#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*/ step1(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step10(int *, int *, int *, int *, int *, int *, int *,
                          int *, float *, float *, float *, float *);
int /*<<< orphan*/ step11(int *, int *, int *, int *, int *, int *, int *,
                          int *, float *, float *, float *, float *);
int /*<<< orphan*/ step2(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step3(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step4(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step5(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step6(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step7(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step8(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
int /*<<< orphan*/ step9(int *, int *, int *, int *, int *, int *, int *, int *,
                         float *, float *, float *, float *);
void fft1D_512(int work_x[512], int work_y[512], int DATA_x[64 * 8],
               int DATA_y[64 * 8], int data_x[8], int data_y[8],
               int smem[8 * 8 * 9], int reversed[8], float sin_64[448],
               float cos_64[448], float sin_512[448], float cos_512[448]) {
  int tid, hi, lo, i, j, stride;
  stride = 64;
  step1(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step2(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step3(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step4(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step5(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step6(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step7(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step8(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step9(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
        cos_64, sin_512, cos_512);
  step10(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
         cos_64, sin_512, cos_512);
  step11(work_x, work_y, DATA_x, DATA_y, data_x, data_y, smem, reversed, sin_64,
         cos_64, sin_512, cos_512);
}


x86 assembly (clang, -O0):
<fft1D_512>:
push   %rbp
mov    %rsp,%rbp
push   %r15
push   %r14
push   %rbx
sub    $0x78,%rsp
mov    0x38(%rbp),%rax
mov    0x30(%rbp),%rax
mov    0x28(%rbp),%rax
mov    0x20(%rbp),%rax
mov    0x18(%rbp),%rax
mov    0x10(%rbp),%rax
mov    %rdi,-0x20(%rbp)
mov    %rsi,-0x28(%rbp)
mov    %rdx,-0x30(%rbp)
mov    %rcx,-0x38(%rbp)
mov    %r8,-0x40(%rbp)
mov    %r9,-0x48(%rbp)
movl   $0x40,-0x60(%rbp)
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1070 <step1@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   10b0 <step2@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1060 <step3@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   10a0 <step4@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1040 <step5@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   10c0 <step6@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1050 <step7@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1080 <step8@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   10d0 <step9@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1090 <step10@plt>
mov    -0x20(%rbp),%rdi
mov    -0x28(%rbp),%rsi
mov    -0x30(%rbp),%rdx
mov    -0x38(%rbp),%rcx
mov    -0x40(%rbp),%r8
mov    -0x48(%rbp),%r9
mov    0x10(%rbp),%r15
mov    0x18(%rbp),%r14
mov    0x20(%rbp),%rbx
mov    0x28(%rbp),%r11
mov    0x30(%rbp),%r10
mov    0x38(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1030 <step11@plt>
add    $0x78,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

x86 assembly (clang, -O2):
<fft1D_512>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0x68,%rsp
mov    %r9,0x8(%rsp)
mov    %rcx,0x18(%rsp)
mov    %rdx,%r15
mov    %rsi,%r14
mov    %rdi,0x58(%rsp)
mov    0xa0(%rsp),%r10
mov    0xa8(%rsp),%r11
mov    %r11,0x20(%rsp)
mov    0xb0(%rsp),%r12
mov    0xb8(%rsp),%rbp
mov    %rbp,0x30(%rsp)
mov    0xc0(%rsp),%rbx
mov    %rbx,0x38(%rsp)
mov    0xc8(%rsp),%rax
mov    %rax,0x10(%rsp)
mov    %r8,%r13
mov    %r8,0x48(%rsp)
push   %rax
push   %rbx
push   %rbp
push   %r12
mov    %r12,%rbx
mov    %r12,0x48(%rsp)
push   %r11
push   %r10
mov    %r10,%r12
mov    %r10,0x80(%rsp)
call   1070 <step1@plt>
add    $0x30,%rsp
mov    0x58(%rsp),%rbp
mov    %rbp,%rdi
mov    %r14,0x40(%rsp)
mov    %r14,%rsi
mov    %r15,0x60(%rsp)
mov    %r15,%rdx
mov    0x18(%rsp),%rcx
mov    %r13,%r8
mov    0x8(%rsp),%r9
push   0x10(%rsp)
push   0x40(%rsp)
mov    0x40(%rsp),%r13
push   %r13
push   %rbx
push   0x40(%rsp)
push   %r12
call   10b0 <step2@plt>
add    $0x30,%rsp
mov    %rbp,%rdi
mov    %r14,%rsi
mov    %r15,%rdx
mov    0x18(%rsp),%rbx
mov    %rbx,%rcx
mov    0x48(%rsp),%r15
mov    %r15,%r8
mov    0x8(%rsp),%r9
mov    0x10(%rsp),%rbp
push   %rbp
mov    0x40(%rsp),%r12
push   %r12
push   %r13
mov    0x40(%rsp),%r14
push   %r14
push   0x40(%rsp)
push   0x78(%rsp)
call   1060 <step3@plt>
add    $0x30,%rsp
mov    0x58(%rsp),%r13
mov    %r13,%rdi
mov    0x40(%rsp),%rsi
mov    0x60(%rsp),%rdx
mov    %rbx,%rcx
mov    %r15,%rbx
mov    %r15,%r8
mov    0x8(%rsp),%r9
push   %rbp
push   %r12
mov    %r12,%r15
push   0x40(%rsp)
push   %r14
mov    0x40(%rsp),%r12
push   %r12
mov    0x78(%rsp),%r14
push   %r14
call   10a0 <step4@plt>
add    $0x30,%rsp
mov    %r13,%rdi
mov    %r13,%rbp
mov    0x40(%rsp),%rsi
mov    0x60(%rsp),%rdx
mov    0x18(%rsp),%rcx
mov    %rbx,%r8
mov    0x8(%rsp),%r9
push   0x10(%rsp)
push   %r15
mov    0x40(%rsp),%r13
push   %r13
push   0x40(%rsp)
push   %r12
push   %r14
call   1040 <step5@plt>
add    $0x30,%rsp
mov    %rbp,%rbx
mov    %rbp,%rdi
mov    0x40(%rsp),%rsi
mov    %rsi,%r12
mov    0x60(%rsp),%r15
mov    %r15,%rdx
mov    0x18(%rsp),%r14
mov    %r14,%rcx
mov    0x48(%rsp),%rbp
mov    %rbp,%r8
mov    0x8(%rsp),%r9
push   0x10(%rsp)
push   0x40(%rsp)
push   %r13
mov    0x40(%rsp),%r13
push   %r13
push   0x40(%rsp)
push   0x78(%rsp)
call   10c0 <step6@plt>
add    $0x30,%rsp
mov    %rbx,%rdi
mov    %r12,%rsi
mov    %r15,%rdx
mov    %r14,%rcx
mov    %rbp,%r8
mov    0x8(%rsp),%rbp
mov    %rbp,%r9
push   0x10(%rsp)
push   0x40(%rsp)
mov    0x40(%rsp),%r14
push   %r14
push   %r13
push   0x40(%rsp)
mov    0x78(%rsp),%rbx
push   %rbx
call   1050 <step7@plt>
add    $0x30,%rsp
mov    0x58(%rsp),%rdi
mov    0x40(%rsp),%rsi
mov    %r15,%rdx
mov    0x18(%rsp),%rcx
mov    0x48(%rsp),%r13
mov    %r13,%r8
mov    %rbp,%r9
push   0x10(%rsp)
mov    0x40(%rsp),%r12
push   %r12
push   %r14
push   0x40(%rsp)
mov    0x40(%rsp),%r14
push   %r14
push   %rbx
call   1080 <step8@plt>
add    $0x30,%rsp
mov    0x58(%rsp),%rbx
mov    %rbx,%rdi
mov    0x40(%rsp),%rsi
mov    %r15,%rdx
mov    0x18(%rsp),%rcx
mov    %r13,%r8
mov    %rbp,%r9
mov    0x10(%rsp),%r15
push   %r15
push   %r12
push   0x40(%rsp)
push   0x40(%rsp)
push   %r14
mov    0x78(%rsp),%r14
push   %r14
call   10d0 <step9@plt>
add    $0x30,%rsp
mov    %rbx,%rdi
mov    0x40(%rsp),%r13
mov    %r13,%rsi
mov    0x60(%rsp),%rbp
mov    %rbp,%rdx
mov    0x18(%rsp),%r12
mov    %r12,%rcx
mov    0x48(%rsp),%r8
mov    0x8(%rsp),%r9
push   %r15
push   0x40(%rsp)
push   0x40(%rsp)
push   0x40(%rsp)
push   0x40(%rsp)
push   %r14
call   1090 <step10@plt>
add    $0x30,%rsp
mov    %rbx,%rdi
mov    %r13,%rsi
mov    %rbp,%rdx
mov    %r12,%rcx
mov    0x48(%rsp),%r8
mov    0x8(%rsp),%r9
add    $0x68,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
jmp    1030 <step11@plt>

LLVM IR (-O0):
define void @fft1D_512(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11) {
%13 = alloca i32*
%14 = alloca i32*
%15 = alloca i32*
%16 = alloca i32*
%17 = alloca i32*
%18 = alloca i32*
%19 = alloca i32*
%20 = alloca i32*
%21 = alloca float*
%22 = alloca float*
%23 = alloca float*
%24 = alloca float*
%25 = alloca i32
%26 = alloca i32
%27 = alloca i32
%28 = alloca i32
%29 = alloca i32
%30 = alloca i32
store i32* %0, i32** %13
store i32* %1, i32** %14
store i32* %2, i32** %15
store i32* %3, i32** %16
store i32* %4, i32** %17
store i32* %5, i32** %18
store i32* %6, i32** %19
store i32* %7, i32** %20
store float* %8, float** %21
store float* %9, float** %22
store float* %10, float** %23
store float* %11, float** %24
store i32 64, i32* %30
%31 = load i32*, i32** %13
%32 = load i32*, i32** %14
%33 = load i32*, i32** %15
%34 = load i32*, i32** %16
%35 = load i32*, i32** %17
%36 = load i32*, i32** %18
%37 = load i32*, i32** %19
%38 = load i32*, i32** %20
%39 = load float*, float** %21
%40 = load float*, float** %22
%41 = load float*, float** %23
%42 = load float*, float** %24
%43 = call i32 @step1(i32* %31, i32* %32, i32* %33, i32* %34, i32* %35, i32* %36, i32* %37, i32* %38, float* %39, float* %40, float* %41, float* %42)
%44 = load i32*, i32** %13
%45 = load i32*, i32** %14
%46 = load i32*, i32** %15
%47 = load i32*, i32** %16
%48 = load i32*, i32** %17
%49 = load i32*, i32** %18
%50 = load i32*, i32** %19
%51 = load i32*, i32** %20
%52 = load float*, float** %21
%53 = load float*, float** %22
%54 = load float*, float** %23
%55 = load float*, float** %24
%56 = call i32 @step2(i32* %44, i32* %45, i32* %46, i32* %47, i32* %48, i32* %49, i32* %50, i32* %51, float* %52, float* %53, float* %54, float* %55)
%57 = load i32*, i32** %13
%58 = load i32*, i32** %14
%59 = load i32*, i32** %15
%60 = load i32*, i32** %16
%61 = load i32*, i32** %17
%62 = load i32*, i32** %18
%63 = load i32*, i32** %19
%64 = load i32*, i32** %20
%65 = load float*, float** %21
%66 = load float*, float** %22
%67 = load float*, float** %23
%68 = load float*, float** %24
%69 = call i32 @step3(i32* %57, i32* %58, i32* %59, i32* %60, i32* %61, i32* %62, i32* %63, i32* %64, float* %65, float* %66, float* %67, float* %68)
%70 = load i32*, i32** %13
%71 = load i32*, i32** %14
%72 = load i32*, i32** %15
%73 = load i32*, i32** %16
%74 = load i32*, i32** %17
%75 = load i32*, i32** %18
%76 = load i32*, i32** %19
%77 = load i32*, i32** %20
%78 = load float*, float** %21
%79 = load float*, float** %22
%80 = load float*, float** %23
%81 = load float*, float** %24
%82 = call i32 @step4(i32* %70, i32* %71, i32* %72, i32* %73, i32* %74, i32* %75, i32* %76, i32* %77, float* %78, float* %79, float* %80, float* %81)
%83 = load i32*, i32** %13
%84 = load i32*, i32** %14
%85 = load i32*, i32** %15
%86 = load i32*, i32** %16
%87 = load i32*, i32** %17
%88 = load i32*, i32** %18
%89 = load i32*, i32** %19
%90 = load i32*, i32** %20
%91 = load float*, float** %21
%92 = load float*, float** %22
%93 = load float*, float** %23
%94 = load float*, float** %24
%95 = call i32 @step5(i32* %83, i32* %84, i32* %85, i32* %86, i32* %87, i32* %88, i32* %89, i32* %90, float* %91, float* %92, float* %93, float* %94)
%96 = load i32*, i32** %13
%97 = load i32*, i32** %14
%98 = load i32*, i32** %15
%99 = load i32*, i32** %16
%100 = load i32*, i32** %17
%101 = load i32*, i32** %18
%102 = load i32*, i32** %19
%103 = load i32*, i32** %20
%104 = load float*, float** %21
%105 = load float*, float** %22
%106 = load float*, float** %23
%107 = load float*, float** %24
%108 = call i32 @step6(i32* %96, i32* %97, i32* %98, i32* %99, i32* %100, i32* %101, i32* %102, i32* %103, float* %104, float* %105, float* %106, float* %107)
%109 = load i32*, i32** %13
%110 = load i32*, i32** %14
%111 = load i32*, i32** %15
%112 = load i32*, i32** %16
%113 = load i32*, i32** %17
%114 = load i32*, i32** %18
%115 = load i32*, i32** %19
%116 = load i32*, i32** %20
%117 = load float*, float** %21
%118 = load float*, float** %22
%119 = load float*, float** %23
%120 = load float*, float** %24
%121 = call i32 @step7(i32* %109, i32* %110, i32* %111, i32* %112, i32* %113, i32* %114, i32* %115, i32* %116, float* %117, float* %118, float* %119, float* %120)
%122 = load i32*, i32** %13
%123 = load i32*, i32** %14
%124 = load i32*, i32** %15
%125 = load i32*, i32** %16
%126 = load i32*, i32** %17
%127 = load i32*, i32** %18
%128 = load i32*, i32** %19
%129 = load i32*, i32** %20
%130 = load float*, float** %21
%131 = load float*, float** %22
%132 = load float*, float** %23
%133 = load float*, float** %24
%134 = call i32 @step8(i32* %122, i32* %123, i32* %124, i32* %125, i32* %126, i32* %127, i32* %128, i32* %129, float* %130, float* %131, float* %132, float* %133)
%135 = load i32*, i32** %13
%136 = load i32*, i32** %14
%137 = load i32*, i32** %15
%138 = load i32*, i32** %16
%139 = load i32*, i32** %17
%140 = load i32*, i32** %18
%141 = load i32*, i32** %19
%142 = load i32*, i32** %20
%143 = load float*, float** %21
%144 = load float*, float** %22
%145 = load float*, float** %23
%146 = load float*, float** %24
%147 = call i32 @step9(i32* %135, i32* %136, i32* %137, i32* %138, i32* %139, i32* %140, i32* %141, i32* %142, float* %143, float* %144, float* %145, float* %146)
%148 = load i32*, i32** %13
%149 = load i32*, i32** %14
%150 = load i32*, i32** %15
%151 = load i32*, i32** %16
%152 = load i32*, i32** %17
%153 = load i32*, i32** %18
%154 = load i32*, i32** %19
%155 = load i32*, i32** %20
%156 = load float*, float** %21
%157 = load float*, float** %22
%158 = load float*, float** %23
%159 = load float*, float** %24
%160 = call i32 @step10(i32* %148, i32* %149, i32* %150, i32* %151, i32* %152, i32* %153, i32* %154, i32* %155, float* %156, float* %157, float* %158, float* %159)
%161 = load i32*, i32** %13
%162 = load i32*, i32** %14
%163 = load i32*, i32** %15
%164 = load i32*, i32** %16
%165 = load i32*, i32** %17
%166 = load i32*, i32** %18
%167 = load i32*, i32** %19
%168 = load i32*, i32** %20
%169 = load float*, float** %21
%170 = load float*, float** %22
%171 = load float*, float** %23
%172 = load float*, float** %24
%173 = call i32 @step11(i32* %161, i32* %162, i32* %163, i32* %164, i32* %165, i32* %166, i32* %167, i32* %168, float* %169, float* %170, float* %171, float* %172)
ret void
}

LLVM IR (-O2):
define void @fft1D_512(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11) {
%13 = tail call i32 @step1(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%14 = tail call i32 @step2(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%15 = tail call i32 @step3(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%16 = tail call i32 @step4(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%17 = tail call i32 @step5(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%18 = tail call i32 @step6(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%19 = tail call i32 @step7(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%20 = tail call i32 @step8(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%21 = tail call i32 @step9(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%22 = tail call i32 @step10(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
%23 = tail call i32 @step11(i32* %0, i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, float* %8, float* %9, float* %10, float* %11)
ret void
}