Remove alpha support

This is a dead architecture without an official Debian port.

lightening.h

@@ -103,8 +103,6 @@ typedef struct jit_reloc
 #  include "lightening/aarch64.h"
 #elif defined(__s390__) || defined(__s390x__)
 #  include "lightening/s390.h"
-#elif defined(__alpha__)
-#  include "lightening/alpha.h"
 #endif
 
 typedef struct jit_state	jit_state_t;

lightening/alpha.h

@@ -1,105 +0,0 @@
-/*
- * Copyright (C) 2014-2017  Free Software Foundation, Inc.
- *
- * This file is part of GNU lightning.
- *
- * GNU lightning is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 3, or (at your option)
- * any later version.
- *
- * GNU lightning is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
- * License for more details.
- *
- * Authors:
- *	Paulo Cesar Pereira de Andrade
- */
-
-#ifndef _jit_alpha_h
-#define _jit_alpha_h
-
-#define JIT_HASH_CONSTS		1
-#define JIT_NUM_OPERANDS	3
-
-/*
- * Types
- */
-#define JIT_FP			_FP
-typedef enum {
-#define jit_r(i)		(_S0 + (i))
-#define jit_r_num()		3
-#define jit_v(i)		(_S3 + (i))
-#define jit_v_num()		3
-#define jit_f(i)		(_F2 + (i))
-#define jit_f_num()		8
-    /* Volatile - Assembly temporary register */
-    _AT,
-    /* Volatile - Return value register */
-    _V0,
-    /* Volatile - Temporary registers */
-    _T0,		_T1,		_T2,		_T3,
-    _T4,		_T5,		_T6,		_T7,
-    _T8,		_T9,		_T10,		_T11,
-    /* FIXME Use callee save register for r0-r2 (instead of 12+ JIT_RN
-     * and 6 JIT_VN because division must call a function)
-     * FIX would be to create proper functions that do not clobber
-     * registers and inject/inline them in the jit */
-#define JIT_R0			_S0
-#define JIT_R1			_S1
-#define JIT_R2			_S2
-#define JIT_V0			_S3
-#define JIT_V1			_S4
-#define JIT_V2			_S5
-    /* Nonvolatile - Saved registers */
-    _S0,		_S1,		_S2,		_S3,
-    _S4,		_S5,
-    /* Nonvolatile - Frame pointer */
-    _FP,
-    /* Volatile - Argument registers */
-    _A5, 		_A4,		_A3,		_A2,
-    _A1,		_A0,
-    /* Volatile - Return address register */
-    _RA,
-    /* Volatile - Temporary register */
-    _PV,
-    /* Nonvolatile - Global pointer */
-    _GP,
-    /* Nonvolatile - Stack pointer */
-    _SP,
-    /* Constant  RAZ / writes ignored */
-    _ZERO,
-#define JIT_F0			_F2
-#define JIT_F1			_F3
-#define JIT_F2			_F4
-#define JIT_F3			_F5
-#define JIT_F4			_F6
-#define JIT_F5			_F7
-#define JIT_F6			_F8
-#define JIT_F7			_F9
-    /* Volatile - Return value register (real part) */
-    _F0,
-    /* Volatile - Return value register (imaginary part) */
-    _F1,
-    /* Nonvolatile - Saved registers */
-    _F2,		_F3,		_F4,		_F5,
-    _F6,		_F7,		_F8,		_F9,
-    /* Volatile - Temporary registers */
-    _F10,		_F11,		_F12,		_F13,
-    _F14,		_F15,
-    /* Volatile - Argument registers */
-    _F21,		_F20,		_F19,		_F18,
-    _F17,		_F16,
-    /* Volatile - Temporary registers */
-    _F22,		_F23,		_R24,		_F25,
-    _F26,		_F27,		_F28,		_F29,
-    _F30,
-    /* Constant - RAZ / writes ignored */
-    _F31,
-    /* Lightning internal invalid register identifier */
-    _NOREG,
-#define JIT_NOREG		_NOREG
-} jit_reg_t;
-
-#endif /* _jit_alpha_h */

lightening/endian.h

@@ -30,9 +30,6 @@
 #if defined(__hpux) && defined(__hppa__)
 #  include <machine/param.h>
 #endif
-#if defined(__alpha__) && defined(__osf__)
-#  include <machine/endian.h>
-#endif
 
 #ifndef __WORDSIZE
 #  if defined(WORDSIZE)				/* ppc darwin */

lightening/lightening.c

@@ -330,8 +330,6 @@ jit_patch_there(jit_state_t* _jit, jit_reloc_t reloc, jit_pointer_t addr)
 # include "aarch64.c"
 #elif defined(__s390__) || defined(__s390x__)
 # include "s390.c"
-#elif defined(__alpha__)
-# include "alpha.c"
 #endif
 
 #define JIT_IMPL_0(stem, ret) \