#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 cosf(float);
float sinf(float);
void mat3_fromRotation(float *dst, float rad) {
  float s = sinf(rad), c = cosf(rad);
  dst[0] = c;
  dst[1] = s;
  dst[2] = 0;
  dst[3] = -s;
  dst[4] = c;
  dst[5] = 0;
  dst[6] = 0;
  dst[7] = 0;
  dst[8] = 1;
}


x86 assembly (clang, -O0):
<mat3_fromRotation>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
movss  %xmm0,-0xc(%rbp)
movss  -0xc(%rbp),%xmm0
call   1030 <sinf@plt>
movss  %xmm0,-0x10(%rbp)
movss  -0xc(%rbp),%xmm0
call   1040 <cosf@plt>
movss  %xmm0,-0x14(%rbp)
movss  -0x14(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,(%rax)
movss  -0x10(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x4(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x8(%rax)
movss  -0x10(%rbp),%xmm0
movd   %xmm0,%eax
xor    $0x80000000,%eax
movd   %eax,%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0xc(%rax)
movss  -0x14(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x10(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x14(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x18(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x1c(%rax)
mov    -0x8(%rbp),%rax
movss  0xe31(%rip),%xmm0
movss  %xmm0,0x20(%rax)
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<mat3_fromRotation>:
push   %rbx
sub    $0x20,%rsp
movss  %xmm0,0xc(%rsp)
mov    %rdi,%rbx
call   1030 <sinf@plt>
movaps %xmm0,0x10(%rsp)
movss  0xc(%rsp),%xmm0
call   1040 <cosf@plt>
movss  %xmm0,(%rbx)
movaps 0x10(%rsp),%xmm1
movss  %xmm1,0x4(%rbx)
movl   $0x0,0x8(%rbx)
xorps  0xea1(%rip),%xmm1
movss  %xmm1,0xc(%rbx)
movss  %xmm0,0x10(%rbx)
movaps 0xea0(%rip),%xmm0
movups %xmm0,0x14(%rbx)
add    $0x20,%rsp
pop    %rbx
ret

LLVM IR (-O0):
define void @mat3_fromRotation(float* %0, float %1) {
%3 = alloca float*
%4 = alloca float
%5 = alloca float
%6 = alloca float
store float* %0, float** %3
store float %1, float* %4
%7 = load float, float* %4
%8 = call float @sinf(float %7)
store float %8, float* %5
%9 = load float, float* %4
%10 = call float @cosf(float %9)
store float %10, float* %6
%11 = load float, float* %6
%12 = load float*, float** %3
%13 = getelementptr inbounds float, float* %12, i64 0
store float %11, float* %13
%14 = load float, float* %5
%15 = load float*, float** %3
%16 = getelementptr inbounds float, float* %15, i64 1
store float %14, float* %16
%17 = load float*, float** %3
%18 = getelementptr inbounds float, float* %17, i64 2
store float 0.000000e+00, float* %18
%19 = load float, float* %5
%20 = fneg float %19
%21 = load float*, float** %3
%22 = getelementptr inbounds float, float* %21, i64 3
store float %20, float* %22
%23 = load float, float* %6
%24 = load float*, float** %3
%25 = getelementptr inbounds float, float* %24, i64 4
store float %23, float* %25
%26 = load float*, float** %3
%27 = getelementptr inbounds float, float* %26, i64 5
store float 0.000000e+00, float* %27
%28 = load float*, float** %3
%29 = getelementptr inbounds float, float* %28, i64 6
store float 0.000000e+00, float* %29
%30 = load float*, float** %3
%31 = getelementptr inbounds float, float* %30, i64 7
store float 0.000000e+00, float* %31
%32 = load float*, float** %3
%33 = getelementptr inbounds float, float* %32, i64 8
store float 1.000000e+00, float* %33
ret void
}

LLVM IR (-O2):
define void @mat3_fromRotation(float* nocapture writeonly %0, float %1) {
%3 = tail call float @sinf(float %1)
%4 = tail call float @cosf(float %1)
store float %4, float* %0
%5 = getelementptr inbounds float, float* %0, i64 1
store float %3, float* %5
%6 = getelementptr inbounds float, float* %0, i64 2
store float 0.000000e+00, float* %6
%7 = fneg float %3
%8 = getelementptr inbounds float, float* %0, i64 3
store float %7, float* %8
%9 = getelementptr inbounds float, float* %0, i64 4
store float %4, float* %9
%10 = getelementptr inbounds float, float* %0, i64 5
%11 = bitcast float* %10 to <4 x float>*
store <4 x float> <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00>, <4 x float>* %11
ret void
}