[llvm] [VPlan] Implement printing VPIRMetadata. (PR #168385)

[David Sherwood via llvm-commits]

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@@ -4444,6 +4449,11 @@ class VPlan {
   /// Return the VPIRBasicBlock wrapping the header of the scalar loop.
   VPIRBasicBlock *getScalarHeader() const { return ScalarHeader; }
 
+  /// Return the Module from the scalar header.
+  const Module &getModule() const {
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david-arm wrote:

Given this is only used in one place is it worth adding this function? Not sure if it would be used elsewhere though.

https://github.com/llvm/llvm-project/pull/168385