#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 {
  int tv_sec;
  int tv_usec;
};

/* Variables and functions */
void add_time(struct timeval *t1, struct timeval *t2) {
  t1->tv_sec += t2->tv_sec;
  t1->tv_usec += t2->tv_usec;
  if (t1->tv_usec > 1000000) {
    t1->tv_sec += (t1->tv_usec / 1000000);
    t1->tv_usec %= 1000000;
  }
}


x86 assembly (clang, -O0):
<add_time>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
mov    (%rax),%ecx
mov    -0x8(%rbp),%rax
add    (%rax),%ecx
mov    %ecx,(%rax)
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%ecx
mov    -0x8(%rbp),%rax
add    0x4(%rax),%ecx
mov    %ecx,0x4(%rax)
mov    -0x8(%rbp),%rax
cmpl   $0xf4240,0x4(%rax)
jle    116f <add_time+0x6f>
mov    -0x8(%rbp),%rax
mov    0x4(%rax),%eax
mov    $0xf4240,%ecx
cltd
idiv   %ecx
mov    %eax,%ecx
mov    -0x8(%rbp),%rax
add    (%rax),%ecx
mov    %ecx,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    0x4(%rax),%eax
mov    $0xf4240,%ecx
cltd
idiv   %ecx
mov    -0x18(%rbp),%rax
mov    %edx,0x4(%rax)
pop    %rbp
ret

x86 assembly (clang, -O2):
<add_time>:
mov    (%rdi),%ecx
mov    0x4(%rdi),%eax
add    (%rsi),%ecx
mov    %ecx,(%rdi)
add    0x4(%rsi),%eax
mov    %eax,0x4(%rdi)
cmp    $0xf4241,%eax
jl     1132 <add_time+0x32>
mov    %eax,%edx
imul   $0x431bde83,%rdx,%rdx
shr    $0x32,%rdx
add    %edx,%ecx
mov    %ecx,(%rdi)
imul   $0xf4240,%edx,%ecx
sub    %ecx,%eax
mov    %eax,0x4(%rdi)
ret

LLVM IR (-O0):
%struct.timeval = type { i32, i32 }
define void @add_time(%struct.timeval* %0, %struct.timeval* %1) {
%3 = alloca %struct.timeval*
%4 = alloca %struct.timeval*
store %struct.timeval* %0, %struct.timeval** %3
store %struct.timeval* %1, %struct.timeval** %4
%5 = load %struct.timeval*, %struct.timeval** %4
%6 = getelementptr inbounds %struct.timeval, %struct.timeval* %5, i32 0, i32 0
%7 = load i32, i32* %6
%8 = load %struct.timeval*, %struct.timeval** %3
%9 = getelementptr inbounds %struct.timeval, %struct.timeval* %8, i32 0, i32 0
%10 = load i32, i32* %9
%11 = add nsw i32 %10, %7
store i32 %11, i32* %9
%12 = load %struct.timeval*, %struct.timeval** %4
%13 = getelementptr inbounds %struct.timeval, %struct.timeval* %12, i32 0, i32 1
%14 = load i32, i32* %13
%15 = load %struct.timeval*, %struct.timeval** %3
%16 = getelementptr inbounds %struct.timeval, %struct.timeval* %15, i32 0, i32 1
%17 = load i32, i32* %16
%18 = add nsw i32 %17, %14
store i32 %18, i32* %16
%19 = load %struct.timeval*, %struct.timeval** %3
%20 = getelementptr inbounds %struct.timeval, %struct.timeval* %19, i32 0, i32 1
%21 = load i32, i32* %20
%22 = icmp sgt i32 %21, 1000000
br i1 %22, label %23, label %36
23: ; preds = %2
%24 = load %struct.timeval*, %struct.timeval** %3
%25 = getelementptr inbounds %struct.timeval, %struct.timeval* %24, i32 0, i32 1
%26 = load i32, i32* %25
%27 = sdiv i32 %26, 1000000
%28 = load %struct.timeval*, %struct.timeval** %3
%29 = getelementptr inbounds %struct.timeval, %struct.timeval* %28, i32 0, i32 0
%30 = load i32, i32* %29
%31 = add nsw i32 %30, %27
store i32 %31, i32* %29
%32 = load %struct.timeval*, %struct.timeval** %3
%33 = getelementptr inbounds %struct.timeval, %struct.timeval* %32, i32 0, i32 1
%34 = load i32, i32* %33
%35 = srem i32 %34, 1000000
store i32 %35, i32* %33
br label %36
36: ; preds = %23, %2
ret void
}

LLVM IR (-O2):
%struct.timeval = type { i32, i32 }
define void @add_time(%struct.timeval* nocapture %0, %struct.timeval* nocapture %1) {
%3 = getelementptr inbounds %struct.timeval, %struct.timeval* %1, i64 0, i32 0
%4 = load i32, i32* %3
%5 = getelementptr inbounds %struct.timeval, %struct.timeval* %0, i64 0, i32 0
%6 = load i32, i32* %5
%7 = add nsw i32 %6, %4
store i32 %7, i32* %5
%8 = getelementptr inbounds %struct.timeval, %struct.timeval* %1, i64 0, i32 1
%9 = load i32, i32* %8
%10 = getelementptr inbounds %struct.timeval, %struct.timeval* %0, i64 0, i32 1
%11 = load i32, i32* %10
%12 = add nsw i32 %11, %9
store i32 %12, i32* %10
%13 = icmp sgt i32 %12, 1000000
br i1 %13, label %14, label %18
14: ; preds = %2
%15 = udiv i32 %12, 1000000
%16 = add nsw i32 %15, %7
store i32 %16, i32* %5
%17 = urem i32 %12, 1000000
store i32 %17, i32* %10
br label %18
18: ; preds = %14, %2
ret void
}