#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 printarray(double *A, int n) {
  printf("\n[ ");
  for (int i = 0; i < n; i++)
    printf("% lf ", A[i]);
  printf("]\n ");
}


x86 assembly (clang, -O0):
<printarray>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1169 <printarray+0x59>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsd  (%rax,%rcx,8),%xmm0
lea    0xeb0(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <printarray+0x24>
lea    0xe9a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printarray>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%r15
lea    0xedd(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
test   %ebp,%ebp
jle    1159 <printarray+0x49>
mov    %ebp,%ebp
xor    %ebx,%ebx
lea    0xecb(%rip),%r14
nopl   0x0(%rax)
movsd  (%r15,%rbx,8),%xmm0
mov    %r14,%rdi
mov    $0x1,%al
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1140 <printarray+0x30>
lea    0xeaa(%rip),%rdi
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
jmp    1030 <printf@plt>

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

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