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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] Using _mm512_maskz_set1_epi64 on a 32-bit build causes cannot select intrinsic error"
href="https://bugs.llvm.org/show_bug.cgi?id=34631">34631</a>
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<th>Summary</th>
<td>[X86] Using _mm512_maskz_set1_epi64 on a 32-bit build causes cannot select intrinsic error
</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>All
</td>
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<th>OS</th>
<td>All
</td>
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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>Headers
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>craig.topper@gmail.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>This intrinsic is currently implemented in clang by selecting between two
different builtins, __builtin_ia32_pbroadcastq512_gpr_mask(64-bit) and
__builtin_ia32_pbroadcastq512_mem_mask(32-bit).
But it seems __builtin_ia32_pbroadcastq512_mem_mask was never implemented in
the X86 backend. So using it just causes an isel error. And worse, on a debug
build it hits an llvm_unreachable trying to expand a 64-bit operand on an
intrinsic.
Test case
#include <x86intrin.h>
__m512i test_mm512_maskz_set1_epi64 (__mmask8 __M, long long __A)
{
//CHECK-LABEL: @test_mm512_maskz_set1_epi64
//CHECK: @llvm.x86.avx512.mask.pbroadcast.q.gpr.512
return _mm512_maskz_set1_epi64 (__M, __A);
}</pre>
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</p>
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