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The big-endian _BitInt support in libgcc was written without any testing and so I haven't discovered I've made one mistake in it (in multiple places). The bitint_reduce_prec function attempts to optimize inputs which have some larger precision but at runtime they are found to need smaller number of limbs. For little-endian that is handled just by returning smaller precision (or negative precision for signed), but for big-endian we need to adjust the passed in limb pointer so that when it returns smaller precision the argument still contains the least significant limbs for the returned precision. 2025-05-20 Jakub Jelinek <jakub@redhat.com> * libgcc2.c (bitint_reduce_prec): For big endian __LIBGCC_BITINT_ORDER__ use ++*p and --*p instead of ++p and --p. * soft-fp/bitint.h (bitint_reduce_prec): Likewise.
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