diff options
Diffstat (limited to 'gcc/stor-layout.c')
| -rw-r--r-- | gcc/stor-layout.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index db4c09f29f7..9f94d029c6d 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -1,6 +1,6 @@ /* C-compiler utilities for types and variables storage layout Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1996, 1998, - 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GCC. @@ -298,6 +298,29 @@ int_mode_for_mode (mode) return mode; } +/* Return the alignment of MODE. This will be bounded by 1 and + BIGGEST_ALIGNMENT. */ + +unsigned int +get_mode_alignment (mode) + enum machine_mode mode; +{ + unsigned int alignment; + + if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT + || GET_MODE_CLASS (mode) == MODE_COMPLEX_INT) + alignment = GET_MODE_UNIT_SIZE (mode); + else + alignment = GET_MODE_SIZE (mode); + + /* Extract the LSB of the size. */ + alignment = alignment & -alignment; + alignment *= BITS_PER_UNIT; + + alignment = MIN (BIGGEST_ALIGNMENT, MAX (1, alignment)); + return alignment; +} + /* Return the value of VALUE, rounded up to a multiple of DIVISOR. This can only be applied to objects of a sizetype. */ |