Land the long talked about "type system rewrite" patch. This

patch brings numerous advantages to LLVM.  One way to look at it
is through diffstat:
 109 files changed, 3005 insertions(+), 5906 deletions(-)

Removing almost 3K lines of code is a good thing.  Other advantages
include:

1. Value::getType() is a simple load that can be CSE'd, not a mutating
   union-find operation.
2. Types a uniqued and never move once created, defining away PATypeHolder.
3. Structs can be "named" now, and their name is part of the identity that
   uniques them.  This means that the compiler doesn't merge them structurally
   which makes the IR much less confusing.
4. Now that there is no way to get a cycle in a type graph without a named
   struct type, "upreferences" go away.
5. Type refinement is completely gone, which should make LTO much MUCH faster
   in some common cases with C++ code.
6. Types are now generally immutable, so we can use "Type *" instead 
   "const Type *" everywhere.

Downsides of this patch are that it removes some functions from the C API,
so people using those will have to upgrade to (not yet added) new API.  
"LLVM 3.0" is the right time to do this.

There are still some cleanups pending after this, this patch is large enough
as-is.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134829 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 49 deletions

diff --git a/lib/VMCore/Core.cpp b/lib/VMCore/Core.cpp
index bdd988e7b0..d9ced94134 100644
--- a/lib/VMCore/Core.cpp
+++ b/lib/VMCore/Core.cpp
@@ -19,7 +19,6 @@
 #include "llvm/GlobalVariable.h"
 #include "llvm/GlobalAlias.h"
 #include "llvm/LLVMContext.h"
-#include "llvm/TypeSymbolTable.h"
 #include "llvm/InlineAsm.h"
 #include "llvm/IntrinsicInst.h"
 #include "llvm/PassManager.h"
@@ -111,27 +110,6 @@ void LLVMSetTarget(LLVMModuleRef M, const char *Triple) {
   unwrap(M)->setTargetTriple(Triple);
 }
 
-/*--.. Type names ..........................................................--*/
-LLVMBool LLVMAddTypeName(LLVMModuleRef M, const char *Name, LLVMTypeRef Ty) {
-  return unwrap(M)->addTypeName(Name, unwrap(Ty));
-}
-
-void LLVMDeleteTypeName(LLVMModuleRef M, const char *Name) {
-  TypeSymbolTable &TST = unwrap(M)->getTypeSymbolTable();
-
-  TypeSymbolTable::iterator I = TST.find(Name);
-  if (I != TST.end())
-    TST.remove(I);
-}
-
-LLVMTypeRef LLVMGetTypeByName(LLVMModuleRef M, const char *Name) {
-  return wrap(unwrap(M)->getTypeByName(Name));
-}
-
-const char *LLVMGetTypeName(LLVMModuleRef M, LLVMTypeRef Ty) {
-  return unwrap(M)->getTypeName(unwrap(Ty)).c_str();
-}
-
 void LLVMDumpModule(LLVMModuleRef M) {
   unwrap(M)->dump();
 }
@@ -182,8 +160,6 @@ LLVMTypeKind LLVMGetTypeKind(LLVMTypeRef Ty) {
     return LLVMArrayTypeKind;
   case Type::PointerTyID:
     return LLVMPointerTypeKind;
-  case Type::OpaqueTyID:
-    return LLVMOpaqueTypeKind;
   case Type::VectorTyID:
     return LLVMVectorTypeKind;
   case Type::X86_MMXTyID:
@@ -382,9 +358,6 @@ LLVMTypeRef LLVMVoidTypeInContext(LLVMContextRef C)  {
 LLVMTypeRef LLVMLabelTypeInContext(LLVMContextRef C) {
   return wrap(Type::getLabelTy(*unwrap(C)));
 }
-LLVMTypeRef LLVMOpaqueTypeInContext(LLVMContextRef C) {
-  return wrap(OpaqueType::get(*unwrap(C)));
-}
 
 LLVMTypeRef LLVMVoidType(void)  {
   return LLVMVoidTypeInContext(LLVMGetGlobalContext());
@@ -392,28 +365,6 @@ LLVMTypeRef LLVMVoidType(void)  {
 LLVMTypeRef LLVMLabelType(void) {
   return LLVMLabelTypeInContext(LLVMGetGlobalContext());
 }
-LLVMTypeRef LLVMOpaqueType(void) {
-  return LLVMOpaqueTypeInContext(LLVMGetGlobalContext());
-}
-
-/*--.. Operations on type handles ..........................................--*/
-
-LLVMTypeHandleRef LLVMCreateTypeHandle(LLVMTypeRef PotentiallyAbstractTy) {
-  return wrap(new PATypeHolder(unwrap(PotentiallyAbstractTy)));
-}
-
-void LLVMDisposeTypeHandle(LLVMTypeHandleRef TypeHandle) {
-  delete unwrap(TypeHandle);
-}
-
-LLVMTypeRef LLVMResolveTypeHandle(LLVMTypeHandleRef TypeHandle) {
-  return wrap(unwrap(TypeHandle)->get());
-}
-
-void LLVMRefineType(LLVMTypeRef AbstractTy, LLVMTypeRef ConcreteTy) {
-  unwrap<DerivedType>(AbstractTy)->refineAbstractTypeTo(unwrap(ConcreteTy));
-}
-
 
 /*===-- Operations on values ----------------------------------------------===*/