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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Wrong number of dependencies when using OpenMP iterator()"
href="https://bugs.llvm.org/show_bug.cgi?id=52010">52010</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Wrong number of dependencies when using OpenMP iterator()
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>OpenMP
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rpenacob@bsc.es
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, rofirrim@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>In the following test case kmp_depend_info array size and the number of
dependencies passed to __kmpc_omp_task_with_deps is wrongly computed.
// t1.c
int x[100];
int y[100];
void foo() {
#pragma omp task depend(iterator(j=0:5), in: x[j], y[j])
{
}
}
void bar() {
#pragma omp task depend(iterator(j=0:5), in: x[j]) depend(iterator(j=0:5),
in: y[j])
{
}
}
Looking at the IR code with : clang -fopenmp -S -emit-llvm t1.c
; Size 5, but it is 5*2 = 10
define dso_local void @foo() #0 {
...
%vla = alloca %struct.kmp_depend_info, i64 5, align 16
%28 = call i32 @__kmpc_omp_task_with_deps(%struct.ident_t* @1, i32 %0, i8*
%1, i32 5, i8* %27, i32 0, i8* null)
}
; Size 25, but it is 10
define dso_local void @bar() #0 {
...
%vla = alloca %struct.kmp_depend_info, i64 25, align 16
%32 = call i32 @__kmpc_omp_task_with_deps(%struct.ident_t* @1, i32 %0, i8*
%1, i32 25, i8* %31, i32 0, i8* null)
}</pre>
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</p>
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