[clang] [clang][CodeGen] Fix sub-optimal clang CodeGen for __atomic_test_and_set (PR #160098)

[Sirui Mu via cfe-commits]

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@@ -735,8 +735,10 @@ static void EmitAtomicOp(CodeGenFunction &CGF, AtomicExpr *E, Address Dest,
                               CGF.Builder.getInt8(1), Order, Scope, E);
     RMWI->setVolatile(E->isVolatile());
     llvm::Value *Result = CGF.Builder.CreateIsNotNull(RMWI, "tobool");
-    auto *I = CGF.Builder.CreateStore(Result, Dest);
-    CGF.addInstToCurrentSourceAtom(I, Result);
+    llvm::Value *ExtResult =
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Lancern wrote:

Updated.

https://github.com/llvm/llvm-project/pull/160098