public inbox for
 help / color / mirror / Atom feed
From: Aldy Hernandez <>
To: GCC patches <>
Cc: Andrew MacLeod <>, Aldy Hernandez <>
Subject: [COMMITTED] Normalize ranges over the range for both bounds when -ffinite-math-only.
Date: Fri, 14 Oct 2022 16:26:51 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

[-Inf, +Inf] was being chopped correctly for -ffinite-math-only, but
[-Inf, -Inf] was not.  This was latent because a bug in
real_isdenormal is causing us to flush -Inf to zero.


	* (frange::set): Normalize ranges for both bounds.
 gcc/ | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/ b/gcc/
index 86550f158b8..6b4f3dddcd5 100644
--- a/gcc/
+++ b/gcc/
@@ -340,8 +340,12 @@ frange::set (tree type,
       REAL_VALUE_TYPE max_repr = frange_val_max (m_type);
       if (real_less (&m_min, &min_repr))
 	m_min = min_repr;
+      else if (real_less (&max_repr, &m_min))
+	m_min = max_repr;
       if (real_less (&max_repr, &m_max))
 	m_max = max_repr;
+      else if (real_less (&m_max, &min_repr))
+	m_max = min_repr;
   // Check for swapped ranges.

  reply	other threads:[~2022-10-14 14:27 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-14 14:26 [COMMITTED] Drop -0.0 in frange::set() for !HONOR_SIGNED_ZEROS Aldy Hernandez
2022-10-14 14:26 ` Aldy Hernandez [this message]
2022-10-14 14:26 ` [COMMITTED] Replace CFN_BUILTIN_SIGNBIT* cases with CASE_FLT_FN Aldy Hernandez
2022-10-14 14:32 ` [COMMITTED] Drop -0.0 in frange::set() for !HONOR_SIGNED_ZEROS Jakub Jelinek
2022-10-14 14:53   ` Aldy Hernandez
2022-10-14 15:00     ` Jakub Jelinek
2022-10-14 15:06       ` Aldy Hernandez

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be 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).