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| author | Nathan Sidwell <nathan@codesourcery.com> | 2000-02-24 10:07:32 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2000-02-24 10:07:32 +0000 |
| commit | 36c265b175b63f894eb3e2e4ade8eb183a28855d (patch) | |
| tree | 962fb4d7ff5222127ff66ea4b5030cebc44cda72 /gcc/stor-layout.c | |
| parent | da3a471976d248b4a54e90ffaf6f0e264b687737 (diff) | |
| download | gcc-36c265b175b63f894eb3e2e4ade8eb183a28855d.zip gcc-36c265b175b63f894eb3e2e4ade8eb183a28855d.tar.gz gcc-36c265b175b63f894eb3e2e4ade8eb183a28855d.tar.bz2 | |
machmode.h (get_mode_alignment): Declare.
* machmode.h (get_mode_alignment): Declare.
(GET_MODE_ALIGNMENT): Call it.
* stor-layout.c (get_mode_alignment): New function. Make
sure alignment is always power of 2.
From-SVN: r32134
Diffstat (limited to 'gcc/stor-layout.c')
| -rw-r--r-- | gcc/stor-layout.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index be27fae..3783a2f 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -1528,6 +1528,23 @@ get_best_mode (bitsize, bitpos, align, largest_mode, volatilep) return mode; } +/* Return the alignment of MODE. This will be bounded by 1 and + BIGGEST_ALIGNMENT. */ + +unsigned get_mode_alignment (mode) + enum machine_mode mode; +{ + unsigned alignment = GET_MODE_UNIT_SIZE (mode); + + /* Extract the LSB of the size. */ + alignment = alignment & -alignment; + + alignment *= BITS_PER_UNIT; + + alignment = MIN (BIGGEST_ALIGNMENT, MAX (1, alignment)); + return alignment; +} + /* This function is run once to initialize stor-layout.c. */ void |