[PATCH] [OPENMP] Codegen for 'omp critical' directive.

Thu Sep 4 20:27:47 PDT 2014

Hi doug.gregor, hfinkel, rjmccall, rsmith, fraggamuffin, ejstotzer,

This patch adds codegen for constructs:
#pragma omp critical [name]
<body>

It generates global variable ".gomp_critical_user_[name].var" of type int32[8]. Then it generates library call "__kmpc_critical(loc, gtid, .gomp_critical_user_[name].var)", code for <body> statement and final call "__kmpc_end_critical(loc, gtid, .gomp_critical_user_[name].var)".

http://reviews.llvm.org/D5202

Files:
  lib/CodeGen/CGOpenMPRuntime.cpp
  lib/CodeGen/CGOpenMPRuntime.h
  lib/CodeGen/CGStmtOpenMP.cpp
  test/OpenMP/critical_codegen.cpp
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