Add support for pretty platform names to `@available`/

`__builtin_available`

This commit allows us to use the macOS/iOS/tvOS/watchOS platform names in
`@available`/`__builtin_available`.

rdar://32067795

Differential Revision: https://reviews.llvm.org/D33000


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@302540 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index 3e02e46ddc..77316b9ad1 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -3001,12 +3001,14 @@ Optional<AvailabilitySpec> Parser::ParseAvailabilitySpec() {
     if (Version.empty())
       return None;
 
-    StringRef Platform = PlatformIdentifier->Ident->getName();
+    StringRef GivenPlatform = PlatformIdentifier->Ident->getName();
+    StringRef Platform =
+        AvailabilityAttr::canonicalizePlatformName(GivenPlatform);
 
     if (AvailabilityAttr::getPrettyPlatformName(Platform).empty()) {
       Diag(PlatformIdentifier->Loc,
            diag::err_avail_query_unrecognized_platform_name)
-          << Platform;
+          << GivenPlatform;
       return None;
     }