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PR 34548 * function.h (struct rtl_data): Add max_dynamic_stack_alignment. * cfgexpand.c (gimple_expand_cfg): Initialise it. * explow.c (allocate_dynamic_stack_space): Set it. Simplify alignment requirements given the known alignment of dynamic_offset. * function.c (instantiate_virtual_regs): Align dtnamic_offset. From-SVN: r190051
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