[CSGen] Remove literal type variable tracking from LinkedTypeInfo.

Author: hborla

lib/Sema/CSGen.cpp

@@ -84,11 +84,6 @@ namespace {
     unsigned haveStringLiteral : 1;
 
     llvm::SmallSet<TypeBase*, 16> collectedTypes;
-
-    llvm::SmallVector<TypeVariableType *, 16> intLiteralTyvars;
-    llvm::SmallVector<TypeVariableType *, 16> floatLiteralTyvars;
-    llvm::SmallVector<TypeVariableType *, 16> stringLiteralTyvars;
-
     llvm::SmallVector<BinaryExpr *, 4> binaryExprs;
 
     LinkedTypeInfo() {
@@ -188,35 +183,16 @@ namespace {
 
       if (isa<IntegerLiteralExpr>(expr)) {
         LTI.haveIntLiteral = true;
-        auto tyvar = CS.getType(expr)->getAs<TypeVariableType>();
-
-        if (tyvar) {
-          LTI.intLiteralTyvars.push_back(tyvar);
-        }
-        
         return { false, expr };
       }
 
       if (isa<FloatLiteralExpr>(expr)) {
         LTI.haveFloatLiteral = true;
-        auto tyvar = CS.getType(expr)->getAs<TypeVariableType>();
-
-        if (tyvar) {
-          LTI.floatLiteralTyvars.push_back(tyvar);
-        }
-
         return { false, expr };
       }
 
       if (isa<StringLiteralExpr>(expr)) {
         LTI.haveStringLiteral = true;
-
-        auto tyvar = CS.getType(expr)->getAs<TypeVariableType>();
-
-        if (tyvar) {
-          LTI.stringLiteralTyvars.push_back(tyvar);
-        }
-
         return { false, expr };
       }