[llvm] 9d2181c - [NFC] Reuse DwarfExpression fragment (#210181)

[via llvm-commits]

Author: Eric Christopher
Date: 2026-07-16T19:03:04-07:00
New Revision: 9d2181c78f4e248069e39ec0e5b899dfbfcf3d6a

URL: https://github.com/llvm/llvm-project/commit/9d2181c78f4e248069e39ec0e5b899dfbfcf3d6a
DIFF: https://github.com/llvm/llvm-project/commit/9d2181c78f4e248069e39ec0e5b899dfbfcf3d6a.diff

LOG: [NFC] Reuse DwarfExpression fragment (#210181)

Reuse DwarfExpression fragment information since nothing changes it
between the outside of the loop and the inside of the loop.

Tested via make check.

Assisted by AI.

Added: 
    

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

Removed: 
    


################################################################################
diff  --git a/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
index f9cc8d176e52b..9b676f88a0cff 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
@@ -325,17 +325,15 @@ bool DwarfExpression::addMachineRegExpression(const TargetRegisterInfo &TRI,
   // expression representing a value, rather than a location.
   if ((!isParameterValue() && !isMemoryLocation() && !HasComplexExpression) ||
       isEntryValue()) {
-    auto FragmentInfo = ExprCursor.getFragmentInfo();
     unsigned RegSize = 0;
     for (auto &Reg : DwarfRegs) {
       RegSize += Reg.SubRegSize;
       if (Reg.DwarfRegNo >= 0)
         addReg(Reg.DwarfRegNo, Reg.Comment);
-      if (FragmentInfo)
-        if (RegSize > FragmentInfo->SizeInBits)
-          // If the register is larger than the current fragment stop
-          // once the fragment is covered.
-          break;
+      if (Fragment && RegSize > Fragment->SizeInBits)
+        // If the register is larger than the current fragment stop
+        // once the fragment is covered.
+        break;
       addOpPiece(Reg.SubRegSize);
     }