MC: Remove MCSubtargetInfo() default constructor

Force all creators of `MCSubtargetInfo` to immediately initialize it,
merging the default constructor and the initializer into an initializing
constructor.  Besides cleaning up the code a little, this makes it clear
that the initializer is never called again later.

Out-of-tree backends need a trivial change: instead of calling:

    auto *X = new MCSubtargetInfo();
    InitXYZMCSubtargetInfo(X, ...);
    return X;

they should call:

    return createXYZMCSubtargetInfoImpl(...);

There's no real functionality change here.

llvm-svn: 241957

1 files changed, 1 insertions, 3 deletions

diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
index 0f047957186..9113e4a46b9 100644
--- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
+++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
@@ -65,11 +65,9 @@ static MCRegisterInfo *createSparcMCRegisterInfo(const Triple &TT) {
 
 static MCSubtargetInfo *
 createSparcMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
-  MCSubtargetInfo *X = new MCSubtargetInfo();
   if (CPU.empty())
     CPU = (TT.getArch() == Triple::sparcv9) ? "v9" : "v8";
-  InitSparcMCSubtargetInfo(X, TT, CPU, FS);
-  return X;
+  return createSparcMCSubtargetInfoImpl(TT, CPU, FS);
 }
 
 // Code models. Some only make sense for 64-bit code.