[llvm] 96e3876 - [AsmPrinter] Migrate away from PointerUnion::dyn_cast (NFC) (#135740)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-04-15T02:36:18-07:00
New Revision: 96e38766118c62ed42ddedd4642284cdca12904e

URL: https://github.com/llvm/llvm-project/commit/96e38766118c62ed42ddedd4642284cdca12904e
DIFF: https://github.com/llvm/llvm-project/commit/96e38766118c62ed42ddedd4642284cdca12904e.diff

LOG: [AsmPrinter] Migrate away from PointerUnion::dyn_cast (NFC) (#135740)

Note that PointerUnion::dyn_cast has been soft deprecated in
PointerUnion.h:

  // FIXME: Replace the uses of is(), get() and dyn_cast() with
  //        isa<T>, cast<T> and the llvm::dyn_cast<T>

We use dyn_cast_if_present here because Bound can be null.

Added: 
    

Modified: 
    llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 2723b1f55ccaa..bf166cbb043de 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -1481,16 +1481,16 @@ void DwarfUnit::constructSubrangeDIE(DIE &DW_Subrange, const DISubrangeType *SR,
 
   auto AddBoundTypeEntry = [&](dwarf::Attribute Attr,
                                DISubrangeType::BoundType Bound) -> void {
-    if (auto *BV = Bound.dyn_cast<DIVariable *>()) {
+    if (auto *BV = dyn_cast_if_present<DIVariable *>(Bound)) {
       if (auto *VarDIE = getDIE(BV))
         addDIEEntry(DW_Subrange, Attr, *VarDIE);
-    } else if (auto *BE = Bound.dyn_cast<DIExpression *>()) {
+    } else if (auto *BE = dyn_cast_if_present<DIExpression *>(Bound)) {
       DIELoc *Loc = new (DIEValueAllocator) DIELoc;
       DIEDwarfExpression DwarfExpr(*Asm, getCU(), *Loc);
       DwarfExpr.setMemoryLocationKind();
       DwarfExpr.addExpression(BE);
       addBlock(DW_Subrange, Attr, DwarfExpr.finalize());
-    } else if (auto *BI = Bound.dyn_cast<ConstantInt *>()) {
+    } else if (auto *BI = dyn_cast_if_present<ConstantInt *>(Bound)) {
       if (Attr == dwarf::DW_AT_GNU_bias) {
         if (BI->getSExtValue() != 0)
           addUInt(DW_Subrange, Attr, dwarf::DW_FORM_sdata, BI->getSExtValue());