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From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106012] rsqrtps and rcpps instructiona generated even if -fno-reciprocal-math specified
Date: Sun, 19 Jun 2022 09:18:15 +0000 [thread overview]
Message-ID: <bug-106012-4-LS4FPtlLoi@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-106012-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106012
vincenzo Innocente <vincenzo.innocente at cern dot ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|rsqrtss instruction |rsqrtps and rcpps
|generated even if |instructiona generated even
|-mno-recip specified |if -fno-reciprocal-math
| |specified
Status|RESOLVED |NEW
Resolution|WONTFIX |---
--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
Thanks for the suggestion.
-fno-reciprocal-math does indeed inhibit scalar reciprocal instructions.
NOT in vectorized loop though.
see
https://godbolt.org/z/9eMb4Tjee
next prev parent reply other threads:[~2022-06-19 9:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-17 9:17 [Bug target/106012] New: rsqrtss instruction generated even if -mno-recip specified vincenzo.innocente at cern dot ch
2022-06-17 11:16 ` [Bug tree-optimization/106012] " ubizjak at gmail dot com
2022-06-18 20:20 ` pinskia at gcc dot gnu.org
2022-06-19 9:18 ` vincenzo.innocente at cern dot ch [this message]
2022-06-20 10:13 ` [Bug target/106012] rsqrtps and rcpps instructions generated even if -fno-reciprocal-math specified rguenth at gcc dot gnu.org
2022-06-20 10:15 ` rguenth at gcc dot gnu.org
2022-12-20 14:23 ` vincenzo.innocente at cern dot ch
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