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This allows copy_blkmode_to_reg to perform larger copies when it is safe to do so by calculating the bitsize per iteration doing the maximum copy allowed that does not read more than the amount of bits left to copy. Strictly speaking, this copying is only done if: 1. the target supports fast unaligned access 2. no padding is being used. This should avoid the issues of the first patch (PR85123) but still work for targets that are safe to do so. Original patch https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01088.html Previous respin https://gcc.gnu.org/ml/gcc-patches/2018-04/msg00239.html gcc/ 2018-08-16 Tamar Christina <tamar.christina@arm.com> * expr.c (copy_blkmode_to_reg): Perform larger copies when safe. From-SVN: r263594 |
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