Subzero. Fixes valgrind errors.

src/IceELFObjectWriter.cpp

 //===- subzero/src/IceELFObjectWriter.cpp - ELF object file writer --------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 370 matching lines @@
     llvm::report_fatal_error("Unknown SectionType");
     break;
   }
 
   constexpr uint8_t SymbolType = STT_OBJECT;
   for (VariableDeclaration *Var : Vars) {
     // If the variable declaration does not have an initializer, its symtab
     // entry will be created separately.
     if (!Var->hasInitializer())
       continue;
-    Elf64_Xword Align = Var->getAlignment();
     constexpr Elf64_Xword MinAlign = 1;
-    Align = std::max(Align, MinAlign);
+    const auto Align = std::max<Elf64_Xword>(MinAlign, Var->getAlignment());
     Section->padToAlignment(Str, Align);
     SizeT SymbolSize = Var->getNumBytes();
     bool IsExternal = Var->isExternal() || Ctx.getFlags().getDisableInternal();
     const uint8_t SymbolBinding = IsExternal ? STB_GLOBAL : STB_LOCAL;
     const IceString &Name = Var->getName();
     SymTab->createDefinedSym(Name, SymbolType, SymbolBinding, Section,
                              Section->getCurrentSize(), SymbolSize);
     StrTab->add(Name);
     if (!Var->hasNonzeroInitializer()) {
       assert(ST == BSS || ST == ROData);
@@ skipping 288 matching lines @@
   if (ELF64) {
     writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(),
                                  AllSections.size());
   } else {
     writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(),
                                   AllSections.size());
   }
 }
 
 } // end of namespace Ice