#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 mat4_fromXRotation(float *dst, float rad) {
  float s = sinf(rad);
  float c = cosf(rad);
  dst[0] = 1;
  dst[1] = 0;
  dst[2] = 0;
  dst[3] = 0;
  dst[4] = 0;
  dst[5] = c;
  dst[6] = s;
  dst[7] = 0;
  dst[8] = 0;
  dst[9] = -s;
  dst[10] = c;
  dst[11] = 0;
  dst[12] = 0;
  dst[13] = 0;
  dst[14] = 0;
  dst[15] = 1;
}


x86 assembly (clang, -O0):
<mat4_fromXRotation>:
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)
mov    -0x8(%rbp),%rax
movss  0xea5(%rip),%xmm0
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x4(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x8(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0xc(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x10(%rax)
movss  -0x14(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x14(%rax)
movss  -0x10(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x18(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x1c(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x20(%rax)
movss  -0x10(%rbp),%xmm0
movd   %xmm0,%eax
xor    $0x80000000,%eax
movd   %eax,%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x24(%rax)
movss  -0x14(%rbp),%xmm0
mov    -0x8(%rbp),%rax
movss  %xmm0,0x28(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x2c(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x30(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x34(%rax)
mov    -0x8(%rbp),%rax
xorps  %xmm0,%xmm0
movss  %xmm0,0x38(%rax)
mov    -0x8(%rbp),%rax
movss  0xdd8(%rip),%xmm0
movss  %xmm0,0x3c(%rax)
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<mat4_fromXRotation>:
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>
movl   $0x3f800000,(%rbx)
xorps  %xmm1,%xmm1
movups %xmm1,0x4(%rbx)
movss  %xmm0,0x14(%rbx)
movaps 0x10(%rsp),%xmm2
movss  %xmm2,0x18(%rbx)
movq   $0x0,0x1c(%rbx)
xorps  0xe92(%rip),%xmm2
movss  %xmm2,0x24(%rbx)
movss  %xmm0,0x28(%rbx)
movups %xmm1,0x2c(%rbx)
movl   $0x3f800000,0x3c(%rbx)
add    $0x20,%rsp
pop    %rbx
ret

LLVM IR (-O0):
define void @mat4_fromXRotation(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** %3
%12 = getelementptr inbounds float, float* %11, i64 0
store float 1.000000e+00, float* %12
%13 = load float*, float** %3
%14 = getelementptr inbounds float, float* %13, i64 1
store float 0.000000e+00, float* %14
%15 = load float*, float** %3
%16 = getelementptr inbounds float, float* %15, i64 2
store float 0.000000e+00, float* %16
%17 = load float*, float** %3
%18 = getelementptr inbounds float, float* %17, i64 3
store float 0.000000e+00, float* %18
%19 = load float*, float** %3
%20 = getelementptr inbounds float, float* %19, i64 4
store float 0.000000e+00, float* %20
%21 = load float, float* %6
%22 = load float*, float** %3
%23 = getelementptr inbounds float, float* %22, i64 5
store float %21, float* %23
%24 = load float, float* %5
%25 = load float*, float** %3
%26 = getelementptr inbounds float, float* %25, i64 6
store float %24, float* %26
%27 = load float*, float** %3
%28 = getelementptr inbounds float, float* %27, i64 7
store float 0.000000e+00, float* %28
%29 = load float*, float** %3
%30 = getelementptr inbounds float, float* %29, i64 8
store float 0.000000e+00, float* %30
%31 = load float, float* %5
%32 = fneg float %31
%33 = load float*, float** %3
%34 = getelementptr inbounds float, float* %33, i64 9
store float %32, float* %34
%35 = load float, float* %6
%36 = load float*, float** %3
%37 = getelementptr inbounds float, float* %36, i64 10
store float %35, float* %37
%38 = load float*, float** %3
%39 = getelementptr inbounds float, float* %38, i64 11
store float 0.000000e+00, float* %39
%40 = load float*, float** %3
%41 = getelementptr inbounds float, float* %40, i64 12
store float 0.000000e+00, float* %41
%42 = load float*, float** %3
%43 = getelementptr inbounds float, float* %42, i64 13
store float 0.000000e+00, float* %43
%44 = load float*, float** %3
%45 = getelementptr inbounds float, float* %44, i64 14
store float 0.000000e+00, float* %45
%46 = load float*, float** %3
%47 = getelementptr inbounds float, float* %46, i64 15
store float 1.000000e+00, float* %47
ret void
}

LLVM IR (-O2):
define void @mat4_fromXRotation(float* nocapture writeonly %0, float %1) {
%3 = tail call float @sinf(float %1)
%4 = tail call float @cosf(float %1)
store float 1.000000e+00, float* %0
%5 = getelementptr inbounds float, float* %0, i64 1
%6 = getelementptr inbounds float, float* %0, i64 5
%7 = bitcast float* %5 to i8*
store float %4, float* %6
%8 = getelementptr inbounds float, float* %0, i64 6
store float %3, float* %8
%9 = getelementptr inbounds float, float* %0, i64 7
store float 0.000000e+00, float* %9
%10 = getelementptr inbounds float, float* %0, i64 8
store float 0.000000e+00, float* %10
%11 = fneg float %3
%12 = getelementptr inbounds float, float* %0, i64 9
store float %11, float* %12
%13 = getelementptr inbounds float, float* %0, i64 10
store float %4, float* %13
%14 = getelementptr inbounds float, float* %0, i64 11
%15 = getelementptr inbounds float, float* %0, i64 15
%16 = bitcast float* %14 to i8*
store float 1.000000e+00, float* %15
ret void
}