#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*/ free(char *);
char *malloc(scalar_t__);
scalar_t__ strlen(char *);
char toupper(char);
char *ToUpper(char *strIn) {
  char *strOut;
  int iCur;
  strOut = malloc(strlen(strIn) + 1);
  for (iCur = 0; strIn[iCur] != '\0'; iCur++) {
    strOut[iCur] = toupper(strIn[iCur]);
  }
  strOut[iCur] = '\0';
  free(strIn);
  return strOut;
}


x86 assembly (clang, -O0):
<ToUpper>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
call   1050 <strlen@plt>
mov    %rax,%rdi
add    $0x1,%rdi
call   1060 <malloc@plt>
mov    %rax,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x8(%rbp),%rax
movslq -0x14(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x0,%eax
je     11ad <ToUpper+0x6d>
mov    -0x8(%rbp),%rax
movslq -0x14(%rbp),%rcx
movsbl (%rax,%rcx,1),%edi
call   1040 <toupper@plt>
mov    %al,%dl
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    %dl,(%rax,%rcx,1)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    116c <ToUpper+0x2c>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
mov    -0x8(%rbp),%rdi
call   1030 <free@plt>
mov    -0x10(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<ToUpper>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r14
call   1050 <strlen@plt>
lea    0x1(%rax),%rdi
call   1060 <malloc@plt>
mov    %rax,%r15
mov    (%r14),%al
test   %al,%al
je     118e <ToUpper+0x4e>
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
movsbl %al,%edi
call   1040 <toupper@plt>
mov    %al,(%r15,%rbx,1)
movzbl 0x1(%r14,%rbx,1),%eax
add    $0x1,%rbx
test   %al,%al
jne    1170 <ToUpper+0x30>
mov    %ebx,%eax
jmp    1190 <ToUpper+0x50>
xor    %eax,%eax
movb   $0x0,(%r15,%rax,1)
mov    %r14,%rdi
call   1030 <free@plt>
mov    %r15,%rax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define i8* @ToUpper(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
%4 = alloca i32
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i64 @strlen(i8* %5)
%7 = add nsw i64 %6, 1
%8 = call i8* @malloc(i64 %7)
store i8* %8, i8** %3
store i32 0, i32* %4
br label %9
9: ; preds = %28, %1
%10 = load i8*, i8** %2
%11 = load i32, i32* %4
%12 = sext i32 %11 to i64
%13 = getelementptr inbounds i8, i8* %10, i64 %12
%14 = load i8, i8* %13
%15 = sext i8 %14 to i32
%16 = icmp ne i32 %15, 0
br i1 %16, label %17, label %31
17: ; preds = %9
%18 = load i8*, i8** %2
%19 = load i32, i32* %4
%20 = sext i32 %19 to i64
%21 = getelementptr inbounds i8, i8* %18, i64 %20
%22 = load i8, i8* %21
%23 = call signext i8 @toupper(i8 signext %22)
%24 = load i8*, i8** %3
%25 = load i32, i32* %4
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds i8, i8* %24, i64 %26
store i8 %23, i8* %27
br label %28
28: ; preds = %17
%29 = load i32, i32* %4
%30 = add nsw i32 %29, 1
store i32 %30, i32* %4
br label %9
31: ; preds = %9
%32 = load i8*, i8** %3
%33 = load i32, i32* %4
%34 = sext i32 %33 to i64
%35 = getelementptr inbounds i8, i8* %32, i64 %34
store i8 0, i8* %35
%36 = load i8*, i8** %2
%37 = call i32 @free(i8* %36)
%38 = load i8*, i8** %3
ret i8* %38
}

LLVM IR (-O2):
define noalias i8* @ToUpper(i8* nocapture %0) {
%2 = tail call i64 @strlen(i8* dereferenceable(1) %0)
%3 = add nsw i64 %2, 1
%4 = tail call i8* @malloc(i64 %3)
%5 = load i8, i8* %0
%6 = icmp eq i8 %5, 0
br i1 %6, label %18, label %7
7: ; preds = %1, %7
%8 = phi i64 [ %12, %7 ], [ 0, %1 ]
%9 = phi i8 [ %14, %7 ], [ %5, %1 ]
%10 = tail call signext i8 @toupper(i8 signext %9)
%11 = getelementptr inbounds i8, i8* %4, i64 %8
store i8 %10, i8* %11
%12 = add nuw i64 %8, 1
%13 = getelementptr inbounds i8, i8* %0, i64 %12
%14 = load i8, i8* %13
%15 = icmp eq i8 %14, 0
br i1 %15, label %16, label %7
16: ; preds = %7
%17 = and i64 %12, 4294967295
br label %18
18: ; preds = %16, %1
%19 = phi i64 [ 0, %1 ], [ %17, %16 ]
%20 = getelementptr inbounds i8, i8* %4, i64 %19
store i8 0, i8* %20
%21 = tail call i32 @free(i8* %0)
ret i8* %4
}