#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 *, ...);
void array_to_1d_pointer(int (*b)[2], int m, int n) {
  int i, j, *p;
  printf("Array to 1d pointer\n");
  for (i = 0; i < m; i++) {
    p = (int *)b;
    for (j = 0; j < n; j++) {
      printf("\t%d", *(p + j));
    }
    printf("\n");
    b++;
  }
}


x86 assembly (clang, -O0):
<array_to_1d_pointer>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    %edx,-0x10(%rbp)
lea    0xed7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11ad <array_to_1d_pointer+0x9d>
mov    -0x8(%rbp),%rax
mov    %rax,-0x20(%rbp)
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1185 <array_to_1d_pointer+0x75>
mov    -0x20(%rbp),%rax
movslq -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xea5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    1152 <array_to_1d_pointer+0x42>
lea    0xe87(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
add    $0x8,%rax
mov    %rax,-0x8(%rbp)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1137 <array_to_1d_pointer+0x27>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<array_to_1d_pointer>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
mov    %edx,0x4(%rsp)
mov    %esi,%r15d
mov    %rdi,%rbx
lea    0xeb8(%rip),%rdi
call   1040 <puts@plt>
test   %r15d,%r15d
jle    11b9 <array_to_1d_pointer+0x89>
mov    0x4(%rsp),%ebp
lea    0xe9f(%rip),%r12
xor    %r13d,%r13d
jmp    1187 <array_to_1d_pointer+0x57>
cs nopw 0x0(%rax,%rax,1)
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x8,%rbx
add    $0x1,%r13d
cmp    %r15d,%r13d
je     11b9 <array_to_1d_pointer+0x89>
cmpl   $0x0,0x4(%rsp)
jle    1170 <array_to_1d_pointer+0x40>
xor    %r14d,%r14d
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    (%rbx,%r14,4),%esi
mov    %r12,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%r14
cmp    %r14,%rbp
jne    11a0 <array_to_1d_pointer+0x70>
jmp    1170 <array_to_1d_pointer+0x40>
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [21 x i8] c"Array to 1d pointer\0A\00"
@.str.1 = [4 x i8] c"\09%d\00"
@.str.2 = [2 x i8] c"\0A\00"
define void @array_to_1d_pointer([2 x i32]* %0, i32 %1, i32 %2) {
%4 = alloca [2 x i32]*
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32*
store [2 x i32]* %0, [2 x i32]** %4
store i32 %1, i32* %5
store i32 %2, i32* %6
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %7
br label %11
11: ; preds = %36, %3
%12 = load i32, i32* %7
%13 = load i32, i32* %5
%14 = icmp slt i32 %12, %13
br i1 %14, label %15, label %39
15: ; preds = %11
%16 = load [2 x i32]*, [2 x i32]** %4
%17 = bitcast [2 x i32]* %16 to i32*
store i32* %17, i32** %9
store i32 0, i32* %8
br label %18
18: ; preds = %29, %15
%19 = load i32, i32* %8
%20 = load i32, i32* %6
%21 = icmp slt i32 %19, %20
br i1 %21, label %22, label %32
22: ; preds = %18
%23 = load i32*, i32** %9
%24 = load i32, i32* %8
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds i32, i32* %23, i64 %25
%27 = load i32, i32* %26
%28 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %27)
br label %29
29: ; preds = %22
%30 = load i32, i32* %8
%31 = add nsw i32 %30, 1
store i32 %31, i32* %8
br label %18
32: ; preds = %18
%33 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%34 = load [2 x i32]*, [2 x i32]** %4
%35 = getelementptr inbounds [2 x i32], [2 x i32]* %34, i32 1
store [2 x i32]* %35, [2 x i32]** %4
br label %36
36: ; preds = %32
%37 = load i32, i32* %7
%38 = add nsw i32 %37, 1
store i32 %38, i32* %7
br label %11
39: ; preds = %11
ret void
}

LLVM IR (-O2):
@.str.1 = [4 x i8] c"\09%d\00"
@str = [20 x i8] c"Array to 1d pointer\00"
define void @array_to_1d_pointer([2 x i32]* nocapture %0, i32 %1, i32 %2) {
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str, i64 0, i64 0))
%5 = icmp sgt i32 %1, 0
br i1 %5, label %6, label %24
6: ; preds = %3
%7 = icmp sgt i32 %2, 0
%8 = zext i32 %2 to i64
br label %9
9: ; preds = %6, %19
%10 = phi [2 x i32]* [ %0, %6 ], [ %21, %19 ]
%11 = phi i32 [ 0, %6 ], [ %22, %19 ]
br i1 %7, label %12, label %19
12: ; preds = %9, %12
%13 = phi i64 [ %17, %12 ], [ 0, %9 ]
%14 = getelementptr inbounds [2 x i32], [2 x i32]* %10, i64 0, i64 %13
%15 = load i32, i32* %14
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %15)
%17 = add nuw nsw i64 %13, 1
%18 = icmp eq i64 %17, %8
br i1 %18, label %19, label %12
19: ; preds = %12, %9
%20 = tail call i32 @putchar(i32 10)
%21 = getelementptr inbounds [2 x i32], [2 x i32]* %10, i64 1
%22 = add nuw nsw i32 %11, 1
%23 = icmp eq i32 %22, %1
br i1 %23, label %24, label %9
24: ; preds = %19, %3
ret void
}