#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 *, ...);
int callback(void *para, int f_num, char **f_value, char **f_name) {
  int i;
  printf("******************************\n");
  for (i = 0; i < f_num; i++) {
    printf("%s:%s\n", f_name[i], f_value[i]);
  }
  return 0;
}


x86 assembly (clang, -O0):
<callback>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %rdx,-0x18(%rbp)
mov    %rcx,-0x20(%rbp)
lea    0xed2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x24(%rbp)
mov    -0x24(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    117c <callback+0x6c>
mov    -0x20(%rbp),%rax
movslq -0x24(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
mov    -0x18(%rbp),%rax
movslq -0x24(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xeb9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x24(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x24(%rbp)
jmp    113c <callback+0x2c>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<callback>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    %rcx,%r14
mov    %rdx,%r12
mov    %esi,%ebp
lea    0xed0(%rip),%rdi
call   1030 <puts@plt>
test   %ebp,%ebp
jle    116b <callback+0x4b>
mov    %ebp,%ebp
lea    0xeb7(%rip),%r15
xor    %ebx,%ebx
nopl   0x0(%rax,%rax,1)
mov    (%r14,%rbx,8),%rsi
mov    (%r12,%rbx,8),%rdx
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1150 <callback+0x30>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [32 x i8] c"******************************\0A\00"
@.str.1 = [7 x i8] c"%s:%s\0A\00"
define i32 @callback(i8* %0, i32 %1, i8** %2, i8** %3) {
%5 = alloca i8*
%6 = alloca i32
%7 = alloca i8**
%8 = alloca i8**
%9 = alloca i32
store i8* %0, i8** %5
store i32 %1, i32* %6
store i8** %2, i8*** %7
store i8** %3, i8*** %8
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %9
br label %11
11: ; preds = %27, %4
%12 = load i32, i32* %9
%13 = load i32, i32* %6
%14 = icmp slt i32 %12, %13
br i1 %14, label %15, label %30
15: ; preds = %11
%16 = load i8**, i8*** %8
%17 = load i32, i32* %9
%18 = sext i32 %17 to i64
%19 = getelementptr inbounds i8*, i8** %16, i64 %18
%20 = load i8*, i8** %19
%21 = load i8**, i8*** %7
%22 = load i32, i32* %9
%23 = sext i32 %22 to i64
%24 = getelementptr inbounds i8*, i8** %21, i64 %23
%25 = load i8*, i8** %24
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i8* %20, i8* %25)
br label %27
27: ; preds = %15
%28 = load i32, i32* %9
%29 = add nsw i32 %28, 1
store i32 %29, i32* %9
br label %11
30: ; preds = %11
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [7 x i8] c"%s:%s\0A\00"
@str = [31 x i8] c"******************************\00"
define i32 @callback(i8* nocapture readnone %0, i32 %1, i8** nocapture %2, i8** nocapture %3) {
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @str, i64 0, i64 0))
%6 = icmp sgt i32 %1, 0
br i1 %6, label %7, label %18
7: ; preds = %4
%8 = zext i32 %1 to i64
br label %9
9: ; preds = %7, %9
%10 = phi i64 [ 0, %7 ], [ %16, %9 ]
%11 = getelementptr inbounds i8*, i8** %3, i64 %10
%12 = load i8*, i8** %11
%13 = getelementptr inbounds i8*, i8** %2, i64 %10
%14 = load i8*, i8** %13
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i8* %12, i8* %14)
%16 = add nuw nsw i64 %10, 1
%17 = icmp eq i64 %16, %8
br i1 %17, label %18, label %9
18: ; preds = %9, %4
ret i32 0
}