[llvm-branch-commits] [llvm] [LV] Add ExtNegatedMulAccReduction expression type (PR #160154)

[Sander de Smalen via llvm-branch-commits]

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@@ -3012,6 +3018,11 @@ class VPExpressionRecipe : public VPSingleDefRecipe {
                      VPWidenRecipe *Mul, VPReductionRecipe *Red)
       : VPExpressionRecipe(ExpressionTypes::ExtMulAccReduction,
                            {Ext0, Ext1, Mul, Red}) {}
+  VPExpressionRecipe(VPWidenCastRecipe *Ext0, VPWidenCastRecipe *Ext1,
+                     VPWidenRecipe *Mul, VPWidenRecipe *Sub,
+                     VPReductionRecipe *Red)
+      : VPExpressionRecipe(ExpressionTypes::ExtNegatedMulAccReduction,
+                           {Ext0, Ext1, Mul, Sub, Red}) {}
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sdesmalen-arm wrote:

I think this should assert that `Red` is an `add`, `Sub` is a `sub(0, ...)` and `Mul` is a `Instruction::Mul`

https://github.com/llvm/llvm-project/pull/160154