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<body><span class="vcard"><a class="email" href="mailto:jeremy.morse.llvm@gmail.com" title="Jeremy Morse <jeremy.morse.llvm@gmail.com>"> <span class="fn">Jeremy Morse</span></a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo@O2][Dexter] Pointer variable location can be dropped despite being live"
href="https://bugs.llvm.org/show_bug.cgi?id=39726">bug 39726</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>CONFIRMED
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo@O2][Dexter] Pointer variable location can be dropped despite being live"
href="https://bugs.llvm.org/show_bug.cgi?id=39726#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo@O2][Dexter] Pointer variable location can be dropped despite being live"
href="https://bugs.llvm.org/show_bug.cgi?id=39726">bug 39726</a>
from <span class="vcard"><a class="email" href="mailto:jeremy.morse.llvm@gmail.com" title="Jeremy Morse <jeremy.morse.llvm@gmail.com>"> <span class="fn">Jeremy Morse</span></a>
</span></b>
<pre>Yikes, this bug description is hard to read. I must have been in too deep when
writing it,
As far as I understand it, my problem was that the pointer value for "qux" was
available, but we couldn't find the right SDNode when building a SelectionDAG
because it was on the other side of a needless BitCast. And for various reasons
at the time, SelectionDAG wouldn't create DBG_VALUEs for arbitary VRegs
Some time later this [0] landed, which refers to this PR. I've just given the
"reproducer" a few runs and couldn't make it drop "qux", so I think it's fair
to say it's fixed. Thanks for prodding!
[0] <a href="https://reviews.llvm.org/D56678">https://reviews.llvm.org/D56678</a></pre>
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