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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - static llvm::FixedVectorType *llvm::FixedVectorType::get(llvm::Type *, unsigned int): Assertion `NumElts > 0 && "#Elements of a VectorType must be greater than 0"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=50374">50374</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>static llvm::FixedVectorType *llvm::FixedVectorType::get(llvm::Type *, unsigned int): Assertion `NumElts > 0 && "#Elements of a VectorType must be greater than 0"' 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>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>benny.kra@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, pengfei.wang@intel.com, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>$ cat reduce.ll
define fastcc void
@wide.body_computation__18.1604.clone.clone.clone.clone.clone.clone()
unnamed_addr {
while.84.body.preheader:
%0 = load i8, i8* undef, align 1
%1 = load i8, i8* undef, align 4
%.not14.2.2 = icmp eq i8 0, 0
%2 = and i8 %0, 1
%.not14.1.2 = icmp eq i8 %2, 0
%3 = select i1 %.not14.2.2, i1 %.not14.1.2, i1 false
%.not14.2361 = icmp eq i8 0, 0
%4 = select i1 %3, i1 %.not14.2361, i1 false
%add.10961.i.2.2 = select reassoc nsz contract i1 %4, float 0.000000e+00,
float 0x7FF8000000000000
%broadcast.splatinsert2024 = insertelement <8 x float> poison, float
%add.10961.i.2.2, i32 0
%broadcast.splat2025 = shufflevector <8 x float> %broadcast.splatinsert2024,
<8 x float> poison, <8 x i32> zeroinitializer
%broadcast.splatinsert2049 = insertelement <8 x i8> poison, i8 %1, i32 0
%broadcast.splat2050 = shufflevector <8 x i8> %broadcast.splatinsert2049, <8
x i8> poison, <8 x i32> zeroinitializer
br label %vector.body1999
vector.body1999: ; preds = %vector.body1999,
%while.84.body.preheader
%predphi2026 = select <8 x i1> undef, <8 x float> undef, <8 x float>
%broadcast.splat2025
%predphi2051 = select <8 x i1> undef, <8 x i8> %broadcast.splat2050, <8 x i8>
undef
br label %vector.body1999
}
$ llc < reduced.ll -mcpu=skx
llc: llvm/lib/IR/Type.cpp:645: static llvm::FixedVectorType
*llvm::FixedVectorType::get(llvm::Type *, unsigned int): Assertion `NumElts > 0
&& "#Elements of a VectorType must be greater than 0"' failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace.
Stack dump:
0. Program arguments: llc -mcpu=skx
1. Running pass 'Function Pass Manager' on module '<stdin>'.
2. Running pass 'X86 DAG->DAG Instruction Selection' on function
'@wide.body_computation__18.1604.clone.clone.clone.clone.clone.clone'
The crashing code path was added in
<a href="https://github.com/llvm/llvm-project/commit/aa4afebbf90f1c0ec7853b95c108f9c363e226eb">https://github.com/llvm/llvm-project/commit/aa4afebbf90f1c0ec7853b95c108f9c363e226eb</a></pre>
</div>
</p>
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