This also affects gcc 7 and is fixed by the same patch. I've tested the backport to 7 on ppc64le and it causes no new fails. OK for backport to 7 (and 6 if it's also needed there)?
Thanks, Aaron On Fri, 2018-04-13 at 15:37 -0500, Aaron Sawdey wrote: > Per the discussion on the 83660, I've come to a minimal patch to > prevent this. Basically marking the vec_extract tree as having side > effects later makes sure that it gets all the cleanup points it needs > so that gimplify_cleanup_point_expr () is happy. Also because > vec_insert puts a MODIFY_EXPR in there, it has side effects and this > problem will not occur. > > Doing bootstrap/regtest on ppc64le with -mcpu=power7 since that is > where this issue arises. OK for trunk if everything passes? > > Thanks, > Aaron > > > 2018-04-13 Aaron Sawdey <acsaw...@linux.ibm.com> > > PR target/83660 > * config/rs6000/rs6000-c.c > (altivec_resolve_overloaded_builtin): Mark > vec_extract expression as having side effects to make sure it > gets > a cleanup point. > > 2018-04-13 Aaron Sawdey <acsaw...@linux.ibm.com> > > PR target/83660 > * gcc.target/powerpc/pr83660.C: New test. > -- Aaron Sawdey, Ph.D. acsaw...@linux.vnet.ibm.com 050-2/C113 (507) 253-7520 home: 507/263-0782 IBM Linux Technology Center - PPC Toolchain
