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* function.c (STACK_ALIGNMENT_NEEDED): New macro. Default to 1. (assign_stack_local_1): Perform overall stack alignment only when STACK_ALIGNMENT_NEEDED is non-zero. * doc/tm.texi (STACK_ALIGNMENT_NEEDED): Document. * pa.c (compute_frame_size): Rename fsize to size. Account for alignment to a word boundary before general register save block. Only account for double-word alignment before floating point register save block if one or more are saved. Don't allocate space for %r3 when frame pointer is needed. (hppa_expand_prologue): Include alignment to word boundary in local frame size. * pa.h (STARTING_FRAME_OFFSET): Define to 8 on both 32 and 64-bit ports. (STACK_ALIGNMENT_NEEDED): Define. From-SVN: r63771
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