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| author | Hans-Peter Nilsson <hp@bitrange.com> | 2025-07-16 05:29:05 +0200 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@gcc.gnu.org> | 2025-08-04 18:02:50 +0200 |
| commit | ac421ac33ed64619f79b8f3c4edb4fb30b1640c5 (patch) | |
| tree | fa60448898a0ad26c79354a8d6d0ede5283ba13c /gcc/LANGUAGES | |
| parent | 490c2c885ee5de1659d8339ea6bedd908acfacea (diff) | |
| download | gcc-master.zip gcc-master.tar.gz gcc-master.tar.bz2 | |
The old GET_MODE_SIZE (DImode) (i.e. 64) made sense before
64-bitters. Now the default is just a trap: when using the
default 64, things like TImode (128 bits) still mostly works,
but general corner cases related to computing large-size objects
numbers, like (1 << 64)/8 break, as exposed by
gcc.dg/pr105094.c.
So, keep the floor at 64 for 32-bitters and smaller targets, but
for larger targets, make it 2 * BITS_PER_WORD. Also, express it
more directly with focus on BITS_PER_WORD, not the size of a
mode. Add "by GCC internally" in an attempt to tell that this
is when gcc cooks something up, not when plain input uses a type
with such a mode.
* defaults.h (MAX_FIXED_MODE_SIZE): Default to 2 * BITS_PER_WORD
for larger-than-32-bitters.
* doc/tm.texi.in (MAX_FIXED_MODE_SIZE): Adjust accordingly. Tweak
wording.
* doc/tm.texi: Regenerate.
Diffstat (limited to 'gcc/LANGUAGES')
0 files changed, 0 insertions, 0 deletions