[PATCH] D11932: [OPENMP] Link libomp.lib on Windows

[Alexey Bataev via cfe-commits]

ABataev created this revision.
ABataev added reviewers: chandlerc, rsmith.
ABataev added a subscriber: cfe-commits.

Adds libomp.lib for -fopenmp=libomp and libiomp5md.lib for -fopenmp=libiomp5 on Windows

http://reviews.llvm.org/D11932

Files:
  lib/Driver/Tools.cpp
  test/OpenMP/linking.c

Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -8878,6 +8878,25 @@
 
   Args.AddAllArgValues(CmdArgs, options::OPT__SLASH_link);
 
+  if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
+                   options::OPT_fno_openmp, false)) {
+    CmdArgs.push_back("-nodefaultlib:vcomp.lib");
+    CmdArgs.push_back("-nodefaultlib:vcompd.lib");
+    switch (getOpenMPRuntime(getToolChain(), Args)) {
+    case OMPRT_OMP:
+      CmdArgs.push_back("-defaultlib:libomp.lib");
+      break;
+    case OMPRT_IOMP5:
+      CmdArgs.push_back("-defaultlib:libiomp5md.lib");
+      break;
+    case OMPRT_GOMP:
+      break;
+    case OMPRT_Unknown:
+      // Already diagnosed.
+      break;
+    }
+  }
+
   // Add filenames, libraries, and other linker inputs.
   for (const auto &Input : Inputs) {
     if (Input.isFilename()) {
Index: test/OpenMP/linking.c
===================================================================
--- test/OpenMP/linking.c
+++ test/OpenMP/linking.c
@@ -69,3 +69,15 @@
 // CHECK-LD-OVERRIDE-64: "-lgomp" "-lrt" "-lgcc"
 // CHECK-LD-OVERRIDE-64: "-lpthread" "-lc"
 //
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     -fopenmp=libomp -target x86_64-msvc-win32 \
+// RUN:   | FileCheck --check-prefix=CHECK-MSVC-LINK-64 %s
+// CHECK-MSVC-LINK-64: "link.exe"
+// CHECK-MSVC-LINK-64-SAME: "-nodefaultlib:vcomp.lib" "-nodefaultlib:vcompd.lib" "-defaultlib:libomp.lib"
+//
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     -fopenmp=libiomp5 -target x86_64-msvc-win32 \
+// RUN:   | FileCheck --check-prefix=CHECK-MSVC-ILINK-64 %s
+// CHECK-MSVC-ILINK-64: "link.exe"
+// CHECK-MSVC-ILINK-64-SAME: "-nodefaultlib:vcomp.lib" "-nodefaultlib:vcompd.lib" "-defaultlib:libiomp5md.lib"
+//


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