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| author | nathan <nathan@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-02-24 10:07:32 +0000 |
|---|---|---|
| committer | nathan <nathan@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-02-24 10:07:32 +0000 |
| commit | 3ce66181030ba3ff9867db2237ce96be6d158bdc (patch) | |
| tree | 962fb4d7ff5222127ff66ea4b5030cebc44cda72 /gcc/stor-layout.c | |
| parent | ca4d26d847c16099c4f7a20a23858cbc49daad75 (diff) | |
| download | gcc-3ce66181030ba3ff9867db2237ce96be6d158bdc.tar.gz | |
* 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32134 138bc75d-0d04-0410-961f-82ee72b054a4
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 be27faeb221..3783a2ff814 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 |