[PATCH] [OPENMP] Coegen for 'firstprivate' clause in 'sections' directive.

Thu Apr 23 04:21:33 PDT 2015

Hi rjmccall, hfinkel,

If there is 2 or more sections in a 'section' directive the following code is generated:
```
<init for firstprivates>
@__kmpc_cancel_barrier();// To avoid data race in firstprivate init
@__kmpc_for_static_init_4();
<BODY for sections directive>
@__kmpc_for_static_fini()
```

If there is only one section, the following code is generated:
```
if (@__kmpc_single()) {
<init for firstprivates>
@__kmpc_end_single();
}
@__kmpc_cancel_barrier(); // To avoid data race in firstprivate init

```

http://reviews.llvm.org/D9214

Files:
  lib/CodeGen/CGStmtOpenMP.cpp
  test/OpenMP/sections_firstprivate_codegen.cpp

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