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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - 878a24ee244a causes assertions with vector floats"
href="https://bugs.llvm.org/show_bug.cgi?id=45299">45299</a>
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<th>Summary</th>
<td>878a24ee244a causes assertions with vector floats
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>smeenai@fb.com
</td>
</tr>
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<th>CC</th>
<td>elizabeth.andrews@intel.com, erich.keane@intel.com, gribozavr@gmail.com, llvm-bugs@lists.llvm.org, melanie.blower@intel.com, neeilans@live.com, richard-llvm@metafoo.co.uk, rnk@google.com
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<p>
<div>
<pre>$ cat reduced.cpp
typedef float float4 __attribute__((vector_size(16)));
template <typename T>
class C {
float4 f(float4 x) {
return k * x;
}
float k;
};
$ clang -cc1 -emit-llvm -o /dev/null reduced.cpp
clang: /home/smeenai/llvm-project/clang/lib/AST/ExprConstant.cpp:13547: bool
clang::Expr::EvaluateAsFloat(llvm::APFloat &, const clang::ASTContext &,
clang::Expr::SideEffectsKind, bool) const: Assertion `!isValueDependent() &&
"Expression evaluator can't be called on a dependent expression."' failed.
This was broken by 878a24ee244a and is still broken on master. Note that clang
would previously choke on a slightly more complex version of the same code
anyway though: <a class="bz_bug_link
bz_status_NEW "
title="NEW - r361050 causes assertions with vector floats"
href="show_bug.cgi?id=45298">https://bugs.llvm.org/show_bug.cgi?id=45298</a></pre>
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