[clang] [llvm] Add AMO load with Compare and Swap Not Equal (PR #178061)

[via cfe-commits]

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@@ -112,9 +112,99 @@ entry:
   ret void
 }
 
+define void @test_lwat_csne(ptr noundef %ptr, i32 noundef %value1, i32 noundef %value2, ptr nocapture %resp) {
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RolandF77 wrote:

Can we add nounwind on these test func?

https://github.com/llvm/llvm-project/pull/178061