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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - "Part type doesn't match vector breakdown!" assertion when mixing SIMD and MIPS"
href="https://bugs.llvm.org/show_bug.cgi?id=33883">33883</a>
</td>
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<th>Summary</th>
<td>"Part type doesn't match vector breakdown!" assertion when mixing SIMD and MIPS
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>5.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: MIPS
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alex@crichton.co
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>In trying to upgrade rust-lang/rust to LLVM 5.0 we've discovered that one of
our tests is failing, namely this IR:
; ModuleID = 'simd.cgu-0.rs'
source_filename = "simd.cgu-0.rs"
target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64"
target triple = "mips-unknown-linux-gnu"
; simd::foo
; Function Attrs: uwtable
define <4 x float> @_ZN4simd3foo17hebb969c5fb39a194E(<4 x float>) unnamed_addr
#0 {
start:
%1 = call <4 x float> @llvm.sqrt.v4f32(<4 x float> %0)
br label %bb1
bb1: ; preds = %start
ret <4 x float> %1
}
; simd::bar
; Function Attrs: uwtable
define <4 x i32> @_ZN4simd3bar17hdc8ee07458cf8c7bE(<4 x i32>, <4 x i32>)
unnamed_addr #0 {
start:
%2 = call <4 x i32> @integer(<4 x i32> %0, <4 x i32> %1)
br label %bb1
bb1: ; preds = %start
ret <4 x i32> %2
}
; Function Attrs: nounwind readnone speculatable
declare <4 x float> @llvm.sqrt.v4f32(<4 x float>) unnamed_addr #1
; Function Attrs: nounwind
declare <4 x i32> @integer(<4 x i32>, <4 x i32>) unnamed_addr #2
attributes #0 = { uwtable }
attributes #1 = { nounwind readnone speculatable }
attributes #2 = { nounwind }
when compiled with `llc -filetype=obj -mtriple=mips-unknown-linux-gnu foo.ll`
will fail with
llc:
/home/alex/code/rust3/src/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:616:
void getCopyToPartsVector(llvm::SelectionDAG&, const llvm::SDLoc&,
llvm::SDValue, llvm::SDValue*, unsigned int, llvm::MVT, const llvm::Value*,
bool): Assertion `RegisterVT == PartVT && "Part type doesn't match vector
breakdown!"' failed.
and this stack trace:
<a href="https://gist.github.com/alexcrichton/4697cc30fdb94c56a480e1d2c2952479">https://gist.github.com/alexcrichton/4697cc30fdb94c56a480e1d2c2952479</a></pre>
</div>
</p>
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