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<body><span class="vcard"><a class="email" href="mailto:aprantl@apple.com" title="Adrian Prantl <aprantl@apple.com>"> <span class="fn">Adrian Prantl</span></a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - DBG_VALUE is accidentally promoted to location for the entire function"
href="https://llvm.org/bugs/show_bug.cgi?id=26585">bug 26585</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</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 - DBG_VALUE is accidentally promoted to location for the entire function"
href="https://llvm.org/bugs/show_bug.cgi?id=26585#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - DBG_VALUE is accidentally promoted to location for the entire function"
href="https://llvm.org/bugs/show_bug.cgi?id=26585">bug 26585</a>
from <span class="vcard"><a class="email" href="mailto:aprantl@apple.com" title="Adrian Prantl <aprantl@apple.com>"> <span class="fn">Adrian Prantl</span></a>
</span></b>
<pre>Fixed in r262247:
Author: Adrian Prantl <<a href="mailto:aprantl@apple.com">aprantl@apple.com</a>>
Date: Mon Feb 29 11:53:22 2016 -0800
Fix PR26585 by improving the promotion of DBG_VALUEs to DW_AT_locations.
When a variable is described by a single DBG_VALUE instruction we can
often use a more efficient inline DW_AT_location instead of using a
location list.
This commit makes the heuristic that decides when to apply this
optimization stricter by also verifying that the DBG_VALUE is live at the
entry of the function (instead of just checking that it is valid until
the end of the function).
<rdar://problem/24611008></pre>
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