https://bugs.llvm.org/show_bug.cgi?id=41117
Bug ID: 41117
Summary: After r343028, Assertion failed: (isa<X>(Val) &&
"cast<Ty>() argument of incompatible type!"), function
cast, file include/llvm/Support/Casting.h, line 255.
Product: new-bugs
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
As described in https://bugs.freebsd.org/236566, 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 https://reviews.llvm.org/rL343028
("[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;
}
}
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