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From: "juzhe.zhong at rivai dot ai" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109088] GCC does not always vectorize
 conditional reduction
Date: Wed, 15 Nov 2023 14:38:05 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109088

--- Comment #19 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
I have added:

+      if (!ANY_INTEGRAL_TYPE_P (TREE_TYPE (PHI_RESULT (phi)))
+         && !(FLOAT_TYPE_P (TREE_TYPE (PHI_RESULT (phi)))
+              && !HONOR_SIGNED_ZEROS (TREE_TYPE (PHI_RESULT (phi)))
+              && !HONOR_SIGN_DEPENDENT_ROUNDING (TREE_TYPE (PHI_RESULT (ph=
i)))
+              && !HONOR_NANS (TREE_TYPE (PHI_RESULT (phi)))))
+       return false;

for floating-point. I failed to see which situation will cause FP exception=
s ?=