#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*/ write_data(int, int);
void render_dotmatrix(int *display) {
  int i;
  for (i = 0; i < 8; i++) {
    write_data(i + 1, *display);
    display++;
  }
}


x86 assembly (clang, -O0):
<render_dotmatrix>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
cmpl   $0x8,-0xc(%rbp)
jge    1158 <render_dotmatrix+0x48>
mov    -0xc(%rbp),%edi
add    $0x1,%edi
mov    -0x8(%rbp),%rax
mov    (%rax),%esi
call   1030 <write_data@plt>
mov    -0x8(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x8(%rbp)
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1123 <render_dotmatrix+0x13>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<render_dotmatrix>:
push   %rbx
mov    %rdi,%rbx
mov    (%rdi),%esi
mov    $0x1,%edi
call   1030 <write_data@plt>
mov    0x4(%rbx),%esi
mov    $0x2,%edi
call   1030 <write_data@plt>
mov    0x8(%rbx),%esi
mov    $0x3,%edi
call   1030 <write_data@plt>
mov    0xc(%rbx),%esi
mov    $0x4,%edi
call   1030 <write_data@plt>
mov    0x10(%rbx),%esi
mov    $0x5,%edi
call   1030 <write_data@plt>
mov    0x14(%rbx),%esi
mov    $0x6,%edi
call   1030 <write_data@plt>
mov    0x18(%rbx),%esi
mov    $0x7,%edi
call   1030 <write_data@plt>
mov    0x1c(%rbx),%esi
mov    $0x8,%edi
pop    %rbx
jmp    1030 <write_data@plt>

LLVM IR (-O0):
define void @render_dotmatrix(i32* %0) {
%2 = alloca i32*
%3 = alloca i32
store i32* %0, i32** %2
store i32 0, i32* %3
br label %4
4: ; preds = %15, %1
%5 = load i32, i32* %3
%6 = icmp slt i32 %5, 8
br i1 %6, label %7, label %18
7: ; preds = %4
%8 = load i32, i32* %3
%9 = add nsw i32 %8, 1
%10 = load i32*, i32** %2
%11 = load i32, i32* %10
%12 = call i32 @write_data(i32 %9, i32 %11)
%13 = load i32*, i32** %2
%14 = getelementptr inbounds i32, i32* %13, i32 1
store i32* %14, i32** %2
br label %15
15: ; preds = %7
%16 = load i32, i32* %3
%17 = add nsw i32 %16, 1
store i32 %17, i32* %3
br label %4
18: ; preds = %4
ret void
}

LLVM IR (-O2):
define void @render_dotmatrix(i32* nocapture %0) {
%2 = load i32, i32* %0
%3 = tail call i32 @write_data(i32 1, i32 %2)
%4 = getelementptr inbounds i32, i32* %0, i64 1
%5 = load i32, i32* %4
%6 = tail call i32 @write_data(i32 2, i32 %5)
%7 = getelementptr inbounds i32, i32* %0, i64 2
%8 = load i32, i32* %7
%9 = tail call i32 @write_data(i32 3, i32 %8)
%10 = getelementptr inbounds i32, i32* %0, i64 3
%11 = load i32, i32* %10
%12 = tail call i32 @write_data(i32 4, i32 %11)
%13 = getelementptr inbounds i32, i32* %0, i64 4
%14 = load i32, i32* %13
%15 = tail call i32 @write_data(i32 5, i32 %14)
%16 = getelementptr inbounds i32, i32* %0, i64 5
%17 = load i32, i32* %16
%18 = tail call i32 @write_data(i32 6, i32 %17)
%19 = getelementptr inbounds i32, i32* %0, i64 6
%20 = load i32, i32* %19
%21 = tail call i32 @write_data(i32 7, i32 %20)
%22 = getelementptr inbounds i32, i32* %0, i64 7
%23 = load i32, i32* %22
%24 = tail call i32 @write_data(i32 8, i32 %23)
ret void
}