[llvm] [AArch64] Do not generate indexed addressing mode for volatile accesses (PR #196305)

[Nikita Popov via llvm-commits]

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@@ -14,7 +14,7 @@ body: |
   bb.0.entry:
     liveins: $x0
 
-    STGi $x0, $x0, 0
+    STGi $x0, $x0, 0 :: (store (s64))
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nikic wrote:

I've excluded the tag store instructions + STGP.

(As a side note, we have some tests with STGi + s128 MMO, which *probably* isn't right?)

https://github.com/llvm/llvm-project/pull/196305