	testq	%rax, %rax
	je	LBB0_6
## BB#1:
	leaq	L_.str2(%rip), %r13
	.align	4, 0x90
LBB0_3:                                 ## %.lr.ph
                                        ## =>This Inner Loop Header: Depth=1
	movl	52(%r14), %r8d
	xorl	%eax, %eax
	movq	%r15, %rdi
	leaq	L_.str1(%rip), %rsi
	movl	%ebx, %edx
	movq	%r14, %rcx
	callq	_fprintf
	testl	%eax, %eax
	je	LBB0_6
## BB#4:                                ##   in Loop: Header=BB0_3 Depth=1
	xorl	%eax, %eax
	movq	%r15, %rdi
	movq	%r13, %rsi
	callq	_fprintf
	testl	%eax, %eax
	je	LBB0_6
## BB#5:                                ##   in Loop: Header=BB0_3 Depth=1
	cmpl	$2147483647, %ebx       ## imm = 0x7FFFFFFF
	je	LBB0_6
## BB#2:                                ## %tailrecurse
                                        ##   in Loop: Header=BB0_3 Depth=1
	incl	%ebx
	xorl	%eax, %eax
	leaq	L_.str(%rip), %rdi
	callq	_printf
	movq	(%r12), %rdx
	movl	$50, %esi
	movq	%r14, %rdi
	callq	_fgets
	testq	%rax, %rax
	jne	LBB0_3
LBB0_6:                                 ## %split
	addq	$8, %rsp
	popq	%rbx
	popq	%r12
	popq	%r13
	popq	%r14
	popq	%r15
	popq	%rbp
	retq
	.cfi_endproc

	.globl	_main
	.align	4, 0x90
_main:                                  ## @main
	.cfi_startproc
## BB#0:
	pushq	%rbp
Ltmp14:
	.cfi_def_cfa_offset 16
Ltmp15:
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
Ltmp16:
	.cfi_def_cfa_register %rbp
	pushq	%r14
	pushq	%rbx
	subq	$64, %rsp
Ltmp17:
	.cfi_offset %rbx, -32
Ltmp18:
	.cfi_offset %r14, -24
	movq	___stack_chk_guard@GOTPCREL(%rip), %r14
	movq	(%r14), %rax
	movq	%rax, -24(%rbp)
	movl	$20, -28(%rbp)
	leaq	L_.str3(%rip), %rdi
	leaq	L_.str4(%rip), %rsi
	callq	_fopen
	movq	%rax, %rbx
	testq	%rbx, %rbx
	je	LBB1_1
## BB#2:
	leaq	-80(%rbp), %rdx
	movl	$1, %esi
	movq	%rbx, %rdi
	callq	_doScore
	movq	%rbx, %rdi
	callq	_fclose
	xorl	%eax, %eax
	jmp	LBB1_3
LBB1_1:
	movq	___stderrp@GOTPCREL(%rip), %rax
	movq	(%rax), %rcx
	leaq	L_.str5(%rip), %rdi
	movl	$60, %esi
	movl	$1, %edx
	callq	_fwrite
	movl	$-1, %eax
LBB1_3:
	movq	(%r14), %rcx
	cmpq	-24(%rbp), %rcx
	jne	LBB1_5
## BB#4:
	addq	$64, %rsp
	popq	%rbx
	popq	%r14
	popq	%rbp
	retq
LBB1_5:
	callq	___stack_chk_fail
	.cfi_endproc

	.section	__TEXT,__cstring,cstring_literals
L_.str:                                 ## @.str
	.asciz	"Enter you[sic] name: "

L_.str1:                                ## @.str1
	.asciz	"%d) Name:%s Score:%d\n"

L_.str2:                                ## @.str2
	.asciz	"_________________\n\n"

L_.str3:                                ## @.str3
	.asciz	"result.txt"

L_.str4:                                ## @.str4
	.asciz	"a+"

L_.str5:                                ## @.str5
	.asciz	"Don't lar try to write to stuff you have no permission for.\n"


.subsections_via_symbols