#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int EOF;
int getchar();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ putchar(int);
int main() {
  int c;
  while ((c = getchar()) != EOF) {
    printf("printf: c = [%c]\n", c);
    printf("putchar: c = [");
    putchar(c);
    printf("]\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x0,%al
call   1050 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2e98(%rip),%rcx
cmp    (%rcx),%eax
je     1192 <main+0x62>
mov    -0x8(%rbp),%esi
lea    0xe9e(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xea2(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
lea    0xe89(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
jmp    113f <main+0xf>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
xor    %eax,%eax
call   1060 <getchar@plt>
mov    0x2e92(%rip),%r12
cmp    (%r12),%eax
je     11b4 <main+0x74>
mov    %eax,%ebp
lea    0xe9b(%rip),%r14
lea    0xea6(%rip),%r15
lea    0xeae(%rip),%rbx
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    %r14,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    %r15,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    %ebp,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1040 <puts@plt>
xor    %eax,%eax
call   1060 <getchar@plt>
mov    %eax,%ebp
cmp    (%r12),%eax
jne    1180 <main+0x40>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@EOF = global i32 0
@.str = [18 x i8] c"printf: c = [%c]\0A\00"
@.str.1 = [15 x i8] c"putchar: c = [\00"
@.str.2 = [3 x i8] c"]\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
br label %3
3: ; preds = %7, %0
%4 = call i32 (...) @getchar()
store i32 %4, i32* %2
%5 = load i32, i32* @EOF
%6 = icmp ne i32 %4, %5
br i1 %6, label %7, label %14
7: ; preds = %3
%8 = load i32, i32* %2
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0))
%11 = load i32, i32* %2
%12 = call i32 @putchar(i32 %11)
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %3
14: ; preds = %3
ret i32 0
}

LLVM IR (-O2):
@EOF = global i32 0
@.str = [18 x i8] c"printf: c = [%c]\0A\00"
@.str.1 = [15 x i8] c"putchar: c = [\00"
@str = [2 x i8] c"]\00"
define i32 @main() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %13, label %4
4: ; preds = %0, %4
%5 = phi i32 [ %10, %4 ], [ %1, %0 ]
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0))
%8 = tail call i32 @putchar(i32 %5)
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
%10 = tail call i32 (...) @getchar()
%11 = load i32, i32* @EOF
%12 = icmp eq i32 %10, %11
br i1 %12, label %13, label %4
13: ; preds = %4, %0
ret i32 0
}