[PATCH] Fix rtl sharing bug in rs6000_frame_related (PR target/78614)
Alan Modra
amodra@gmail.com
Thu Dec 1 02:06:00 GMT 2016
On Wed, Nov 30, 2016 at 11:27:40PM +0100, Jakub Jelinek wrote:
> Markus said he has bootstrapped this patch with rtl checking on powerpc64.
I repeated the exercise and found a stage1 bootstrap failure due to
invalid rtl sharing on powerpc64le-linux, using
AS="/home/amodra/gnu/bin/as" LD="/home/amodra/gnu/bin/ld" \
~/src/gcc-pr78614/configure \
--build=powerpc64le-linux --prefix=/home/amodra/gnu \
--enable-targets=powerpc64-linux,powerpc-linux,powerpcle-linux --disable-multilib \
--enable-valgrind-annotations \
--disable-nls --with-cpu=power8 --enable-languages=all,go --enable-lto \
--enable-checking=yes,rtl
> 2016-11-30 Jakub Jelinek <jakub@redhat.com>
>
> PR target/78614
> * config/rs6000/rs6000.c (rs6000_frame_related): Call
> set_used_flags (pat) before any simplifications. Clear used flag on
> PARALLEL copy. Don't guard add_reg_note call. Call
> copy_rtx_if_shared on pat before storing it into
> REG_FRAME_RELATED_EXPR.
--
Alan Modra
Australia Development Lab, IBM
More information about the Gcc-patches
mailing list