[llvm] [AArch64] Add ISel patterns for LDAPURS* instructions (PR #171788)

[David Green via llvm-commits]

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@@ -222,6 +374,24 @@ define i32 @load_atomic_i32_aligned_acquire(ptr %ptr) {
     ret i32 %r
 }
 
+define i64 @load_atomic_i32_aligned_acquire_sext_i64(ptr %ptr) {
+; GISEL-LABEL: load_atomic_i32_aligned_acquire_sext_i64:
+; GISEL:    ldapur w8, [x0, #16]
+; GISEL:    ldapursw x0, [x0, #16]
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davemgreen wrote:

It doesn't look like GISel will correctly remove the node that should be folded in to the pattern. That sounds like something we need to fix.

https://github.com/llvm/llvm-project/pull/171788