http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46030
--- Comment #3 from Alan Modra <amodra at gcc dot gnu.org> 2011-02-15 02:33:37 UTC --- Author: amodra Date: Tue Feb 15 02:33:33 2011 New Revision: 170165 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170165 Log: Backport from mainline 2010-11-01 Alan Modra <amo...@gmail.com> PR target/46030 * config/rs6000/rs6000.c (struct rs6000_stack): Add reload_completed and savres_strategy. (stack_info): New file scope var. (rs6000_init_machine_status): Init stack_info. (SAVRES_INLINE_FPRS, SAVRES_INLINE_GPRS, SAVRES_NOINLINE_GPRS_SAVES_LR, SAVRES_NOINLINE_FPRS_SAVES_LR, SAVRES_NOINLINE_FPRS_DOESNT_RESTORE_LR): Replace with.. (SAVE_INLINE_FPRS, SAVE_INLINE_GPRS, REST_INLINE_FPRS, REST_INLINE_GPRS, SAVE_NOINLINE_GPRS_SAVES_LR, SAVE_NOINLINE_FPRS_SAVES_LR REST_NOINLINE_FPRS_DOESNT_RESTORE_LR): ..this. Update all refs. (rs6000_savres_strategy): Rewrite. (rs6000_stack_info): Use "stack_info" in place of local "info". Return cached stack info when reload_completed unless ENABLE_CHECKING in which case confirm newly calculated stack info matches old info. Delay calculation of lr_save_p, set it for out of line gp save/restore as well as fp. Call rs6000_savres_strategy from here.. (rs6000_emit_prologue, rs6000_emit_epilogue): ..rather than here. (rs6000_output_function_prologue): Use info->savres_strategy to determine whether fp save/restore externs need to be emitted. Modified: branches/ibm/gcc-4_5-branch/gcc/ChangeLog.ibm branches/ibm/gcc-4_5-branch/gcc/config/rs6000/rs6000.c
