[llvm] [RemoveDIs][DebugInfo] Create overloads of debug intrinsic utilities for DPValues (PR #78313)

[Jeremy Morse via llvm-commits]

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@@ -1824,6 +1835,30 @@ void at::deleteAll(Function *F) {
     DAI->eraseFromParent();
 }
 
+/// Get the FragmentInfo for the variable if it exists, otherwise return a
+/// FragmentInfo that covers the entire variable if the variable size is
+/// known, otherwise return a zero-sized fragment.
+static DIExpression::FragmentInfo
+getFragmentOrEntireVariable(const DPValue *DPV) {
+  DIExpression::FragmentInfo VariableSlice(0, 0);
+  // Get the fragment or variable size, or zero.
+  if (auto Sz = DPV->getFragmentSizeInBits())
+    VariableSlice.SizeInBits = *Sz;
+  if (auto Frag = DPV->getExpression()->getFragmentInfo())
+    VariableSlice.OffsetInBits = Frag->OffsetInBits;
+  return VariableSlice;
+}
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jmorse wrote:

Newline desired

https://github.com/llvm/llvm-project/pull/78313