[Bitcode] Use range-based for loops (NFC) (#104534)

Author: kazutakahirata

llvm/lib/Bitcode/Writer/BitcodeWriter.cpp

@@ -2820,9 +2820,9 @@ void ModuleBitcodeWriter::writeConstants(unsigned FirstVal, unsigned LastVal,
           Code = bitc::CST_CODE_CE_GEP_WITH_INRANGE;
           emitConstantRange(Record, *Range, /*EmitBitWidth=*/true);
         }
-        for (unsigned i = 0, e = CE->getNumOperands(); i != e; ++i) {
-          Record.push_back(VE.getTypeID(C->getOperand(i)->getType()));
-          Record.push_back(VE.getValueID(C->getOperand(i)));
+        for (const Value *Op : CE->operands()) {
+          Record.push_back(VE.getTypeID(Op->getType()));
+          Record.push_back(VE.getValueID(Op));
         }
         break;
       }
@@ -3078,8 +3078,8 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
         if (!pushValueAndType(I.getOperand(0), InstID, Vals))
           AbbrevToUse = FUNCTION_INST_RET_VAL_ABBREV;
       } else {
-        for (unsigned i = 0, e = NumOperands; i != e; ++i)
-          pushValueAndType(I.getOperand(i), InstID, Vals);
+        for (const Value *Op : I.operands())
+          pushValueAndType(Op, InstID, Vals);
       }
     }
     break;