[PATCH] [OPENMP] Codegen for 'omp master' directive

[Alexey Bataev]

Thanks for the review John! I really appreciate it!!!

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Comment at: lib/CodeGen/CGOpenMPRuntime.cpp:685
@@ +684,3 @@
+    MasterOpGen();
+    // Build a call to __kmpc_end_master
+    RTLFn = CreateRuntimeFunction(OMPRTL__kmpc_end_master);
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rjmccall wrote:
> Please add a comment here that it's illegal to branch in or out of the master block — which I assume you're enforcing in Sema somehow — so you can just call __kmpc_end_master on fallthrough rather than pushing a normal cleanup for it.
Yes, it is prohibited by the OpenMP spec and enforced in Sema. I'll add a comment.

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Comment at: lib/CodeGen/CGOpenMPRuntime.h:101
@@ -98,1 +100,3 @@
+    // Call to void __kmpc_end_master(ident_t *, kmp_int32 global_tid);
+    OMPRTL__kmpc_end_master
   };
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rjmccall wrote:
> Please leave a trailing comma on the last enumerator.  Makes a minor improvement to diffs.
Ok

http://reviews.llvm.org/D6473