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RTL compiler supports static bitvectors

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* libguile/arrays.c (scm_from_contiguous_typed_array):
* libguile/bytevectors.c (scm_uniform_array_to_bytevector): For
  bitvectors, round up the length to 32-bit units, as they are stored
  internally.  Otherwise I think this probably does the wrong thing for
  the last word on big-endian systems.
* libguile/bitvectors.c (BITVECTOR_LENGTH, BITVECTOR_BITS):
  (scm_c_make_bitvector): Reorder the length and pointer words to match
  the layout of bytevectors.

* module/language/cps/primitives.scm (*branching-primcall-arities*):
* module/system/vm/assembler.scm (br-if-bitvector):
* module/system/vm/disassembler.scm (code-annotation): Add bitvector
  test support.

* module/system/vm/assembler.scm (<uniform-vector-backing-store>): Add
  an element-size field.
  (intern-constant): Adapt make-uniform-vector-backing-store call.  Use
  uniform-array->bytevector, as the old compiler did.
  (link-data): Add bitvector cases.
This commit is contained in:
Andy Wingo 2013-11-03 21:45:34 +01:00
parent 9ae9debbd3
commit d65514a2de
6 changed files with 38 additions and 18 deletions
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7
libguile/arrays.c
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@ -1,5 +1,5 @@
/* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004,2005,
* 2006, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
* 2006, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -242,8 +242,9 @@ scm_from_contiguous_typed_array (SCM type, SCM bounds, const void *bytes,
}
else if (sz < 8)
{
/* byte_len ?= ceil (rlen * sz / 8) */
if (byte_len != (rlen * sz + 7) / 8)
/* Elements of sub-byte size (bitvectors) are addressed in 32-bit
units. */
if (byte_len != ((rlen * sz + 31) / 32) * 4)
SCM_MISC_ERROR ("byte length and dimensions do not match", SCM_EOL);
}
else