[llvm] [VFABI] Improve VFABI unit tests (PR #73907)

[Paschalis Mpeis via llvm-commits]

================
@@ -96,22 +96,23 @@ struct VFShape {
 
   // Retrieve the VFShape that can be used to map a (scalar) function to itself,
   // with VF = 1.
-  static VFShape getScalarShape(const CallInst &CI) {
-    return VFShape::get(CI, ElementCount::getFixed(1),
+  static VFShape getScalarShape(const FunctionType *FTy) {
----------------
paschalis-mpeis wrote:

Opened new PR #74569 

https://github.com/llvm/llvm-project/pull/73907