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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [OpenCL 2.0] Wrong implicit cast from pipe built-in functions."
href="https://llvm.org/bugs/show_bug.cgi?id=30219">30219</a>
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<th>Summary</th>
<td>[OpenCL 2.0] Wrong implicit cast from pipe built-in functions.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</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>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>OpenCL
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>aleksey.bader@mail.ru
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Here is an example that exposes the issue:
__kernel void testKernel(__global int *status, write_only pipe int tested_pipe)
{
*status = 0;
int value = 2;
if (write_pipe(tested_pipe, &value)) { *status = 2; return; }
}
Error message I get in Release mode on the trunk:
Branch condition is not 'i1' type!
br i32 %5, label %6, label %8
%5 = call i32 @__write_pipe_2(%opencl.pipe_t addrspace(1)* %3, i8
addrspace(4)* %4, i32 4, i32 4)
fatal error: error in backend: Broken function found, compilation aborted!
In Debug mode clang crashes in
clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr function.
It looks like a bug in the parser. Here is the expression passed to that
function:
CallExpr 0x7aed540 '_Bool'
|-ImplicitCastExpr 0x7aed528 'int (*)()' <BuiltinFnToFnPtr>
| `-DeclRefExpr 0x7aed438 '<builtin fn type>' Function 0x7aed358 'write_pipe'
'int ()'
|-DeclRefExpr 0x7aed460 'pipe int' lvalue ParmVar 0x7aecfe0 'tested_pipe' 'pipe
int'
`-UnaryOperator 0x7aed4d8 'int *' prefix '&'
`-DeclRefExpr 0x7aed488 'int' lvalue Var 0x7aed298 'value' 'int'
This looks wrong. There should be built-in call and implicit cast of resulting
integer to boolean value.</pre>
</div>
</p>
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