First cut at setting attributes for functions and calls; this puts us

much closer to passing the gcc struct layout tests.

It might be possible to refactor this a bit, but I'm not sure there's 
actually enough common code for that to be useful.

To get the calling convention completely correct, a bit of 
platform-specific code is necessary even for x86-Linux. On x86-Linux, the
alignment of function parameters is extremely strange; as far as I can tell,
it's always 4 except for SSE vectors or structs containing SSE vectors.  I'm 
continuing to investigate this.

llvm-svn: 51839

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 3e775260676..de2995f6a8c 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -26,6 +26,7 @@ namespace llvm {
   class Function;
   class GlobalValue;
   class TargetData;
+  class FunctionType;
 }
 
 namespace clang {
@@ -149,6 +150,10 @@ private:
   /// searches for any entries in GlobalDeclMap that point to OldVal, changing
   /// them to point to NewVal.  This is badbadbad, FIXME!
   void ReplaceMapValuesWith(llvm::Constant *OldVal, llvm::Constant *NewVal);
+
+  void SetFunctionAttributes(const FunctionDecl *FD,
+                             llvm::Function *F,
+                             const llvm::FunctionType *FTy);
   
 };
 }  // end namespace CodeGen