[llvm-branch-commits] [llvm] [AtomicExpand] Add bitcasts when expanding load atomic vector (PR #148900)

[Simon Pilgrim via llvm-branch-commits]

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@@ -189,3 +189,69 @@ define void @pointer_cmpxchg_expand6(ptr addrspace(1) %ptr, ptr addrspace(2) %v)
   ret void
 }
 
+define <2 x ptr> @atomic_vec2_ptr_align(ptr %x) nounwind {
+; CHECK-LABEL: define <2 x ptr> @atomic_vec2_ptr_align(
+; CHECK-SAME: ptr [[X:%.*]]) #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:    [[TMP1:%.*]] = call i128 @__atomic_load_16(ptr [[X]], i32 2)
+; CHECK-NEXT:    [[TMP6:%.*]] = bitcast i128 [[TMP1]] to <2 x i64>
+; CHECK-NEXT:    [[TMP7:%.*]] = inttoptr <2 x i64> [[TMP6]] to <2 x ptr>
+; CHECK-NEXT:    ret <2 x ptr> [[TMP7]]
+;
+  %ret = load atomic <2 x ptr>, ptr %x acquire, align 16
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RKSimon wrote:

should we add 32-bit triple test coverage to this file?

https://github.com/llvm/llvm-project/pull/148900