alpha.c (alpha_expand_prologue, [...]): New fns.
* alpha.c (alpha_expand_prologue, alpha_expand_epilogue): New fns.
(output_prologue, output_epilogue): Merge VMS and OSF versions;
Remove anything related to the actual code generation.
(output_end_prologue): New function.
(alpha_sa_mask, alpha_sa_size): Merge VMS and OSF versions.
(alpha_does_function_need_gp): Return false for VMS.
(alpha_function_needs_gp): Make static.
(add_long_const): Delete.
(summarize_insn): Don't assume a SUBREG is of a REG.
Prototype all static functions. Rename VMS-specific global
variables vms_*.
* alpha.h (TARGET_CAN_FAULT_IN_PROLOGUE): Default to 0.
(FUNCTION_BOUNDARY): Align to cache line.
(LOOP_ALIGN, ALIGN_LABEL_AFTER_BARRIER): Align to octaword.
(FUNCTION_END_PROLOGUE): New macro.
* alpha.md (attribute length): New. Mark all insns.
(return_internal, prologue_stack_probe_loop) New patterns.
(prologue, init_fp, epilogue): New patterns.
Disable peepholes.
* linux.h (TARGET_CAN_FAULT_IN_PROLOGUE): Define.
From-SVN: r20528