#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 *, ...);
void display_thirdparty_buffer(const unsigned tpbuf[]) {
  printf("Third party buffer: ");
  for (int i = 0; i < 40; i++) {
    printf("%u", tpbuf[i]);
  }
  printf("\n");
}


x86 assembly (clang, -O0):
<display_thirdparty_buffer>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xedd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0xc(%rbp)
cmpl   $0x28,-0xc(%rbp)
jge    1162 <display_thirdparty_buffer+0x52>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xec8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1131 <display_thirdparty_buffer+0x21>
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<display_thirdparty_buffer>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r15
lea    0xed1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed8(%rip),%r14
xor    %ebx,%ebx
nop
mov    (%r15,%rbx,4),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    $0x28,%rbx
jne    1140 <display_thirdparty_buffer+0x20>
mov    $0xa,%edi
pop    %rbx
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [21 x i8] c"Third party buffer: \00"
@.str.1 = [3 x i8] c"%u\00"
@.str.2 = [2 x i8] c"\0A\00"
define void @display_thirdparty_buffer(i32* %0) {
%2 = alloca i32*
%3 = alloca i32
store i32* %0, i32** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %3
br label %5
5: ; preds = %15, %1
%6 = load i32, i32* %3
%7 = icmp slt i32 %6, 40
br i1 %7, label %8, label %18
8: ; preds = %5
%9 = load i32*, i32** %2
%10 = load i32, i32* %3
%11 = sext i32 %10 to i64
%12 = getelementptr inbounds i32, i32* %9, i64 %11
%13 = load i32, i32* %12
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %13)
br label %15
15: ; preds = %8
%16 = load i32, i32* %3
%17 = add nsw i32 %16, 1
store i32 %17, i32* %3
br label %5
18: ; preds = %5
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [21 x i8] c"Third party buffer: \00"
@.str.1 = [3 x i8] c"%u\00"
define void @display_thirdparty_buffer(i32* nocapture %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
br label %5
3: ; preds = %5
%4 = tail call i32 @putchar(i32 10)
ret void
5: ; preds = %1, %5
%6 = phi i64 [ 0, %1 ], [ %10, %5 ]
%7 = getelementptr inbounds i32, i32* %0, i64 %6
%8 = load i32, i32* %7
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %8)
%10 = add nuw nsw i64 %6, 1
%11 = icmp eq i64 %10, 40
br i1 %11, label %3, label %5
}