re PR target/50906 (e500 exception unwinding under "-Os" causes SIGSEGV)
PR target/50906
* config/rs6000/rs6000.c (rs6000_emit_prologue <TARGET_SPE_ABI>):
Do not mark r11 setup as frame-related. Pass correct offset to
rs6000_emit_savres_rtx. Correct out-of-line rs6000_frame_related
arguments. Correct sp_offset. Remove "offset" fudge from
in-line rs6000_frame_related call. Rename misleading variable.
Fix comments and whitespace. Tidy some expressions.
(rs6000_emit_epilogue <TARGET_SPE_ABI>): Always set frame_reg_rtx
to r11 in out-of-line case. Correct sp_offset. Pass correct
offset to rs6000_emit_savres_rtx. Rename misleading variable.
Fix comments and whitespace. Tidy some expressions.
(rs6000_emit_epilogue <non-TARGET_SPE_ABI>): Add sp_offset
adjustment when !saving_GPRs_inline. Correct register mode
used in address calcs.
(rs6000_emit_epilogue <non-TARGET_SPE_ABI>): Similarly when
!restoring_GPRs_inline.
From-SVN: r182039