MCSection: Simplify useCodeAlign

Author: MaskRay

llvm/include/llvm/MC/MCSection.h

@@ -654,7 +654,7 @@ class LLVM_ABI MCSection {
 
   /// Return true if a .align directive should use "optimized nops" to fill
   /// instead of 0s.
-  virtual bool useCodeAlign() const = 0;
+  virtual bool useCodeAlign() const { return false; }
 
   /// Check whether this section is "virtual", that is has no actual object
   /// file contents.

llvm/include/llvm/MC/MCSectionDXContainer.h

@@ -29,7 +29,6 @@ class MCSectionDXContainer final : public MCSection {
 public:
   void printSwitchToSection(const MCAsmInfo &, const Triple &, raw_ostream &,
                             uint32_t) const override;
-  bool useCodeAlign() const override { return false; }
 };
 
 } // end namespace llvm

llvm/include/llvm/MC/MCSectionGOFF.h

@@ -77,8 +77,6 @@ class LLVM_ABI MCSectionGOFF final : public MCSection {
                             raw_ostream &OS,
                             uint32_t Subsection) const override;
 
-  bool useCodeAlign() const override { return false; }
-
   // Return the parent section.
   MCSectionGOFF *getParent() const { return Parent; }
 

llvm/include/llvm/MC/MCSectionSPIRV.h

@@ -33,7 +33,6 @@ class MCSectionSPIRV final : public MCSection {
   void printSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
                             raw_ostream &OS,
                             uint32_t Subsection) const override {}
-  bool useCodeAlign() const override { return false; }
 };
 
 } // end namespace llvm