[llvm-branch-commits] [llvm] [SelectionDAG][X86] Widen <2 x T> vector types for atomic load (PR #120598)

[Matt Arsenault via llvm-branch-commits]

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@@ -1200,6 +1200,13 @@ def : Pat<(i16 (atomic_load_16 addr:$src)), (MOV16rm addr:$src)>;
 def : Pat<(i32 (atomic_load_32 addr:$src)), (MOV32rm addr:$src)>;
 def : Pat<(i64 (atomic_load_64 addr:$src)), (MOV64rm addr:$src)>;
 
+def : Pat<(v4i32 (scalar_to_vector (i32 (anyext (i16 (atomic_load_16 addr:$src)))))),
+           (MOVDI2PDIrm addr:$src)>;   // load atomic <2 x i8>
+def : Pat<(v4i32 (scalar_to_vector (i32 (atomic_load_32 addr:$src)))),
+           (MOVDI2PDIrm addr:$src)>;   // load atomic <2 x i16>
+def : Pat<(v2i64 (scalar_to_vector (i64 (atomic_load_64 addr:$src)))),
+           (MOV64toPQIrm  addr:$src)>; // load atomic <2 x i32,float>
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arsenm wrote:

Yes 

https://github.com/llvm/llvm-project/pull/120598