#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 timeval {
  scalar_t__ tv_sec;
  scalar_t__ tv_usec;
};

/* Variables and functions */
int timeval_compare(struct timeval *tv1, struct timeval *tv2) {
  if (tv1->tv_sec == tv2->tv_sec) {
    if (tv1->tv_usec > tv2->tv_usec) {
      return -1;
    } else {
      return tv1->tv_usec == tv2->tv_usec ? 0 : 1;
    }
  } else {
    return tv1->tv_sec > tv2->tv_sec ? -1 : 1;
  }
}


x86 assembly (clang, -O0):
<timeval_compare>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    (%rax),%rax
mov    -0x18(%rbp),%rcx
cmp    (%rcx),%rax
jne    1167 <timeval_compare+0x67>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rax
mov    -0x18(%rbp),%rcx
cmp    0x8(%rcx),%rax
jle    1142 <timeval_compare+0x42>
movl   $0xffffffff,-0x4(%rbp)
jmp    1188 <timeval_compare+0x88>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdx
mov    -0x18(%rbp),%rax
mov    0x8(%rax),%rsi
mov    $0x1,%eax
xor    %ecx,%ecx
cmp    %rsi,%rdx
cmove  %ecx,%eax
mov    %eax,-0x4(%rbp)
jmp    1188 <timeval_compare+0x88>
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
mov    -0x18(%rbp),%rax
mov    (%rax),%rsi
mov    $0x1,%eax
mov    $0xffffffff,%ecx
cmp    %rsi,%rdx
cmovg  %ecx,%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<timeval_compare>:
mov    (%rsi),%rax
cmp    %rax,(%rdi)
jne    111e <timeval_compare+0x1e>
mov    0x8(%rsi),%rcx
mov    $0xffffffff,%eax
cmp    %rcx,0x8(%rdi)
jg     1129 <timeval_compare+0x29>
setne  %al
movzbl %al,%eax
ret
setle  %al
movzbl %al,%eax
add    %eax,%eax
add    $0xffffffff,%eax
ret

LLVM IR (-O0):
%struct.timeval = type { i64, i64 }
define i32 @timeval_compare(%struct.timeval* %0, %struct.timeval* %1) {
%3 = alloca i32
%4 = alloca %struct.timeval*
%5 = alloca %struct.timeval*
store %struct.timeval* %0, %struct.timeval** %4
store %struct.timeval* %1, %struct.timeval** %5
%6 = load %struct.timeval*, %struct.timeval** %4
%7 = getelementptr inbounds %struct.timeval, %struct.timeval* %6, i32 0, i32 0
%8 = load i64, i64* %7
%9 = load %struct.timeval*, %struct.timeval** %5
%10 = getelementptr inbounds %struct.timeval, %struct.timeval* %9, i32 0, i32 0
%11 = load i64, i64* %10
%12 = icmp eq i64 %8, %11
br i1 %12, label %13, label %32
13: ; preds = %2
%14 = load %struct.timeval*, %struct.timeval** %4
%15 = getelementptr inbounds %struct.timeval, %struct.timeval* %14, i32 0, i32 1
%16 = load i64, i64* %15
%17 = load %struct.timeval*, %struct.timeval** %5
%18 = getelementptr inbounds %struct.timeval, %struct.timeval* %17, i32 0, i32 1
%19 = load i64, i64* %18
%20 = icmp sgt i64 %16, %19
br i1 %20, label %21, label %22
21: ; preds = %13
store i32 -1, i32* %3
br label %42
22: ; preds = %13
%23 = load %struct.timeval*, %struct.timeval** %4
%24 = getelementptr inbounds %struct.timeval, %struct.timeval* %23, i32 0, i32 1
%25 = load i64, i64* %24
%26 = load %struct.timeval*, %struct.timeval** %5
%27 = getelementptr inbounds %struct.timeval, %struct.timeval* %26, i32 0, i32 1
%28 = load i64, i64* %27
%29 = icmp eq i64 %25, %28
%30 = zext i1 %29 to i64
%31 = select i1 %29, i32 0, i32 1
store i32 %31, i32* %3
br label %42
32: ; preds = %2
%33 = load %struct.timeval*, %struct.timeval** %4
%34 = getelementptr inbounds %struct.timeval, %struct.timeval* %33, i32 0, i32 0
%35 = load i64, i64* %34
%36 = load %struct.timeval*, %struct.timeval** %5
%37 = getelementptr inbounds %struct.timeval, %struct.timeval* %36, i32 0, i32 0
%38 = load i64, i64* %37
%39 = icmp sgt i64 %35, %38
%40 = zext i1 %39 to i64
%41 = select i1 %39, i32 -1, i32 1
store i32 %41, i32* %3
br label %42
42: ; preds = %32, %22, %21
%43 = load i32, i32* %3
ret i32 %43
}

LLVM IR (-O2):
%struct.timeval = type { i64, i64 }
define i32 @timeval_compare(%struct.timeval* nocapture %0, %struct.timeval* nocapture %1) {
%3 = getelementptr inbounds %struct.timeval, %struct.timeval* %0, i64 0, i32 0
%4 = load i64, i64* %3
%5 = getelementptr inbounds %struct.timeval, %struct.timeval* %1, i64 0, i32 0
%6 = load i64, i64* %5
%7 = icmp eq i64 %4, %6
br i1 %7, label %8, label %17
8: ; preds = %2
%9 = getelementptr inbounds %struct.timeval, %struct.timeval* %0, i64 0, i32 1
%10 = load i64, i64* %9
%11 = getelementptr inbounds %struct.timeval, %struct.timeval* %1, i64 0, i32 1
%12 = load i64, i64* %11
%13 = icmp sgt i64 %10, %12
br i1 %13, label %20, label %14
14: ; preds = %8
%15 = icmp ne i64 %10, %12
%16 = zext i1 %15 to i32
br label %20
17: ; preds = %2
%18 = icmp sgt i64 %4, %6
%19 = select i1 %18, i32 -1, i32 1
br label %20
20: ; preds = %8, %17, %14
%21 = phi i32 [ %16, %14 ], [ %19, %17 ], [ -1, %8 ]
ret i32 %21
}