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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/96072] [10/11/12 Regression] ICE: Segmentation fault (in
 add_reg_note)
Date: Mon, 26 Sep 2022 05:34:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96072

--- Comment #8 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:5be0950d22209f5ba69d244387228e12389a8470

commit r13-2846-g5be0950d22209f5ba69d244387228e12389a8470
Author: Kewen Lin <linkw@linux.ibm.com>
Date:   Mon Sep 26 00:33:18 2022 -0500

    rs6000: Fix the condition with frame_pointer_needed_indeed [PR96072]

    As PR96072 shows, the code adding REG_CFA_DEF_CFA reg note
    makes one assumption that we have emitted one insn which
    restores the frame pointer previously.  That part of code
    was guarded with flag frame_pointer_needed before, it was
    consistent, but it was replaced with flag
    frame_pointer_needed_indeed since commit r10-7981.  It
    caused ICE due to unexpected NULL insn.

            PR target/96072

    gcc/ChangeLog:

            * config/rs6000/rs6000-logue.cc (rs6000_emit_epilogue): Update =
the
            condition for adding REG_CFA_DEF_CFA reg note with
            frame_pointer_needed_indeed.

    gcc/testsuite/ChangeLog:

            * gcc.target/powerpc/pr96072.c: New test.=