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<body><span class="vcard"><a class="email" href="mailto:sanjoy@playingwithpointers.com" title="Sanjoy Das <sanjoy@playingwithpointers.com>"> <span class="fn">Sanjoy Das</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Not aggressively optimizing std::fill loop (SCEVUDivExpr needs 'exact' bit)"
href="https://llvm.org/bugs/show_bug.cgi?id=8942">bug 8942</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;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Not aggressively optimizing std::fill loop (SCEVUDivExpr needs 'exact' bit)"
href="https://llvm.org/bugs/show_bug.cgi?id=8942#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Not aggressively optimizing std::fill loop (SCEVUDivExpr needs 'exact' bit)"
href="https://llvm.org/bugs/show_bug.cgi?id=8942">bug 8942</a>
from <span class="vcard"><a class="email" href="mailto:sanjoy@playingwithpointers.com" title="Sanjoy Das <sanjoy@playingwithpointers.com>"> <span class="fn">Sanjoy Das</span></a>
</span></b>
<pre>Looks like clang is able to optimize
void f1(int* begin, int* end) {
std::fill(begin, end, 0);
}
to a call to memset now.</pre>
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