From 220da125c423b71ce1507df84b75f54d274bc63d Mon Sep 17 00:00:00 2001
From: Archibald Elliott <archibald.elliott@arm.com>
Date: Fri, 25 Feb 2022 18:39:34 +0000
Subject: [PATCH] [NFC][Clang][AArch64] Clean up AArch64TargetInfo::hasFeature

---
 clang/lib/Basic/Targets/AArch64.cpp | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/clang/lib/Basic/Targets/AArch64.cpp b/clang/lib/Basic/Targets/AArch64.cpp
index bd03d88..964cf5c8 100644
--- a/clang/lib/Basic/Targets/AArch64.cpp
+++ b/clang/lib/Basic/Targets/AArch64.cpp
@@ -511,14 +511,12 @@ AArch64TargetInfo::getVScaleRange(const LangOptions &LangOpts) const {
 }
 
 bool AArch64TargetInfo::hasFeature(StringRef Feature) const {
-  return Feature == "aarch64" || Feature == "arm64" || Feature == "arm" ||
-         (Feature == "neon" && (FPU & NeonMode)) ||
-         ((Feature == "sve" || Feature == "sve2" || Feature == "sve2-bitperm" ||
-           Feature == "sve2-aes" || Feature == "sve2-sha3" ||
-           Feature == "sve2-sm4" || Feature == "f64mm" || Feature == "f32mm" ||
-           Feature == "i8mm" || Feature == "bf16") &&
-          (FPU & SveMode)) ||
-         (Feature == "ls64" && HasLS64);
+  return llvm::StringSwitch<bool>(Feature)
+    .Cases("aarch64", "arm64", "arm", true)
+    .Case("neon", FPU & NeonMode)
+    .Cases("sve", "sve2", "sve2-bitperm", "sve2-aes", "sve2-sha3", "sve2-sm4", "f64mm", "f32mm", "i8mm", "bf16", FPU & SveMode)
+    .Case("ls64", HasLS64)
+    .Default(false);
 }
 
 bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
-- 
2.7.4