[clang] [llvm] [AArch64] Add MS atomic and exclusive-access intrinsics (PR #202416)

[Eli Friedman via cfe-commits]

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@@ -32,7 +32,140 @@ def int_aarch64_stlxp : Intrinsic<[llvm_i32_ty],
                                   [llvm_i64_ty, llvm_i64_ty, llvm_ptr_ty],
                                   [IntrNoFree, IntrWillReturn]>;
 
-def int_aarch64_clrex : Intrinsic<[]>;
+def int_aarch64_clrex : Intrinsic<[], [llvm_i32_ty]>;
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efriedma-quic wrote:

If we're going to change the signature here, we should have AutoUpgrade support.

https://github.com/llvm/llvm-project/pull/202416