public inbox for gcc-cvs@sourceware.org help / color / mirror / Atom feed
From: Michael Meissner <meissner@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/meissner/heads/work068)] Limit XXSPLTIDP for integer constants to 0x80000000. Date: Tue, 14 Sep 2021 17:04:35 +0000 (GMT) [thread overview] Message-ID: <20210914170435.1D7E23858402@sourceware.org> (raw) https://gcc.gnu.org/g:6284a86c207cba2f5b819cdecc8ad2bf63f10e5c commit 6284a86c207cba2f5b819cdecc8ad2bf63f10e5c Author: Michael Meissner <meissner@linux.ibm.com> Date: Tue Sep 14 13:04:14 2021 -0400 Limit XXSPLTIDP for integer constants to 0x80000000. 2021-09-14 Michael Meissner <meissner@linux.ibm.com> gcc/ * config/rs6000/predicates.md (easy_fp_constant_float_to_v2df): Limit XXSPLTIDP for integer constants to 0x80000000. Diff: --- gcc/config/rs6000/predicates.md | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md index 635a08ec8d6..edd64eab1e6 100644 --- a/gcc/config/rs6000/predicates.md +++ b/gcc/config/rs6000/predicates.md @@ -666,10 +666,16 @@ HOST_WIDE_INT df_value = INTVAL (element); long df_words[2]; +#if 0 /* Stay away from NaNs and denormal values. */ int exponent = (df_value >> 52) & 0x7ff; if (exponent == 0 || exponent == 0x7ff) return false; +#else + /* For now, only handle -0.0. */ + if (df_value != 0x80000000) + return false; +#endif df_words[0] = (df_value >> 32) & 0xffffffff; df_words[1] = df_value & 0xffffffff;
next reply other threads:[~2021-09-14 17:04 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-14 17:04 Michael Meissner [this message] 2021-09-14 17:05 Michael Meissner
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=20210914170435.1D7E23858402@sourceware.org \ --to=meissner@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).