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<body><span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WinEHPrepare failed to demote instruction"
href="https://llvm.org/bugs/show_bug.cgi?id=23884">bug 23884</a>
<br>
<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>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WinEHPrepare failed to demote instruction"
href="https://llvm.org/bugs/show_bug.cgi?id=23884#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WinEHPrepare failed to demote instruction"
href="https://llvm.org/bugs/show_bug.cgi?id=23884">bug 23884</a>
from <span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span></b>
<pre>This works in the new approach to EH. This was the IR I used:
target triple = "x86_64-pc-windows-msvc"
declare i32 @__C_specific_handler(...)
declare void @bar()
declare void @baz()
declare void @free(i8*)
define void @foo() personality i32 (...)* @__C_specific_handler {
invoke void @baz()
to label %normal unwind label %unwind1
normal:
unreachable
unwind1:
%p = cleanuppad []
%rem = load i8*, i8** undef, align 8
invoke void @bar()
to label %normal unwind label %unwind2
unwind2:
%p2 = cleanuppad []
invoke void @baz()
to label %normal2 unwind label %unwind3
normal2:
call void @free(i8* %rem)
unreachable
unwind3:
%p3 = cleanuppad []
unreachable
}</pre>
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