#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 calc(int *, int);
int /*<<< orphan*/ printf(char *, int, ...);
int main() {
  int balance[] = {10, 20, 30};
  int ret = calc(balance, 3);
  printf("sum is %d\n", ret);
  for (int i = 0; i < 3; i++) {
    printf("balance[%d] is %d\n", i, balance[i]);
  };
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeca(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    0xec8(%rip),%eax
mov    %eax,-0x8(%rbp)
lea    -0x10(%rbp),%rdi
mov    $0x3,%esi
call   1040 <calc@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%esi
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x18(%rbp)
cmpl   $0x3,-0x18(%rbp)
jge    119d <main+0x7d>
mov    -0x18(%rbp),%esi
movslq -0x18(%rbp),%rax
mov    -0x10(%rbp,%rax,4),%edx
lea    0xe8f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    116c <main+0x4c>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    0xedd(%rip),%eax
mov    %eax,0x8(%rsp)
mov    0xeca(%rip),%rax
mov    %rax,(%rsp)
mov    %rsp,%rdi
mov    $0x3,%esi
call   1040 <calc@plt>
lea    0xebe(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    (%rsp),%edx
lea    0xeb6(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%edx
mov    %rbx,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x8(%rsp),%edx
mov    %rbx,%rdi
mov    $0x2,%esi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

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

LLVM IR (-O2):
@__const.main.balance = [3 x i32] [i32 10, i32 20, i32 30]
@.str = [11 x i8] c"sum is %d\0A\00"
@.str.1 = [19 x i8] c"balance[%d] is %d\0A\00"
define i32 @main() {
%1 = alloca [3 x i32]
%2 = bitcast [3 x i32]* %1 to i8*
%3 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 0
%4 = call i32 @calc(i32* %3, i32 3)
%5 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = load i32, i32* %3
%7 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 0, i32 %6)
%8 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 1
%9 = load i32, i32* %8
%10 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 1, i32 %9)
%11 = getelementptr inbounds [3 x i32], [3 x i32]* %1, i64 0, i64 2
%12 = load i32, i32* %11
%13 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0), i32 2, i32 %12)
ret i32 0
}