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| author | David Young <dyoung@hdfgroup.org> | 2022-02-08 22:47:03 (GMT) |
|---|---|---|
| committer | David Young <dyoung@hdfgroup.org> | 2022-02-08 22:47:03 (GMT) |
| commit | 25eb313cb379da7d41fb1c604c0bcc2574bdd49a (patch) | |
| tree | 33fa686fe8f2eb25265c1e37635338d1bd404466 /java/src/hdf/hdf5lib/exceptions/HDF5FileInterfaceException.java | |
| parent | 36d9a165e428eb883f9fd72b6707555536292845 (diff) | |
| download | hdf5-25eb313cb379da7d41fb1c604c0bcc2574bdd49a.zip hdf5-25eb313cb379da7d41fb1c604c0bcc2574bdd49a.tar.gz hdf5-25eb313cb379da7d41fb1c604c0bcc2574bdd49a.tar.bz2 | |
Do not conditionally compile code that uses a pointer dereference
and assignment to copy a potentially unaligned variable to aligned
automatic storage, or vice versa. Instead, always use naked `memcpy(3)`s.
Disassembling the generated code reveals that the `memcpy(3)`s optimize
(`-O3`) to a single `mov` instruction for x86_64, which is not strict
about alignment.
This change reduces the size of code and scripts by 143 lines, eases
our way to cross-compilation, and avoids invoking undefined behavior.
Diffstat (limited to 'java/src/hdf/hdf5lib/exceptions/HDF5FileInterfaceException.java')
0 files changed, 0 insertions, 0 deletions