[Support] Return an enum instead of an unsigned; NFC.

We seem to be (logically) returning ArchExtKinds here in all cases, so
the return type should reflect that.

The static_cast is necessary because `A.ID` is actually an `unsigned`,
presumably since we use `decltype(A)` to represent extended attributes
for both ARM and AArch64, which use distinct `ArchExtKinds`.

We can't trivially make the same change for ARM, because one of the
values it returns is the bitwise-or of two `ARM::ArchExtKind`s.

llvm-svn: 322613

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Support/TargetParser.cpp b/llvm/lib/Support/TargetParser.cpp
index 68684154178..5f288ff8e4a 100644
--- a/llvm/lib/Support/TargetParser.cpp
+++ b/llvm/lib/Support/TargetParser.cpp
@@ -868,10 +868,10 @@ AArch64::ArchKind AArch64::parseArch(StringRef Arch) {
   return ArchKind::INVALID;
 }
 
-unsigned llvm::AArch64::parseArchExt(StringRef ArchExt) {
+AArch64::ArchExtKind llvm::AArch64::parseArchExt(StringRef ArchExt) {
   for (const auto A : AArch64ARCHExtNames) {
     if (ArchExt == A.getName())
-      return A.ID;
+      return static_cast<ArchExtKind>(A.ID);
   }
   return AArch64::AEK_INVALID;
 }