[llvm] [VPlan] Compute scalar cost based on VPlan0 instead of legacy CM. (PR #196845)

[Luke Lau via llvm-commits]

================
@@ -1077,12 +1076,14 @@ InstructionCost VPRecipeWithIRFlags::getCostForRecipeWithOpcode(
   case Instruction::Xor: {
     // Certain instructions can be cheaper if they have a constant second
     // operand. One example of this are shifts on x86.
-    VPValue *RHS = getOperand(1);
-    TargetTransformInfo::OperandValueInfo RHSInfo = Ctx.getOperandInfo(RHS);
-
-    if (RHSInfo.Kind == TargetTransformInfo::OK_AnyValue &&
-        getOperand(1)->isDefinedOutsideLoopRegions())
-      RHSInfo.Kind = TargetTransformInfo::OK_UniformValue;
+    TargetTransformInfo::OperandValueInfo RHSInfo = {
+        TargetTransformInfo::OK_AnyValue, TargetTransformInfo::OP_None};
----------------
lukel97 wrote:

I think this is the same as the default constructor
```suggestion
    TargetTransformInfo::OperandValueInfo RHSInfo;
```

https://github.com/llvm/llvm-project/pull/196845