#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 dump_hex(const char *ptr, int length) {
  int i = 0;
  printf("DUMP: ");
  while (i < length) {
    printf("%c", (ptr[i] >= 0x20 ? ptr[i] : '.'));
    i++;
  }
  printf("\n");
  i = 0;
  while (i < length) {
    printf("%X ", ptr[i]);
    i++;
  }
  printf("\n\n");
}


x86 assembly (clang, -O0):
<dump_hex>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
lea    0xed3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1195 <dump_hex+0x85>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x20,%eax
jl     1169 <dump_hex+0x59>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
mov    %eax,-0x14(%rbp)
jmp    1176 <dump_hex+0x66>
mov    $0x2e,%eax
mov    %eax,-0x14(%rbp)
jmp    1176 <dump_hex+0x66>
mov    -0x14(%rbp),%esi
lea    0xe87(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <dump_hex+0x24>
lea    0xe73(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11de <dump_hex+0xce>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xe41(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    11aa <dump_hex+0x9a>
lea    0xe29(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dump_hex>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    %esi,%r14d
mov    %rdi,%r15
lea    0xebb(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
test   %r14d,%r14d
jle    11ba <dump_hex+0x8a>
mov    %r14d,%ebp
xor    %ebx,%ebx
mov    $0x2e,%r12d
nopl   0x0(%rax)
movzbl (%r15,%rbx,1),%eax
cmp    $0x20,%al
cmovl  %r12d,%eax
movzbl %al,%edi
call   1030 <putchar@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1160 <dump_hex+0x30>
mov    $0xa,%edi
call   1030 <putchar@plt>
test   %r14d,%r14d
jle    11c4 <dump_hex+0x94>
lea    0xe75(%rip),%r14
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
movsbl (%r15,%rbx,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    11a0 <dump_hex+0x70>
jmp    11c4 <dump_hex+0x94>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xe40(%rip),%rdi
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
jmp    1040 <puts@plt>

LLVM IR (-O0):
@.str = [7 x i8] c"DUMP: \00"
@.str.1 = [3 x i8] c"%c\00"
@.str.2 = [2 x i8] c"\0A\00"
@.str.3 = [4 x i8] c"%X \00"
@.str.4 = [3 x i8] c"\0A\0A\00"
define void @dump_hex(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
store i32 0, i32* %5
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
br label %7
7: ; preds = %27, %2
%8 = load i32, i32* %5
%9 = load i32, i32* %4
%10 = icmp slt i32 %8, %9
br i1 %10, label %11, label %32
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 = icmp sge i32 %17, 32
br i1 %18, label %19, label %26
19: ; preds = %11
%20 = load i8*, i8** %3
%21 = load i32, i32* %5
%22 = sext i32 %21 to i64
%23 = getelementptr inbounds i8, i8* %20, i64 %22
%24 = load i8, i8* %23
%25 = sext i8 %24 to i32
br label %27
26: ; preds = %11
br label %27
27: ; preds = %26, %19
%28 = phi i32 [ %25, %19 ], [ 46, %26 ]
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %28)
%30 = load i32, i32* %5
%31 = add nsw i32 %30, 1
store i32 %31, i32* %5
br label %7
32: ; preds = %7
%33 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %5
br label %34
34: ; preds = %38, %32
%35 = load i32, i32* %5
%36 = load i32, i32* %4
%37 = icmp slt i32 %35, %36
br i1 %37, label %38, label %48
38: ; preds = %34
%39 = load i8*, i8** %3
%40 = load i32, i32* %5
%41 = sext i32 %40 to i64
%42 = getelementptr inbounds i8, i8* %39, i64 %41
%43 = load i8, i8* %42
%44 = sext i8 %43 to i32
%45 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %44)
%46 = load i32, i32* %5
%47 = add nsw i32 %46, 1
store i32 %47, i32* %5
br label %34
48: ; preds = %34
%49 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [7 x i8] c"DUMP: \00"
@.str.3 = [4 x i8] c"%X \00"
@str = [2 x i8] c"\0A\00"
define void @dump_hex(i8* nocapture %0, i32 %1) {
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%4 = icmp sgt i32 %1, 0
br i1 %4, label %7, label %5
5: ; preds = %2
%6 = tail call i32 @putchar(i32 10)
br label %31
7: ; preds = %2
%8 = zext i32 %1 to i64
br label %9
9: ; preds = %7, %9
%10 = phi i64 [ 0, %7 ], [ %17, %9 ]
%11 = getelementptr inbounds i8, i8* %0, i64 %10
%12 = load i8, i8* %11
%13 = icmp sgt i8 %12, 31
%14 = select i1 %13, i8 %12, i8 46
%15 = zext i8 %14 to i32
%16 = tail call i32 @putchar(i32 %15)
%17 = add nuw nsw i64 %10, 1
%18 = icmp eq i64 %17, %8
br i1 %18, label %19, label %9
19: ; preds = %9
%20 = tail call i32 @putchar(i32 10)
br i1 %4, label %21, label %31
21: ; preds = %19
%22 = zext i32 %1 to i64
br label %23
23: ; preds = %21, %23
%24 = phi i64 [ 0, %21 ], [ %29, %23 ]
%25 = getelementptr inbounds i8, i8* %0, i64 %24
%26 = load i8, i8* %25
%27 = sext i8 %26 to i32
%28 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %27)
%29 = add nuw nsw i64 %24, 1
%30 = icmp eq i64 %29, %22
br i1 %30, label %31, label %23
31: ; preds = %23, %5, %19
%32 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
ret void
}