[embedded] Add tests that verify dead-stripping of Unicode data tables works

Author: kubamracek

test/embedded/unicode-dead-strip1.swift

@@ -0,0 +1,40 @@
+// RUN: %target-swift-frontend -Osize -parse-as-library -enable-experimental-feature Embedded %s -c -o %t/a.o
+// RUN: %target-clang %t/a.o -o %t/a.out -dead_strip %swift_obj_root/lib/swift/embedded/%target-cpu-apple-macos/libswiftUnicodeDataTables.a
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=INCLUDES
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=EXCLUDES
+
+// REQUIRES: swift_in_compiler
+// REQUIRES: optimized_stdlib
+// REQUIRES: OS=macosx || OS=linux-gnu
+
+@main
+struct Main {
+  static func main() {
+    var dict: [String:String] = [:]
+    let c = "Cafe\u{301}"
+    let d = "Cafe\u{301}"
+    let e = "Café"
+    let f = "Caf\u{65}\u{301}"
+    let g = "Caf\u{e9}"
+    dict[c] = "x"
+    dict[d] = "x"
+    dict[e] = "x"
+    dict[f] = "x"
+    dict[g] = "x"
+    print(dict.count)
+    print(dict[f]!)
+  }
+}
+
+// The code uses String equality and hashing, should need the normalization, NFC, NFD tables, and not the others.
+// EXCLUDES-NOT: swift_stdlib_case
+// EXCLUDES-NOT: swift_stdlib_graphemeBreakProperties
+// EXCLUDES-NOT: swift_stdlib_linkingConsonant
+// EXCLUDES-NOT: swift_stdlib_mappings
+// EXCLUDES-NOT: swift_stdlib_names
+// INCLUDES:     swift_stdlib_nfc
+// INCLUDES:     swift_stdlib_nfd
+// INCLUDES:     swift_stdlib_normData
+// EXCLUDES-NOT: swift_stdlib_scripts
+// EXCLUDES-NOT: swift_stdlib_special_mappings
+// EXCLUDES-NOT: swift_stdlib_words

test/embedded/unicode-dead-strip2.swift

@@ -0,0 +1,29 @@
+// RUN: %target-swift-frontend -Osize -parse-as-library -enable-experimental-feature Embedded %s -c -o %t/a.o
+// RUN: %target-clang %t/a.o -o %t/a.out -dead_strip %swift_obj_root/lib/swift/embedded/%target-cpu-apple-macos/libswiftUnicodeDataTables.a
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=INCLUDES
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=EXCLUDES
+
+// REQUIRES: swift_in_compiler
+// REQUIRES: optimized_stdlib
+// REQUIRES: OS=macosx || OS=linux-gnu
+
+@main
+struct Main {
+  static func main() {
+    let e = "Café"
+    print(e.uppercased())
+  }
+}
+
+// The code uses String case conversion, should need the mapping tables, and not the others.
+// EXCLUDES-NOT: swift_stdlib_case
+// EXCLUDES-NOT: swift_stdlib_graphemeBreakProperties
+// EXCLUDES-NOT: swift_stdlib_linkingConsonant
+// INCLUDES:     swift_stdlib_mappings
+// EXCLUDES-NOT: swift_stdlib_names
+// EXCLUDES-NOT: swift_stdlib_nfc
+// EXCLUDES-NOT: swift_stdlib_nfd
+// EXCLUDES-NOT: swift_stdlib_normData
+// EXCLUDES-NOT: swift_stdlib_scripts
+// INCLUDES:     swift_stdlib_special_mappings
+// EXCLUDES-NOT: swift_stdlib_words

test/embedded/unicode-dead-strip3.swift

@@ -0,0 +1,31 @@
+// RUN: %target-swift-frontend -Osize -parse-as-library -enable-experimental-feature Embedded %s -c -o %t/a.o
+// RUN: %target-clang %t/a.o -o %t/a.out -dead_strip %swift_obj_root/lib/swift/embedded/%target-cpu-apple-macos/libswiftUnicodeDataTables.a
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=INCLUDES
+// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | grep swift_stdlib_ | sort | %FileCheck %s --check-prefix=EXCLUDES
+
+// REQUIRES: swift_in_compiler
+// REQUIRES: optimized_stdlib
+// REQUIRES: OS=macosx || OS=linux-gnu
+
+@main
+struct Main {
+  static func main() {
+    let e = "Café\nMacs"
+    for i in e.split(separator: "\n") {
+      print(i)
+    }
+  }
+}
+
+// The code uses String splitting, should need the normalization, NFC, NFD, grapheme breaking, linking tables, and not the others.
+// EXCLUDES-NOT: swift_stdlib_case
+// INCLUDES:     swift_stdlib_graphemeBreakProperties
+// INCLUDES:     swift_stdlib_linkingConsonant
+// EXCLUDES-NOT: swift_stdlib_mappings
+// EXCLUDES-NOT: swift_stdlib_names
+// INCLUDES:     swift_stdlib_nfc
+// INCLUDES:     swift_stdlib_nfd
+// INCLUDES:     swift_stdlib_normData
+// EXCLUDES-NOT: swift_stdlib_scripts
+// EXCLUDES-NOT: swift_stdlib_special_mappings
+// EXCLUDES-NOT: swift_stdlib_words