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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [InsnCombine] (fptrunc (floor x)) -> (floor (fptrunc x))"
href="https://bugs.llvm.org/show_bug.cgi?id=32386">32386</a>
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<th>Summary</th>
<td>[InsnCombine] (fptrunc (floor x)) -> (floor (fptrunc x))
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>shiva0217@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The test case fail due to instruction combine cast from floor to floorf
which make precision lost and get wrong floor value.
double d = 1024.0 - 1.0 / 32768.0;
extern double floor(double);
extern float floorf(float);
extern void abort();
int main() {
float f1 = (float)floor(d);
if ((int)f1 != 1023)
abort ();
return 0;
}</pre>
</div>
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