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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - s390x/systemz: ctpop.v16i8 "has incorrect return type""
href="https://bugs.llvm.org/show_bug.cgi?id=39730">39730</a>
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<th>Summary</th>
<td>s390x/systemz: ctpop.v16i8 "has incorrect return type"
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>danielwatson311@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>Getting this error when linking to LLVM's ctpop intrinsic on s390x:
Intrinsic has incorrect return type!
void (<16 x i8>*, <16 x i8>*)* @llvm.ctpop.v16i8
LLVM ERROR: Broken function found, compilation aborted!
With the following code (Rust):
#![feature(repr_simd, link_llvm_intrinsics, simd_ffi)]
#[repr(simd)]
pub struct u8x16(u8, u8, u8, u8, u8, u8, u8, u8, u8, u8, u8, u8, u8, u8,
u8, u8,);
extern {
#[link_name = "llvm.ctpop.v16i8"]
fn ctpop_u8x16(x: u8x16) -> u8x16;
}
pub fn ctpop(x: u8x16) -> u8x16 {
unsafe { ctpop_u8x16(x) }
}
Full code: <a href="https://github.com/rust-lang-nursery/packed_simd/pull/190">https://github.com/rust-lang-nursery/packed_simd/pull/190</a>
I attempted to find a minimal example but found none:
<a href="https://godbolt.org/z/_nnrkF">https://godbolt.org/z/_nnrkF</a>
LLVM: 8.0.0svn</pre>
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