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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 - spurious "used "here" note diagnostics for __clang_cuda_device_functions.h"
href="https://bugs.llvm.org/show_bug.cgi?id=51752">51752</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>spurious "used "here" note diagnostics for __clang_cuda_device_functions.h
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>Clang Compiler Support
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jdenny.ornl@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>a.bataev@hotmail.com, jdoerfert@anl.gov, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I can reproduce this at least as recently as 1f9e437065ae and at least as early
as 04242bdca991. The note diagnostics here do not make sense to me:
```
$ cat test.c
#include <assert.h>
#include <stdlib.h>
int main(int argc, char *argv[]) {
assert(argc == 2);
int i = atoi(argv[1]);
return 0;
}
$ clang -fopenmp -fopenmp-targets=nvptx64 -Wunused-variable test.c
test.c:5:7: warning: unused variable 'i' [-Wunused-variable]
int i = atoi(argv[1]);
^
1 warning generated.
test.c:5:7: warning: unused variable 'i' [-Wunused-variable]
int i = atoi(argv[1]);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:43:66:
note: used here
__DEVICE__ void __attribute__((overloadable)) __brkpt(int __a) { __brkpt(); }
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1189:10:
note: used here
return __bool2mask(__vseteq2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1189:22:
note: used here
return __bool2mask(__vseteq2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1199:22:
note: used here
return __bool2mask(__vseteq4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1209:22:
note: used here
return __bool2mask(__vsetges2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1219:22:
note: used here
return __bool2mask(__vsetges4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1229:22:
note: used here
return __bool2mask(__vsetgeu2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1239:22:
note: used here
return __bool2mask(__vsetgeu4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1249:22:
note: used here
return __bool2mask(__vsetgts2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1259:22:
note: used here
return __bool2mask(__vsetgts4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1269:22:
note: used here
return __bool2mask(__vsetgtu2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1279:22:
note: used here
return __bool2mask(__vsetgtu4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1289:22:
note: used here
return __bool2mask(__vsetles2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1299:22:
note: used here
return __bool2mask(__vsetles4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1309:22:
note: used here
return __bool2mask(__vsetleu2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1319:22:
note: used here
return __bool2mask(__vsetleu4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1329:22:
note: used here
return __bool2mask(__vsetlts2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1339:22:
note: used here
return __bool2mask(__vsetlts4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1349:22:
note: used here
return __bool2mask(__vsetltu2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1359:22:
note: used here
return __bool2mask(__vsetltu4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1369:22:
note: used here
return __bool2mask(__vsetne2(__a, __b), 16);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1379:22:
note: used here
return __bool2mask(__vsetne4(__a, __b), 8);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1399:21:
note: used here
unsigned mask = __vcmpgts2(__a, __b);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1493:60:
note: used here
__DEVICE__ unsigned int __vneg2(unsigned int __a) { return __vsub2(0, __a); }
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1502:60:
note: used here
__DEVICE__ unsigned int __vneg4(unsigned int __a) { return __vsub4(0, __a); }
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1511:10:
note: used here
return __vsubss2(0, __a);
^
/home/jdenny/ornl/llvm/llvm-mono-git/install/lib/clang/14.0.0/include/__clang_cuda_device_functions.h:1521:10:
note: used here
return __vsubss4(0, __a);
^
1 warning generated.
```</pre>
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