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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NewGVN] Assertion `BeforeCC->isEquivalentTo(AfterCC) && "Value number changed after main loop completed!"' failed"
href="https://bugs.llvm.org/show_bug.cgi?id=34135">34135</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[NewGVN] Assertion `BeforeCC->isEquivalentTo(AfterCC) && "Value number changed after main loop completed!"' failed
</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>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mcrosier@codeaurora.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>test.cpp:
template <class E> class A {
public:
E* ep;
void add(const E& e);
};
class OJ;
typedef OJ* OJpt;
typedef OJpt* OJppt;
class OJ {
public:
signed int m;
A <OJpt> nb1ar;
};
class foo {
void test();
public:
OJppt regionp;
inline OJpt& regp(signed int x, signed int y) {
return regionp[x+y*sizex];
}
signed int maxx,maxy;
signed int sizex,sizey;
};
void foo::test() {
signed int x,y,x1,y1;
OJpt regionp,region2p;
for (y=1; y<=maxy-1; y++)
for (x=1; x<=maxx-1; x++) {
for (y1=y-1; y1<=y+1; y1++)
for (x1=x-1; x1<=x+1; x1++) {
region2p=regp(x1,y1);
if (region2p)
if (regionp!=region2p) {
region2p->nb1ar.add(regionp);
}
}
}
}
Reproduce with:
clang -O2 -mllvm -enable-newgvn ./test.cpp</pre>
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