#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 /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ scanf(char *, char *);
int strlen(char *);
char toupper(char);
int main(int argc, char *argv[]) {
  char text[1024];
  scanf("%s", &text[0]);
  int i;
  for (i = 0; i < strlen(text); i++) {
    text[i] = toupper(text[i]);
  }
  printf("%s\n", text);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x420,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    -0x410(%rbp),%rsi
lea    0xe99(%rip),%rdi
call   1060 <scanf@plt>
movl   $0x0,-0x414(%rbp)
mov    -0x414(%rbp),%eax
mov    %eax,-0x418(%rbp)
lea    -0x410(%rbp),%rdi
call   1040 <strlen@plt>
mov    %eax,%ecx
mov    -0x418(%rbp),%eax
cmp    %ecx,%eax
jge    11d6 <main+0x96>
movslq -0x414(%rbp),%rax
movsbl -0x410(%rbp,%rax,1),%edi
ff
call   1030 <toupper@plt>
mov    %al,%cl
movslq -0x414(%rbp),%rax
mov    %cl,-0x410(%rbp,%rax,1)
mov    -0x414(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x414(%rbp)
jmp    1176 <main+0x36>
lea    -0x410(%rbp),%rsi
lea    0xe1f(%rip),%rdi
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x420,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x408,%rsp
lea    0xeaf(%rip),%rdi
mov    %rsp,%rbx
mov    %rbx,%rsi
call   1060 <scanf@plt>
mov    %rbx,%rdi
call   1040 <strlen@plt>
test   %eax,%eax
jle    118f <main+0x4f>
xor    %ebx,%ebx
mov    %rsp,%r14
nopl   (%rax)
movsbl (%rsp,%rbx,1),%edi
call   1030 <toupper@plt>
mov    %al,(%rsp,%rbx,1)
add    $0x1,%rbx
mov    %r14,%rdi
call   1040 <strlen@plt>
cltq
cmp    %rax,%rbx
jl     1170 <main+0x30>
lea    0xe6d(%rip),%rdi
mov    %rsp,%rsi
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x408,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca [1024 x i8]
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = getelementptr inbounds [1024 x i8], [1024 x i8]* %6, i64 0, i64 0
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %8)
store i32 0, i32* %7
br label %10
10: ; preds = %24, %2
%11 = load i32, i32* %7
%12 = getelementptr inbounds [1024 x i8], [1024 x i8]* %6, i64 0, i64 0
%13 = call i32 @strlen(i8* %12)
%14 = icmp slt i32 %11, %13
br i1 %14, label %15, label %27
15: ; preds = %10
%16 = load i32, i32* %7
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds [1024 x i8], [1024 x i8]* %6, i64 0, i64 %17
%19 = load i8, i8* %18
%20 = call signext i8 @toupper(i8 signext %19)
%21 = load i32, i32* %7
%22 = sext i32 %21 to i64
%23 = getelementptr inbounds [1024 x i8], [1024 x i8]* %6, i64 0, i64 %22
store i8 %20, i8* %23
br label %24
24: ; preds = %15
%25 = load i32, i32* %7
%26 = add nsw i32 %25, 1
store i32 %26, i32* %7
br label %10
27: ; preds = %10
%28 = getelementptr inbounds [1024 x i8], [1024 x i8]* %6, i64 0, i64 0
%29 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %28)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca [1024 x i8]
%4 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = call i32 @strlen(i8* %4)
%7 = icmp sgt i32 %6, 0
br i1 %7, label %8, label %17
8: ; preds = %2, %8
%9 = phi i64 [ %13, %8 ], [ 0, %2 ]
%10 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 %9
%11 = load i8, i8* %10
%12 = call signext i8 @toupper(i8 signext %11)
store i8 %12, i8* %10
%13 = add nuw nsw i64 %9, 1
%14 = call i32 @strlen(i8* %4)
%15 = sext i32 %14 to i64
%16 = icmp slt i64 %13, %15
br i1 %16, label %8, label %17
17: ; preds = %8, %2
%18 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %4)
ret i32 0
}