[RemoveDIs][NFC] Move DPValue::filter -> filterDbgVars (#85208)

This patch changes DPValue::filter to be a non-member method
filterDbgVars. There are two reasons for this: firstly, the name of
DPValue is about to change to DbgVariableRecord, which will result in
every `for` loop that uses DPValue::filter to require a line break. This
is a small thing, but it makes the rename patch more difficult to
review, and is just generally more awkward for what is a fairly common
loop. Secondly, the intent is to later break up the DPValue class into
subclasses, at which point it would be better to have a non-member
function that allows template arguments for the cases we want to filter
with greater specificity.

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/IPO/MergeFunctions.cpp b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
index ed5352e..4ff14b6 100644
--- a/llvm/lib/Transforms/IPO/MergeFunctions.cpp
+++ b/llvm/lib/Transforms/IPO/MergeFunctions.cpp
@@ -643,7 +643,7 @@ void MergeFunctions::filterInstsUnrelatedToPDI(
        BI != BIE; ++BI) {
     // Examine DPValues as they happen "before" the instruction. Are they
     // connected to parameters?
-    for (DPValue &DPV : DPValue::filter(BI->getDbgRecordRange())) {
+    for (DPValue &DPV : filterDbgVars(BI->getDbgRecordRange())) {
       if (DPV.isDbgValue() || DPV.isDbgAssign()) {
         ExamineDbgValue(&DPV, PDPVRelated);
       } else {
@@ -686,7 +686,7 @@ void MergeFunctions::filterInstsUnrelatedToPDI(
 
   // Collect the set of unrelated instructions and debug records.
   for (Instruction &I : *GEntryBlock) {
-    for (DPValue &DPV : DPValue::filter(I.getDbgRecordRange()))
+    for (DPValue &DPV : filterDbgVars(I.getDbgRecordRange()))
       IsPDIRelated(&DPV, PDPVRelated, PDPVUnrelatedWL);
     IsPDIRelated(&I, PDIRelated, PDIUnrelatedWL);
   }