#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 */
typedef int __u8;
typedef int __u32;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
void print_spi_transaction(__u8 *miso, __u8 *mosi, __u32 length) {
  int i;
  printf("MOSI  MISO\n");
  for (i = 0; i < length; i++)
    printf("%.2X  : %.2X\n", mosi[i], miso[i]);
}


x86 assembly (clang, -O0):
<print_spi_transaction>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %edx,-0x14(%rbp)
lea    0xed6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    1176 <print_spi_transaction+0x66>
mov    -0x10(%rbp),%rax
movslq -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
mov    -0x8(%rbp),%rax
movslq -0x18(%rbp),%rcx
mov    (%rax,%rcx,4),%edx
lea    0xeab(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    1138 <print_spi_transaction+0x28>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_spi_transaction>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    %edx,%ebp
mov    %rsi,%r14
mov    %rdi,%r12
lea    0xed7(%rip),%rdi
call   1030 <puts@plt>
test   %ebp,%ebp
jle    116b <print_spi_transaction+0x4b>
mov    %ebp,%ebp
lea    0xeb7(%rip),%r15
xor    %ebx,%ebx
nopl   0x0(%rax,%rax,1)
mov    (%r14,%rbx,4),%esi
mov    (%r12,%rbx,4),%edx
mov    %r15,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1150 <print_spi_transaction+0x30>
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [12 x i8] c"MOSI MISO\0A\00"
@.str.1 = [14 x i8] c"%.2X : %.2X\0A\00"
define void @print_spi_transaction(i32* %0, i32* %1, i32 %2) {
%4 = alloca i32*
%5 = alloca i32*
%6 = alloca i32
%7 = alloca i32
store i32* %0, i32** %4
store i32* %1, i32** %5
store i32 %2, i32* %6
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %7
br label %9
9: ; preds = %25, %3
%10 = load i32, i32* %7
%11 = load i32, i32* %6
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %28
13: ; preds = %9
%14 = load i32*, i32** %5
%15 = load i32, i32* %7
%16 = sext i32 %15 to i64
%17 = getelementptr inbounds i32, i32* %14, i64 %16
%18 = load i32, i32* %17
%19 = load i32*, i32** %4
%20 = load i32, i32* %7
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds i32, i32* %19, i64 %21
%23 = load i32, i32* %22
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i32 %18, i32 %23)
br label %25
25: ; preds = %13
%26 = load i32, i32* %7
%27 = add nsw i32 %26, 1
store i32 %27, i32* %7
br label %9
28: ; preds = %9
ret void
}

LLVM IR (-O2):
@.str.1 = [14 x i8] c"%.2X : %.2X\0A\00"
@str = [11 x i8] c"MOSI MISO\00"
define void @print_spi_transaction(i32* nocapture %0, i32* nocapture %1, i32 %2) {
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str, i64 0, i64 0))
%5 = icmp sgt i32 %2, 0
br i1 %5, label %6, label %17
6: ; preds = %3
%7 = zext i32 %2 to i64
br label %8
8: ; preds = %6, %8
%9 = phi i64 [ 0, %6 ], [ %15, %8 ]
%10 = getelementptr inbounds i32, i32* %1, i64 %9
%11 = load i32, i32* %10
%12 = getelementptr inbounds i32, i32* %0, i64 %9
%13 = load i32, i32* %12
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i32 %11, i32 %13)
%15 = add nuw nsw i64 %9, 1
%16 = icmp eq i64 %15, %7
br i1 %16, label %17, label %8
17: ; preds = %8, %3
ret void
}