#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 */
scalar_t__ isdigit(int);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  int c;
  for (c = 0; c < 128; c++) {
    printf("%c is %sdigit\n", c, isdigit(c) ? "    " : "not ");
    printf("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0x80,-0x8(%rbp)
jge    1197 <main+0x77>
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%edi
call   1030 <isdigit@plt>
mov    -0xc(%rbp),%esi
mov    %rax,%rcx
lea    0xeb6(%rip),%rdx
lea    0xeaa(%rip),%rax
cmp    $0x0,%rcx
cmovne %rax,%rdx
lea    0xe8c(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe8b(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1136 <main+0x16>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
lea    0xed6(%rip),%r14
lea    0xeca(%rip),%r15
lea    0xeb4(%rip),%rbx
xor    %ebp,%ebp
xchg   %ax,%ax
mov    %ebp,%edi
call   1040 <isdigit@plt>
test   %rax,%rax
mov    %r15,%rdx
cmove  %r14,%rdx
mov    %rbx,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%ebp
cmp    $0x80,%ebp
jne    1150 <main+0x20>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [15 x i8] c"%c is %sdigit\0A\00"
@.str.1 = [5 x i8] c" \00"
@.str.2 = [5 x i8] c"not \00"
@.str.3 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
br label %3
3: ; preds = %15, %0
%4 = load i32, i32* %2
%5 = icmp slt i32 %4, 128
br i1 %5, label %6, label %18
6: ; preds = %3
%7 = load i32, i32* %2
%8 = load i32, i32* %2
%9 = call i64 @isdigit(i32 %8)
%10 = icmp ne i64 %9, 0
%11 = zext i1 %10 to i64
%12 = select i1 %10, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0)
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i32 %7, i8* %12)
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %15
15: ; preds = %6
%16 = load i32, i32* %2
%17 = add nsw i32 %16, 1
store i32 %17, i32* %2
br label %3
18: ; preds = %3
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"%c is %sdigit\0A\00"
@.str.1 = [5 x i8] c" \00"
@.str.2 = [5 x i8] c"not \00"
define i32 @main() {
br label %1
1: ; preds = %0, %1
%2 = phi i32 [ 0, %0 ], [ %8, %1 ]
%3 = tail call i64 @isdigit(i32 %2)
%4 = icmp eq i64 %3, 0
%5 = select i1 %4, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i32 %2, i8* %5)
%7 = tail call i32 @putchar(i32 10)
%8 = add nuw nsw i32 %2, 1
%9 = icmp eq i32 %8, 128
br i1 %9, label %10, label %1
10: ; preds = %1
ret i32 0
}