[gn] port c9f573463ebd (TargetLibraryInfo.inc)

llvm/utils/gn/secondary/llvm/include/llvm/Analysis/BUILD.gn

@@ -0,0 +1,5 @@
+import("//llvm/utils/TableGen/tablegen.gni")
+
+tablegen("TargetLibraryInfo") {
+  args = [ "-gen-target-library-info" ]
+}

llvm/utils/gn/secondary/llvm/lib/Analysis/BUILD.gn

@@ -1,6 +1,9 @@
 static_library("Analysis") {
   output_name = "LLVMAnalysis"
   public_deps = [
+    # Must be a public_dep because Analysis's headers include
+    # TargetLibraryInfo.inc.
+    "//llvm/include/llvm/Analysis:TargetLibraryInfo",
     # Must be a public_dep because Analysis's headers include llvm-config.h.
     "//llvm/include/llvm/Config:llvm-config",
   ]

llvm/utils/gn/secondary/llvm/utils/TableGen/Basic/BUILD.gn

@@ -15,6 +15,7 @@ source_set("Basic") {
     "SDNodeProperties.cpp",
     "TableGen.cpp",
     "TargetFeaturesEmitter.cpp",
+    "TargetLibraryInfoEmitter.cpp",
     "VTEmitter.cpp",
   ]
 }