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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion `CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!" after r260711"
href="https://llvm.org/bugs/show_bug.cgi?id=28879">28879</a>
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<th>Summary</th>
<td>Assertion `CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!" after r260711
</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>Wolfgang_Pieb@playstation.sony.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>; Running opt -gvn on the following module causes an assertion after
; r260711. Probably something to do with vector sizes < 1 byte.
; ModuleID = 'bugpoint-reduced-simplified.bc'
; Function Attrs: norecurse noreturn nounwind
define void @autogen_SD106151532() #0 {
BB:
%A4 = alloca <7 x i1>, align 2
store <7 x i1> undef, <7 x i1>* %A4, align 2
br label %CF829.preheader.split62
CF829.preheader.split62: ; preds = %BB
%0 = getelementptr inbounds <7 x i1>, <7 x i1>* %A4, i64 0, i64 0
%A4.0.A4.0.L865961 = load i1, i1* %0, align 2
br i1 %A4.0.A4.0.L865961, label %CF871.us.preheader, label %CF829.preheader
CF829.preheader: ; preds =
%CF829.preheader.split62
unreachable
CF871.us.preheader: ; preds =
%CF829.preheader.split62
unreachable
}
attributes #0 = { noreturn nounwind }
opt: /home/user/src/llvm/trunk/llvm/lib/IR/Constants.cpp:1533: static
llvm::Constant* llvm::ConstantExpr::getCast(unsigned int, llvm::Constant*,
llvm::Type*, bool): Assertion `CastInst::castIsValid(opc, C, Ty) && "Invalid
constantexpr cast!"' failed.</pre>
</div>
</p>
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