#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 display(int *e, int n) {
  int i;
  for (i = 0; i < n * 2; i = i + 2)
    printf("%dx%d  ", e[i], e[i + 1]);
  printf("\n");
}


x86 assembly (clang, -O0):
<display>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
mov    -0xc(%rbp),%ecx
shl    $0x1,%ecx
cmp    %ecx,%eax
jge    116e <display+0x5e>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
add    $0x1,%ecx
movslq %ecx,%rcx
mov    (%rax,%rcx,4),%edx
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x2,%eax
mov    %eax,-0x10(%rbp)
jmp    1126 <display+0x16>
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<display>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
test   %esi,%esi
jle    115c <display+0x3c>
mov    %rdi,%r12
add    %esi,%esi
movslq %esi,%r15
lea    0xec5(%rip),%r14
xor    %ebx,%ebx
nopl   (%rax)
mov    (%r12,%rbx,4),%esi
mov    0x4(%r12,%rbx,4),%edx
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x2,%rbx
cmp    %r15,%rbx
jl     1140 <display+0x20>
mov    $0xa,%edi
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

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

LLVM IR (-O2):
@.str = [8 x i8] c"%dx%d \00"
define void @display(i32* nocapture %0, i32 %1) {
%3 = icmp sgt i32 %1, 0
br i1 %3, label %4, label %17
4: ; preds = %2
%5 = shl nuw nsw i32 %1, 1
%6 = sext i32 %5 to i64
br label %7
7: ; preds = %4, %7
%8 = phi i64 [ 0, %4 ], [ %15, %7 ]
%9 = getelementptr inbounds i32, i32* %0, i64 %8
%10 = load i32, i32* %9
%11 = or i64 %8, 1
%12 = getelementptr inbounds i32, i32* %0, i64 %11
%13 = load i32, i32* %12
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 %10, i32 %13)
%15 = add nuw nsw i64 %8, 2
%16 = icmp slt i64 %15, %6
br i1 %16, label %7, label %17
17: ; preds = %7, %2
%18 = tail call i32 @putchar(i32 10)
ret void
}