[clang] [llvm] [LoongArch] Support LA V1.1 feature ld-seq-sa that don't generate dbar 0x700. (PR #116762)

[Lu Weining via cfe-commits]

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@@ -100,99 +101,99 @@ define void @cmpxchg_i64_acquire_acquire(ptr %ptr, i64 %cmp, i64 %val) nounwind
 }
 
 define void @cmpxchg_i8_acquire_monotonic(ptr %ptr, i8 %cmp, i8 %val) nounwind {
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SixWeining wrote:

This test doesn't have `LA64` check?

https://github.com/llvm/llvm-project/pull/116762