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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/38644] [4.6 Regression] Optimization flag -O1
 -fschedule-insns2 causes wrong code
Date: Fri, 14 Oct 2022 09:57:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D38644

--- Comment #75 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Eric Botcazou
<ebotcazou@gcc.gnu.org>:

https://gcc.gnu.org/g:a5a6598d5b1d29741993371310c0bb8ca57e190c

commit r12-8831-ga5a6598d5b1d29741993371310c0bb8ca57e190c
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Fri Oct 14 11:52:04 2022 +0200

    Fix PR target/107248

    This is the infamous PR rtl-optimization/38644 rearing its ugly head for
    leaf functions on SPARC more than a decade later...  Richard E.'s gener=
ic
    solution has never been implemented so let's do as other RISC back-ends
did.

    gcc/
            PR target/107248
            * config/sparc/sparc.cc (sparc_expand_prologue): Emit a frame
            blockage for leaf functions.
            (sparc_flat_expand_prologue): Emit frame instead of full blocka=
ge.
            (sparc_expand_epilogue): Emit a frame blockage for leaf functio=
ns.
            (sparc_flat_expand_epilogue): Emit frame instead of full blocka=
ge.=