<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NewGVN/PredicateInfo] Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=34052">34052</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[NewGVN/PredicateInfo] Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' 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>All
</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>davide@freebsd.org
</td>
</tr>
<tr>
<th>CC</th>
<td>dberlin@dberlin.org, joerg@NetBSD.org, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Joerg ran a full package run on NetBSD (with NewGVN) and that resulted in a
series of crashes. This one is the first, in the objective-c runtime.
I reduced it to the following:
$ ./opt -newgvn tinky.ll
opt: ../include/llvm/Support/Casting.h:255: typename llvm::cast_retty<X,
Y*>::ret_type llvm::cast(Y*) [with X = llvm::Function; Y = llvm::Constant;
typename llvm::cast_retty<X, Y*>::ret_type = llvm::Function*]: Assertion
`isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
$ cat tinky.ll
%0 = type opaque
%2 = type opaque
define void @patatino() {
entry:
%call10 = call %0* bitcast (i8* (i8*, ...)* @objc_msgSend to %0* (i8*)*)(i8*
null)
%cmp11 = icmp eq %0* %call10, null
br i1 %cmp11, label %if.end14, label %if.end14.thread
if.end14.thread:
%tmp = bitcast %0* %call10 to i8*
ret void
if.end14:
ret void
}
declare i8* @objc_msgSend(i8*, ...)
declare %2* @llvm.ssa.copy.p0s_s(%2* returned)</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>