[llvm] [AArch64][GlobalISel] Add support for pre-indexed loads/stores. (PR #70185)

[via llvm-commits]

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@@ -1141,11 +1141,29 @@ bool CombinerHelper::findPreIndexCandidate(GLoadStore &LdSt, Register &Addr,
       return false;
   }
 
+  // Avoid increasing cross-block register pressure.
+  for (auto &AddrUse : MRI.use_nodbg_instructions(Addr)) {
+    if (AddrUse.getParent() != LdSt.getParent())
+      return false;
+  }
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tschuett wrote:

Are you sure about the braces?

https://github.com/llvm/llvm-project/pull/70185