[clang] [llvm] [AArch64][clang][llvm] Add ACLE `stshh` atomic store builtin (PR #181386)

[Jonathan Thackray via cfe-commits]

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@@ -1577,6 +1577,21 @@ def : InstAlias<"nop", (NOP)>;
 
 def STSHH: STSHHI;
 
+let hasSideEffects = 1, mayStore = 1, isPseudo = 1, isCodeGenOnly = 1 in {
+def STSHH_ATOMIC_STORE_B
+    : Pseudo<(outs), (ins GPR32:$val, GPR64sp:$addr, i32imm:$order,
+                          i32imm:$policy), []>, Sched<[]>;
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jthackray wrote:

Thanks, fixed.

https://github.com/llvm/llvm-project/pull/181386
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