Default to swift-async-fp=always

This matches what we did before the introduction of dynamic swift_async_extendedFramePointerFlags usage

Author: aschwaighofer

llvm/lib/CodeGen/CommandFlags.cpp

@@ -281,7 +281,7 @@ codegen::RegisterCodeGenFlags::RegisterCodeGenFlags() {
   static cl::opt<SwiftAsyncFramePointerMode> SwiftAsyncFramePointer(
       "swift-async-fp",
       cl::desc("Determine when the Swift async frame pointer should be set"),
-      cl::init(SwiftAsyncFramePointerMode::DeploymentBased),
+      cl::init(SwiftAsyncFramePointerMode::Always),
       cl::values(clEnumValN(SwiftAsyncFramePointerMode::DeploymentBased, "auto",
                             "Determine based on deployment target"),
                  clEnumValN(SwiftAsyncFramePointerMode::Always, "always",

llvm/test/CodeGen/AArch64/swift-dynamic-async-frame.ll

@@ -1,18 +1,24 @@
 ; RUN: llc -mtriple arm64-apple-ios15.0.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
 ; RUN: llc -mtriple arm64-apple-ios15.0.0 -swift-async-fp=auto %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
+; RUN: llc -mtriple arm64-apple-ios15.0.0 -swift-async-fp=never %s -o - | FileCheck %s --check-prefix=CHECK-NEVER
 ; RUN: llc -mtriple arm64-apple-ios14.9.0 -swift-async-fp=always %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
-; RUN: llc -mtriple arm64-apple-ios14.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC
+; RUN: llc -mtriple arm64-apple-ios14.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
 ; RUN: llc -mtriple arm64-apple-ios14.9.0 -swift-async-fp=auto %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC
 ; RUN: llc -mtriple arm64-apple-tvos15.0.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
-; RUN: llc -mtriple arm64-apple-tvos14.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC
+; RUN: llc -mtriple arm64-apple-tvos14.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
 ; RUN: llc -mtriple arm64-apple-macosx12.0.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
-; RUN: llc -mtriple arm64-apple-macosx11.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC
+; RUN: llc -mtriple arm64-apple-macosx11.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
 ; RUN: llc -mtriple arm64_32-apple-watchos8.0.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
-; RUN: llc -mtriple arm64_32-apple-watchos7.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC-32
+; RUN: llc -mtriple arm64_32-apple-watchos7.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-STATIC
+; RUN: llc -mtriple -swift-async-fp=auto arm64_32-apple-watchos7.9.0 %s -o - | FileCheck %s --check-prefix=CHECK-DYNAMIC-32
 
 ; CHECK-STATIC-LABEL: foo:
 ; CHECK-STATIC: orr x29, x29, #0x1000000000000000
 
+; CHECK-NEVER-LABEL: foo:
+; CHECK-NEVER-NOT: orr x29, x29, #0x1000000000000000
+; CHECK-NEVER-NOT: _swift_async_extendedFramePointerFlags
+
 ; CHECK-DYNAMIC-LABEL: foo:
 ; CHECK-DYNAMIC: adrp x16, _swift_async_extendedFramePointerFlags@GOTPAGE
 ; CHECK-DYNAMIC: ldr x16, [x16, _swift_async_extendedFramePointerFlags@GOTPAGEOFF]