[Bug debug/105627] -fcompare-debug failure at -Og for powerpc64le-unknown-linux-gnu
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue May 24 06:08:58 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105627
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Kewen Lin <linkw@gcc.gnu.org>:
https://gcc.gnu.org/g:149d04ccbb908b3a251485b43faf204752942b9f
commit r13-720-g149d04ccbb908b3a251485b43faf204752942b9f
Author: Kewen Lin <linkw@linux.ibm.com>
Date: Tue May 24 01:00:22 2022 -0500
rs6000: Skip debug insns for union [PR105627]
As PR105627 exposes, pass analyze_swaps should skip debug
insn when doing unionfind_union. One debug insn can use
several pseudos, if we take debug insn into account, we can
union those insns defining them and generate some unexpected
unions.
Based on the assumption that it's impossible to have one
pseudo which is defined by one debug insn but is used by one
nondebug insn, we just asserts debug insn never shows up in
function union_defs.
PR target/105627
gcc/ChangeLog:
* config/rs6000/rs6000-p8swap.cc (union_defs): Assert def_insn
can't
be a debug insn.
(union_uses): Skip debug use_insn.
gcc/testsuite/ChangeLog:
* gcc.target/powerpc/pr105627.c: New test.
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