[gn build] (manually) port 65049d1610

llvm/utils/gn/secondary/llvm/include/llvm/Frontend/OpenACC/BUILD.gn

@@ -0,0 +1,21 @@
+import("//llvm/utils/TableGen/tablegen.gni")
+
+tablegen("ACC") {
+  visibility = [ ":acc_gen" ]
+  args = [ "-gen-directive-decl" ]
+  output_name = "ACC.h.inc"
+}
+
+tablegen("ACC.cpp") {
+  visibility = [ ":acc_gen" ]
+  args = [ "-gen-directive-gen" ]
+  output_name = "ACC.cpp.inc"
+  td_file = "ACC.td"
+}
+
+group("acc_gen") {
+  deps = [
+    ":ACC",
+    ":ACC.cpp",
+  ]
+}

llvm/utils/gn/secondary/llvm/lib/Frontend/OpenACC/BUILD.gn

@@ -0,0 +1,18 @@
+import("//llvm/utils/TableGen/tablegen.gni")
+
+tablegen("ACCImpl") {
+  visibility = [ ":OpenACC" ]
+  args = [ "-gen-directive-impl" ]
+  td_file = "//llvm/include/llvm/Frontend/OpenACC/ACC.td"
+  output_name = "ACC.cpp"
+}
+
+static_library("OpenACC") {
+  output_name = "LLVMFrontendOpenACC"
+  deps = [
+    ":ACCImpl",
+    "//llvm/lib/Support",
+  ]
+  public_deps = [ "//llvm/include/llvm/Frontend/OpenACC:acc_gen" ]
+  sources = get_target_outputs(":ACCImpl")
+}