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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [AVX512] Cannot select: 0x7fd80b841b68: ch = store when returning <16 x i1> from function"
href="http://llvm.org/bugs/show_bug.cgi?id=20724">20724</a>
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<tr>
<th>Summary</th>
<td>[AVX512] Cannot select: 0x7fd80b841b68: ch = store when returning <16 x i1> from function
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>matt@pharr.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
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<pre>With top of tree and this program, I get the following crash:
; ModuleID = 'bugpoint-reduced-simplified.bc'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin13.3.0"
define <16 x i1> @crashEven___(i16 %__mask) {
allocas:
ret <16 x i1> zeroinitializer
}
% llc -mcpu=knl bugpoint-reduced-simplified.ll -filetype=asm -o -
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 13, 3
LLVM ERROR: Cannot select: 0x7fd80b841b68: ch = store 0x7fd80b841640,
0x7fd80b841118, 0x7fd80b841538, 0x7fd80b841a60<ST2[<unknown>](align=16)>
[ORD=2] [ID=11]
0x7fd80b841118: v16i1 = BUILD_VECTOR 0x7fd80b841010, 0x7fd80b841010,
0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010,
0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010,
0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010, 0x7fd80b841010 [ORD=2] [ID=8]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841010: i1 = TargetConstant<0> [ID=6]
0x7fd80b841538: i64 = Register %vreg3 [ID=3]
0x7fd80b841a60: i64 = undef [ID=4]
In function: crashEven___
%</pre>
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