[clang-cl] Emit nicer warning on unknown /arch: arguments

Now prints the list of known archs. This requires plumbing a Driver
arg through a few functions.

Also add two more convenience insert() overlods to StringMap.

Differential Revision: https://reviews.llvm.org/D109105

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/StringMapTest.cpp b/llvm/unittests/ADT/StringMapTest.cpp
index 98fbd6e..6a3cca5 100644
--- a/llvm/unittests/ADT/StringMapTest.cpp
+++ b/llvm/unittests/ADT/StringMapTest.cpp
@@ -111,6 +111,13 @@ TEST_F(StringMapTest, ConstEmptyMapTest) {
   EXPECT_TRUE(constTestMap.find(testKeyStr) == constTestMap.end());
 }
 
+// initializer_list ctor test; also implicitly tests initializer_list and
+// iterator overloads of insert().
+TEST_F(StringMapTest, InitializerListCtor) {
+  testMap = StringMap<uint32_t>({{"key", 1}});
+  assertSingleItemMap();
+}
+
 // A map with a single entry.
 TEST_F(StringMapTest, SingleEntryMapTest) {
   testMap[testKey] = testValue;