Whether an argument is required (in contrast with being an

optional argument passed through the variadic ellipsis)
potentially affects how we need to lower it.  Propagate
this information down to the various getFunctionInfo(...)
overloads on CodeGenTypes.  Furthermore, rename those
overloads to clarify their distinct purposes, and make
sure we're calling the right one in the right place.
This has a nice side-effect of making it easier to construct
a function type, since the 'variadic' bit is no longer
separable.

This shouldn't really change anything for our existing
platforms, with one minor exception --- we should now call
variadic ObjC methods with the ... in the "right place"
(see the test case), which I guess matters for anyone
running GNUStep on MIPS.  Mostly it's just a substantial
clean-up.

llvm-svn: 150788

1 files changed, 7 insertions, 6 deletions

diff --git a/clang/lib/CodeGen/CGDeclCXX.cpp b/clang/lib/CodeGen/CGDeclCXX.cpp
index 44acf62aa64..189760821b7 100644
--- a/clang/lib/CodeGen/CGDeclCXX.cpp
+++ b/clang/lib/CodeGen/CGDeclCXX.cpp
@@ -277,7 +277,7 @@ void CodeGenFunction::GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn,
                                                  llvm::GlobalVariable *Addr,
                                                        bool PerformInit) {
   StartFunction(GlobalDecl(), getContext().VoidTy, Fn,
-                getTypes().getNullaryFunctionInfo(),
+                getTypes().arrangeNullaryFunction(),
                 FunctionArgList(), SourceLocation());
 
   // Use guarded initialization if the global variable is weak. This
@@ -297,7 +297,7 @@ void CodeGenFunction::GenerateCXXGlobalInitFunc(llvm::Function *Fn,
                                                 llvm::Constant **Decls,
                                                 unsigned NumDecls) {
   StartFunction(GlobalDecl(), getContext().VoidTy, Fn,
-                getTypes().getNullaryFunctionInfo(),
+                getTypes().arrangeNullaryFunction(),
                 FunctionArgList(), SourceLocation());
 
   RunCleanupsScope Scope(*this);
@@ -322,7 +322,7 @@ void CodeGenFunction::GenerateCXXGlobalDtorFunc(llvm::Function *Fn,
                   const std::vector<std::pair<llvm::WeakVH, llvm::Constant*> >
                                                 &DtorsAndObjects) {
   StartFunction(GlobalDecl(), getContext().VoidTy, Fn,
-                getTypes().getNullaryFunctionInfo(),
+                getTypes().arrangeNullaryFunction(),
                 FunctionArgList(), SourceLocation());
 
   // Emit the dtors, in reverse order from construction.
@@ -350,9 +350,10 @@ CodeGenFunction::generateDestroyHelper(llvm::Constant *addr,
   args.push_back(&dst);
   
   const CGFunctionInfo &FI = 
-    CGM.getTypes().getFunctionInfo(getContext().VoidTy, args, 
-                                   FunctionType::ExtInfo());
-  llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI, false);
+    CGM.getTypes().arrangeFunctionDeclaration(getContext().VoidTy, args,
+                                              FunctionType::ExtInfo(),
+                                              /*variadic*/ false);
+  llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI);
   llvm::Function *fn = 
     CreateGlobalInitOrDestructFunction(CGM, FTy, "__cxx_global_array_dtor");