#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 printbuff(char *buff, int size) {
  int i;
  printf("[");
  for (i = 0; i < size; i++) {
    printf("%u", buff[i]);
    if (i < (size - 1))
      printf(",");
  }
  printf("]");
  printf("\n");
}


x86 assembly (clang, -O0):
<printbuff>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    118c <printbuff+0x7c>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
mov    -0xc(%rbp),%ecx
sub    $0x1,%ecx
cmp    %ecx,%eax
jge    1179 <printbuff+0x69>
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    117e <printbuff+0x6e>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <printbuff+0x24>
lea    0xe74(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe68(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printbuff>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %esi,%r14d
mov    %rdi,%r15
mov    $0x5b,%edi
call   1030 <putchar@plt>
test   %r14d,%r14d
jle    1179 <printbuff+0x59>
lea    -0x1(%r14),%r12d
mov    %r14d,%r13d
lea    0xeb4(%rip),%r14
xor    %ebx,%ebx
jmp    1159 <printbuff+0x39>
add    $0x1,%rbx
cmp    %rbx,%r13
je     1179 <printbuff+0x59>
movsbl (%r15,%rbx,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
cmp    %r12,%rbx
jae    1150 <printbuff+0x30>
mov    $0x2c,%edi
call   1030 <putchar@plt>
jmp    1150 <printbuff+0x30>
mov    $0x5d,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

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

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%u\00"
define void @printbuff(i8* nocapture %0, i32 %1) {
%3 = tail call i32 @putchar(i32 91)
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %21
5: ; preds = %2
%6 = add nsw i32 %1, -1
%7 = zext i32 %6 to i64
%8 = zext i32 %1 to i64
br label %9
9: ; preds = %5, %18
%10 = phi i64 [ 0, %5 ], [ %19, %18 ]
%11 = getelementptr inbounds i8, i8* %0, i64 %10
%12 = load i8, i8* %11
%13 = sext i8 %12 to i32
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %13)
%15 = icmp ult i64 %10, %7
br i1 %15, label %16, label %18
16: ; preds = %9
%17 = tail call i32 @putchar(i32 44)
br label %18
18: ; preds = %9, %16
%19 = add nuw nsw i64 %10, 1
%20 = icmp eq i64 %19, %8
br i1 %20, label %21, label %9
21: ; preds = %18, %2
%22 = tail call i32 @putchar(i32 93)
%23 = tail call i32 @putchar(i32 10)
ret void
}