#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 */
float roundf(float);
float *vec4_round(float *result, float *a) {
  result[0] = roundf(a[0]);
  result[1] = roundf(a[1]);
  result[2] = roundf(a[2]);
  result[3] = roundf(a[3]);
  return result;
}


x86 assembly (clang, -O0):
<vec4_round>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
movss  (%rax),%xmm0
call   1030 <roundf@plt>
mov    -0x8(%rbp),%rax
movss  %xmm0,(%rax)
mov    -0x10(%rbp),%rax
movss  0x4(%rax),%xmm0
call   1030 <roundf@plt>
mov    -0x8(%rbp),%rax
movss  %xmm0,0x4(%rax)
mov    -0x10(%rbp),%rax
movss  0x8(%rax),%xmm0
call   1030 <roundf@plt>
mov    -0x8(%rbp),%rax
movss  %xmm0,0x8(%rax)
mov    -0x10(%rbp),%rax
movss  0xc(%rax),%xmm0
call   1030 <roundf@plt>
mov    -0x8(%rbp),%rax
movss  %xmm0,0xc(%rax)
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<vec4_round>:
push   %r14
push   %rbx
push   %rax
mov    %rsi,%r14
mov    %rdi,%rbx
movss  (%rsi),%xmm0
call   1030 <roundf@plt>
movss  %xmm0,(%rbx)
movss  0x4(%r14),%xmm0
call   1030 <roundf@plt>
movss  %xmm0,0x4(%rbx)
movss  0x8(%r14),%xmm0
call   1030 <roundf@plt>
movss  %xmm0,0x8(%rbx)
movss  0xc(%r14),%xmm0
call   1030 <roundf@plt>
movss  %xmm0,0xc(%rbx)
mov    %rbx,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
define float* @vec4_round(float* %0, float* %1) {
%3 = alloca float*
%4 = alloca float*
store float* %0, float** %3
store float* %1, float** %4
%5 = load float*, float** %4
%6 = getelementptr inbounds float, float* %5, i64 0
%7 = load float, float* %6
%8 = call float @llvm.round.f32(float %7)
%9 = load float*, float** %3
%10 = getelementptr inbounds float, float* %9, i64 0
store float %8, float* %10
%11 = load float*, float** %4
%12 = getelementptr inbounds float, float* %11, i64 1
%13 = load float, float* %12
%14 = call float @llvm.round.f32(float %13)
%15 = load float*, float** %3
%16 = getelementptr inbounds float, float* %15, i64 1
store float %14, float* %16
%17 = load float*, float** %4
%18 = getelementptr inbounds float, float* %17, i64 2
%19 = load float, float* %18
%20 = call float @llvm.round.f32(float %19)
%21 = load float*, float** %3
%22 = getelementptr inbounds float, float* %21, i64 2
store float %20, float* %22
%23 = load float*, float** %4
%24 = getelementptr inbounds float, float* %23, i64 3
%25 = load float, float* %24
%26 = call float @llvm.round.f32(float %25)
%27 = load float*, float** %3
%28 = getelementptr inbounds float, float* %27, i64 3
store float %26, float* %28
%29 = load float*, float** %3
ret float* %29
}

LLVM IR (-O2):
define float* @vec4_round(float* returned writeonly %0, float* nocapture %1) {
%3 = load float, float* %1
%4 = tail call float @llvm.round.f32(float %3)
store float %4, float* %0
%5 = getelementptr inbounds float, float* %1, i64 1
%6 = load float, float* %5
%7 = tail call float @llvm.round.f32(float %6)
%8 = getelementptr inbounds float, float* %0, i64 1
store float %7, float* %8
%9 = getelementptr inbounds float, float* %1, i64 2
%10 = load float, float* %9
%11 = tail call float @llvm.round.f32(float %10)
%12 = getelementptr inbounds float, float* %0, i64 2
store float %11, float* %12
%13 = getelementptr inbounds float, float* %1, i64 3
%14 = load float, float* %13
%15 = tail call float @llvm.round.f32(float %14)
%16 = getelementptr inbounds float, float* %0, i64 3
store float %15, float* %16
ret float* %0
}