#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 */
struct addrinfo {
  struct addrinfo *ai_canonname;
  struct addrinfo *ai_next;
};

/* Variables and functions */
int /*<<< orphan*/ free(struct addrinfo *);
void freeaddrinfo(struct addrinfo *res) {
  while (res != NULL) {
    struct addrinfo *p = res;
    res = res->ai_next;
    free(p->ai_canonname);
    free(p);
  }
}


x86 assembly (clang, -O0):
<freeaddrinfo>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
cmpq   $0x0,-0x8(%rbp)
je     1155 <freeaddrinfo+0x45>
mov    -0x8(%rbp),%rax
mov    %rax,-0x10(%rbp)
mov    -0x8(%rbp),%rax
mov    0x8(%rax),%rax
mov    %rax,-0x8(%rbp)
mov    -0x10(%rbp),%rax
mov    (%rax),%rdi
call   1030 <free@plt>
mov    -0x10(%rbp),%rdi
call   1030 <free@plt>
jmp    111c <freeaddrinfo+0xc>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<freeaddrinfo>:
push   %r14
push   %rbx
push   %rax
test   %rdi,%rdi
je     113c <freeaddrinfo+0x2c>
mov    %rdi,%rbx
nopl   0x0(%rax)
mov    (%rbx),%rdi
mov    0x8(%rbx),%r14
call   1030 <free@plt>
mov    %rbx,%rdi
call   1030 <free@plt>
mov    %r14,%rbx
test   %r14,%r14
jne    1120 <freeaddrinfo+0x10>
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
%struct.addrinfo = type { %struct.addrinfo*, %struct.addrinfo* }
define void @freeaddrinfo(%struct.addrinfo* %0) {
%2 = alloca %struct.addrinfo*
%3 = alloca %struct.addrinfo*
store %struct.addrinfo* %0, %struct.addrinfo** %2
br label %4
4: ; preds = %7, %1
%5 = load %struct.addrinfo*, %struct.addrinfo** %2
%6 = icmp ne %struct.addrinfo* %5, null
br i1 %6, label %7, label %18
7: ; preds = %4
%8 = load %struct.addrinfo*, %struct.addrinfo** %2
store %struct.addrinfo* %8, %struct.addrinfo** %3
%9 = load %struct.addrinfo*, %struct.addrinfo** %2
%10 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %9, i32 0, i32 1
%11 = load %struct.addrinfo*, %struct.addrinfo** %10
store %struct.addrinfo* %11, %struct.addrinfo** %2
%12 = load %struct.addrinfo*, %struct.addrinfo** %3
%13 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %12, i32 0, i32 0
%14 = load %struct.addrinfo*, %struct.addrinfo** %13
%15 = call i32 @free(%struct.addrinfo* %14)
%16 = load %struct.addrinfo*, %struct.addrinfo** %3
%17 = call i32 @free(%struct.addrinfo* %16)
br label %4
18: ; preds = %4
ret void
}

LLVM IR (-O2):
%struct.addrinfo = type { %struct.addrinfo*, %struct.addrinfo* }
define void @freeaddrinfo(%struct.addrinfo* %0) {
%2 = icmp eq %struct.addrinfo* %0, null
br i1 %2, label %12, label %3
3: ; preds = %1, %3
%4 = phi %struct.addrinfo* [ %6, %3 ], [ %0, %1 ]
%5 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %4, i64 0, i32 1
%6 = load %struct.addrinfo*, %struct.addrinfo** %5
%7 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %4, i64 0, i32 0
%8 = load %struct.addrinfo*, %struct.addrinfo** %7
%9 = tail call i32 @free(%struct.addrinfo* %8)
%10 = tail call i32 @free(%struct.addrinfo* %4)
%11 = icmp eq %struct.addrinfo* %6, null
br i1 %11, label %12, label %3
12: ; preds = %3, %1
ret void
}