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<body><span class="vcard"><a class="email" href="mailto:andrew.kaylor@intel.com" title="Andy Kaylor <andrew.kaylor@intel.com>"> <span class="fn">Andy Kaylor</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Clang ignores NANs with -ffast-math and -fhonor-nans (or -fno-finite-math-only)"
href="https://bugs.llvm.org/show_bug.cgi?id=33510">bug 33510</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr>
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<td style="text-align:right;">CC</td>
<td>
</td>
<td>andrew.kaylor@intel.com
</td>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Clang ignores NANs with -ffast-math and -fhonor-nans (or -fno-finite-math-only)"
href="https://bugs.llvm.org/show_bug.cgi?id=33510#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Clang ignores NANs with -ffast-math and -fhonor-nans (or -fno-finite-math-only)"
href="https://bugs.llvm.org/show_bug.cgi?id=33510">bug 33510</a>
from <span class="vcard"><a class="email" href="mailto:andrew.kaylor@intel.com" title="Andy Kaylor <andrew.kaylor@intel.com>"> <span class="fn">Andy Kaylor</span></a>
</span></b>
<pre>I came across this while looking for something else. All the issues here seem
to be fixed.
clang -O2 -ffast-math -fhonor-nans
define dso_local i32 @testfunc(float %0) local_unnamed_addr #0 {
%2 = fcmp reassoc ninf nsz arcp contract afn ord float %0, 0.000000e+00
%3 = zext i1 %2 to i32
ret i32 %3
}
attributes #0 = { mustprogress nofree norecurse nosync nounwind readnone
uwtable willreturn "approx-func-fp-math"="true"
"denormal-fp-math"="preserve-sign,preserve-sign"
"denormal-fp-math-f32"="ieee,ieee" "frame-pointer"="none"
"min-legal-vector-width"="0" "no-infs-fp-math"="true"
"no-signed-zeros-fp-math"="true" "no-trapping-math"="true"
"stack-protector-buffer-size"="8" "target-cpu"="x86-64"
"target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic"
"unsafe-fp-math"="true" }
Similarly correct for other combinations of flags.</pre>
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