Re: backport r151691 and r151729 to gcc-4.4 branch

[David Edelsohn <dje dot gcc at gmail dot com>]

Alan,

The patch is a little larger and more invasive than I would like at
this stage in GCC 4.4 release cycle.  Is this really better than
directing users at GCC 4.5?

Thanks, David

On Mon, May 31, 2010 at 3:12 AM, Alan Modra <amodra@gmail.com> wrote:
> Hi David,
> ?I'd like to apply a backport of these fixes to the 4.4 branch.
> Cures 113 gcc testsuite failures. ?Bootstrapped etc. powerpc-linux.
>
> Index: gcc/ChangeLog
> ===================================================================
> --- gcc/ChangeLog ? ? ? (revision 160024)
> +++ gcc/ChangeLog ? ? ? (working copy)
> @@ -1,3 +1,66 @@
> +2010-05-31 ?Nathan Froyd ?<froydnj@codesourcery.com>
> + ? ? ? ? ? Jakub Jelinek ?<jakub@redhat.com>
> +
> + ? ? ? PR target/41175
> + ? ? ? PR target/40677
> + ? ? ? * config/rs6000/rs6000.c (no_global_regs_above): Fix precedence
> + ? ? ? problem.
> + ? ? ? (SAVRES_NOINLINE_GPRS_SAVES_LR, SAVRES_NOINLINE_FPRS_SAVES_LR,
> + ? ? ? SAVRES_NOINLINE_FPRS_DOESNT_RESTORE_LR): New strategy bits.
> + ? ? ? (rs6000_savres_strategy): Always save FP registers inline if the
> + ? ? ? target doesn't support hardware double-precision. ?Set the above
> + ? ? ? bits in return value when needed.
> + ? ? ? (rs6000_savres_routine_sym): Fix computation for cache selector.
> + ? ? ? Mark the generated symbol as a function. ?Rename exitp argument to
> + ? ? ? lr. ?Move code for determining the name of the symbol...
> + ? ? ? (rs6000_savres_routine_name): ...here. ?New function. ?Add cases for
> + ? ? ? getting the names right on AIX and 64-bit Linux.
> + ? ? ? (savres_routine_name): New variable.
> + ? ? ? (rs6000_make_savres_rtx): Rename exitp argument to lr. ?Don't assert
> + ? ? ? lr isn't set when savep. ?Use r12 resp. r1 instead of r11 depending
> + ? ? ? on what the target routine uses as a base register. ?If savep && lr
> + ? ? ? describe saving of r0 into memory slot.
> + ? ? ? (rs6000_emit_prologue): Correct use of call_used_regs. ?Fix out of
> + ? ? ? line calls for AIX ABI.
> + ? ? ? (rs6000_output_function_prologue): Use rs6000_savres_routine_name to
> + ? ? ? determine FP save/restore functions.
> + ? ? ? (rs6000_emit_stack_reset): Handle savres if sp_offset != 0 and
> + ? ? ? frame_reg_rtx != sp_reg_rtx. ?Use gen_add3_insn instead of
> + ? ? ? gen_addsi3.
> + ? ? ? (rs6000_emit_epilogue): Adjust computation of restore_lr.
> + ? ? ? Duplicate restoration of LR and execute the appropriate one
> + ? ? ? depending on whether GPRs are being restored inline. ?Set r11 from
> + ? ? ? offsetted frame_reg_rtx instead of sp_reg_rtx; if frame_reg_rtx is
> + ? ? ? r11, adjust sp_offset. ?Use gen_add3_insn instead of gen_addsi3.
> + ? ? ? Fix out of line calls for AIX ABI.
> + ? ? ? * config/rs6000/rs6000.md (*return_and_restore_fpregs_aix_<mode>):
> + ? ? ? New insn.
> + ? ? ? * config/rs6000/spe.md (*save_gpregs_spe): Use explicit match for
> + ? ? ? register 11.
> + ? ? ? (*restore_gpregs_spe): Likewise.
> + ? ? ? (*return_and_restore_gpregs_spe): Likewise.
> + ? ? ? * config/rs6000/linux64.h (SAVE_FP_SUFFIX, RESTORE_FP_SUFFIX):
> + ? ? ? Define to empty string unconditionally.
> + ? ? ? * config/rs6000/sysv4.h (SAVE_FP_SUFFIX, RESTORE_FP_SUFFIX):
> + ? ? ? Define to empty string unconditionally.
> + ? ? ? (GP_SAVE_INLINE, FP_SAVE_INLINE): Handle TARGET_64BIT the same as
> + ? ? ? !TARGET_64BIT.
> +
> +2010-05-31 ?Michael Meissner ?<meissner@linux.vnet.ibm.com>
> +
> + ? ? ? PR target/41331
> + ? ? ? * config/rs6000/rs6000.c (rs6000_emit_move): Use gen_add3_insn
> + ? ? ? instead of explicit addsi3/adddi3 calls.
> + ? ? ? (rs6000_split_multireg_move): Ditto.
> + ? ? ? (rs6000_emit_allocate_stack): Ditto.
> + ? ? ? (rs6000_emit_prologue): Ditto.
> + ? ? ? (rs6000_output_mi_thunk): Ditto.
> +
> +2010-05-31 ?Alan Modra ?<amodra@bigpond.net.au>
> +
> + ? ? ? * config/rs6000/rs6000.c (rs6000_emit_stack_reset): Delete redundant
> + ? ? ? rs6000_emit_stack_tie.
> +
> ?2010-05-28 ?Andreas Krebbel ?<Andreas.Krebbel@de.ibm.com>
>
> ? ? ? ?* config/s390/s390.md (movqi): Fix typo ('*' -> '#').
> Index: gcc/testsuite/ChangeLog
> ===================================================================
> --- gcc/testsuite/ChangeLog ? ? (revision 160024)
> +++ gcc/testsuite/ChangeLog ? ? (working copy)
> @@ -1,3 +1,9 @@
> +2010-05-31 ?Nathan Froyd ?<froydnj@codesourcery.com>
> + ? ? ? ? ? Jakub Jelinek ?<jakub@redhat.com>
> +
> + ? ? ? PR target/41175
> + ? ? ? * gcc.target/powerpc/pr41175.c: New test.
> +
> ?2010-05-27 ?Jason Merrill ?<jason@redhat.com>