Mikhail Gudim f5d153ef26 [VectorCombine] Fold binary op of reductions. (#121567) ...

Replace binary of of two reductions with one reduction of the binary op
applied to vectors. For example:

```
%v0_red = tail call i32 @llvm.vector.reduce.add.v16i32(<16 x i32> %v0)
%v1_red = tail call i32 @llvm.vector.reduce.add.v16i32(<16 x i32> %v1)
%res = add i32 %v0_red, %v1_red
```
gets transformed to:

```
%1 = add <16 x i32> %v0, %v1
%res = call i32 @llvm.vector.reduce.add.v16i32(<16 x i32> %1)
```

2025-02-22 06:11:33 -05:00

..

fold-binop-of-reductions.ll

…