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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - After r343028, Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast, file include/llvm/Support/Casting.h, line 255."
href="https://bugs.llvm.org/show_bug.cgi?id=41117">41117</a>
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<th>Summary</th>
<td>After r343028, Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast, file include/llvm/Support/Casting.h, line 255.
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dimitry@andric.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>As described in <a href="https://bugs.freebsd.org/236566">https://bugs.freebsd.org/236566</a>, compiling the FreeBSD
java/openjdk8 port for armv7 or aarch64 asserts with:
Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"),
function cast, file include/llvm/Support/Casting.h, line 255.
Bisection shows this started occurring after <a href="https://reviews.llvm.org/rL343028">https://reviews.llvm.org/rL343028</a>
("[LV][LAA] Vectorize loop invariant values stored into loop invariant
address").
Minimized test case:
// clang -cc1 -triple aarch64-- -S -fno-delete-null-pointer-checks -O2
-vectorize-loops instanceKlass-min.cpp
void *a;
struct d {
template <class c> c *g(int) const;
};
struct i {
int e;
template <class c> void f(c *);
};
struct l {
int count() { return h; }
int h;
};
int j;
template <class c> c *d::g(int) const {
a = &((char *)0)[j];
return (c *)a;
}
template <class c> void i::f(c *) { e = 0; }
d k;
void p() {
i *b = 0;
l *m = 0;
l n;
while (m < &n) {
unsigned *o(k.g<unsigned>(0));
unsigned *c = o + m->count();
while (o < c) {
b->f(o);
++o;
}
++m;
}
}</pre>
</div>
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