public inbox for gcc-cvs@sourceware.org help / color / mirror / Atom feed
From: Jakub Jelinek <jakub@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r9-10151] sparc: Preserve ORIGINAL_REGNO in epilogue_renumber [PR105257] Date: Wed, 11 May 2022 06:26:46 +0000 (GMT) [thread overview] Message-ID: <20220511062646.A4B6A3856240@sourceware.org> (raw) https://gcc.gnu.org/g:4f18893fbd53205588c952856184367671b2a880 commit r9-10151-g4f18893fbd53205588c952856184367671b2a880 Author: Jakub Jelinek <jakub@redhat.com> Date: Tue Apr 19 18:58:59 2022 +0200 sparc: Preserve ORIGINAL_REGNO in epilogue_renumber [PR105257] The following testcase ICEs, because the pic register is (reg:DI 24 %i0 [109]) and is used in the delay slot of a return. We invoke epilogue_renumber and that changes it to (reg:DI 8 %o0) which no longer satisfies sparc_pic_register_p predicate, so we don't recognize the insn anymore. The following patch fixes that by preserving ORIGINAL_REGNO if specified, so we get (reg:DI 8 %o0 [109]) instead. 2022-04-19 Jakub Jelinek <jakub@redhat.com> PR target/105257 * config/sparc/sparc.c (epilogue_renumber): If ORIGINAL_REGNO, use gen_raw_REG instead of gen_rtx_REG and copy over also ORIGINAL_REGNO. Use return 0; instead of /* fallthrough */. * gcc.dg/pr105257.c: New test. (cherry picked from commit eeca2b8bd03f57c59c6cf48bf6b9bd6dc86924f6) Diff: --- gcc/config/sparc/sparc.c | 16 ++++++++++++++-- gcc/testsuite/gcc.dg/pr105257.c | 16 ++++++++++++++++ 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 6f7f3cba773..69ac39e2fb4 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -8883,8 +8883,20 @@ epilogue_renumber (register rtx *where, int test) if (REGNO (*where) >= 8 && REGNO (*where) < 24) /* oX or lX */ return 1; if (! test && REGNO (*where) >= 24 && REGNO (*where) < 32) - *where = gen_rtx_REG (GET_MODE (*where), OUTGOING_REGNO (REGNO(*where))); - /* fallthrough */ + { + if (ORIGINAL_REGNO (*where)) + { + rtx n = gen_raw_REG (GET_MODE (*where), + OUTGOING_REGNO (REGNO (*where))); + ORIGINAL_REGNO (n) = ORIGINAL_REGNO (*where); + *where = n; + } + else + *where = gen_rtx_REG (GET_MODE (*where), + OUTGOING_REGNO (REGNO (*where))); + } + return 0; + case SCRATCH: case CC0: case PC: diff --git a/gcc/testsuite/gcc.dg/pr105257.c b/gcc/testsuite/gcc.dg/pr105257.c new file mode 100644 index 00000000000..4232942d791 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr105257.c @@ -0,0 +1,16 @@ +/* PR target/105257 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +/* { dg-additional-options "-fpic" { target fpic } } */ + +extern int sigsetjmp (void **, int); +void *buf[32]; +void (*fn) (void); + +const char * +bar (void) +{ + sigsetjmp (buf, 0); + fn (); + return ""; +}
reply other threads:[~2022-05-11 6:26 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20220511062646.A4B6A3856240@sourceware.org \ --to=jakub@gcc.gnu.org \ --cc=gcc-cvs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).