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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [LIR] Misses opportunity to convert malloc + memset zero -> calloc"
href="https://llvm.org/bugs/show_bug.cgi?id=25892">25892</a>
</td>
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<tr>
<th>Summary</th>
<td>[LIR] Misses opportunity to convert malloc + memset zero -> calloc
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Loop Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mcrosier@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>#include <stdlib.h>
#include <stdio.h>
#include <string.h>
float *foo(int size) {
float *fdata;
fdata = (float *) malloc(size);
if (fdata == NULL) {
fprintf(stderr, "Can't allocate data array.\n");
exit(1);
}
memset(fdata, 0, size);
return fdata;
}
We should be able to convert the malloc into a calloc and remove the memset.</pre>
</div>
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