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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [WinEH] LoopStrengthReduce crashes in the presence of catchpads w/ phis"
href="https://llvm.org/bugs/show_bug.cgi?id=25445">25445</a>
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<th>Summary</th>
<td>[WinEH] LoopStrengthReduce crashes in the presence of catchpads w/ phis
</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>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.com
</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>consider:
void f(int *);
void g(int *b, int *c) {
int *e = b;
try {
try {
int *d = b;
for (;; ++d) f(d);
} catch (...) {
}
e = c;
f(c);
} catch (...) {
f(e);
}
}
reproduces with:
clang -cc1 -triple i686-pc-windows-msvc18.0.0 -emit-obj -fcxx-exceptions
-fexceptions -O2
crashes in:
LoopStrengthReduce.cpp:4425: BasicBlock::iterator <anonymous
namespace>::LSRInstance::AdjustInsertPositionForExpand(BasicBlock::iterator,
const <anonymous>::LSRFixup &, const <anonymous>::LSRUse &, llvm::SCEVExpander
&) const: Assertion `!isa<PHINode>(LowestIP) && !LowestIP->isEHPad() &&
!isa<DbgInfoIntrinsic>(LowestIP) && "Insertion point must be a normal
instruction"' failed.</pre>
</div>
</p>
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