Start processing function blocks in Subzero.

src/IceTypeConverter.cpp

Index: src/IceTypeConverter.cpp
diff --git a/src/IceTypeConverter.cpp b/src/IceTypeConverter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..623947eace11efa19a104e85c241143251bad50f
--- /dev/null
+++ b/src/IceTypeConverter.cpp
@@ -0,0 +1,108 @@
+//===- subzero/src/IceTypeTranslator.cpp - Convert Ice/LLVm Types ---------===//

[Jim Stichnoth, 2014/07/17 23:00:33]

ICE/LLVM

[jvoung (off chromium), 2014/07/17 23:57:55]

TypeTranslator -> TypeConverter

[Karl, 2014/07/18 20:27:42]

Done.

[Karl, 2014/07/18 20:27:42]

Done.

+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements  how to convert LLVM types to ICE types, and ICE types

[Jim Stichnoth, 2014/07/17 23:00:33]

2 spaces between implements and how :)

[jvoung (off chromium), 2014/07/17 23:57:55]

implements  how ->
implements how

[Karl, 2014/07/18 20:27:42]

Done.

[Karl, 2014/07/18 20:27:42]

Done.

+// to LLVM types.
+//
+//===----------------------------------------------------------------------===//
+
+#include "IceTypeConverter.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace Ice {
+
+TypeConverter::TypeConverter(llvm::LLVMContext &Context) : Context(Context) {
+  AddLlvmType(IceType_void, llvm::Type::getVoidTy(Context));

[Jim Stichnoth, 2014/07/17 23:00:33]

It would be great if this could be encoded in IceTypes.def, but sadly I can't
think of a satisfying way to do it.

[Karl, 2014/07/18 20:27:42]

Neither can I.

+  AddLlvmType(IceType_i1, llvm::IntegerType::get(Context, 1));
+  AddLlvmType(IceType_i8, llvm::IntegerType::get(Context, 8));
+  AddLlvmType(IceType_i16, llvm::IntegerType::get(Context, 16));
+  AddLlvmType(IceType_i32, llvm::IntegerType::get(Context, 32));
+  AddLlvmType(IceType_i64, llvm::IntegerType::get(Context, 64));
+  AddLlvmType(IceType_f32, llvm::Type::getFloatTy(Context));
+  AddLlvmType(IceType_f64, llvm::Type::getDoubleTy(Context));
+  AddLlvmType(IceType_v4i1, llvm::VectorType::get(LlvmTypes[IceType_i1], 4));
+  AddLlvmType(IceType_v8i1, llvm::VectorType::get(LlvmTypes[IceType_i1], 8));
+  AddLlvmType(IceType_v16i1, llvm::VectorType::get(LlvmTypes[IceType_i1], 16));
+  AddLlvmType(IceType_v16i8, llvm::VectorType::get(LlvmTypes[IceType_i8], 16));
+  AddLlvmType(IceType_v8i16, llvm::VectorType::get(LlvmTypes[IceType_i16], 8));
+  AddLlvmType(IceType_v4i32, llvm::VectorType::get(LlvmTypes[IceType_i32], 4));
+  AddLlvmType(IceType_v4f32, llvm::VectorType::get(LlvmTypes[IceType_f32], 4));
+  assert(LlvmTypes.size() == IceType_NUM);
+}
+
+void TypeConverter::AddLlvmType(Type Ty, llvm::Type *LlvmTy) {
+  assert(Ty == LlvmTypes.size());
+  LlvmTypes.push_back(LlvmTy);
+  Llvm2IceMap[LlvmTy] = Ty;
+}
+
+Type TypeConverter::convertToIceTypeOther(llvm::Type *LlvmTy) const {
+  switch (LlvmTy->getTypeID()) {
+  case llvm::Type::PointerTyID:
+  case llvm::Type::FunctionTyID:
+    return getIcePointerType();
+  default:
+    return Ice::IceType_NUM;
+  }
+}
+
+llvm::Type *TypeConverter::getLlvmIntegerType(unsigned NumBits) const {
+  switch (NumBits) {
+  case 1:
+    return LlvmTypes.at(IceType_i1);

[Jim Stichnoth, 2014/07/17 23:00:33]

Any reason not to use LlvmTypes[] instead of LlvmTypes.at(), like is done above
in the TypeConverter ctor?  Same comment for the two instances in the .h file.

[Karl, 2014/07/18 20:27:42]

Fixing to use "[]", since during the constructor we checked if all ICE types
were added.

+  case 8:
+    return LlvmTypes.at(IceType_i8);
+  case 16:
+    return LlvmTypes.at(IceType_i16);
+  case 32:
+    return LlvmTypes.at(IceType_i32);
+  case 64:
+    return LlvmTypes.at(IceType_i64);
+  default:
+    return NULL;
+  }
+}
+
+llvm::Type *TypeConverter::getLlvmVectorType(unsigned Size, Type Ty) const {
+  switch (Ty) {
+  case IceType_i1:
+    switch (Size) {
+    case 4:
+      return convertToLlvmType(IceType_v4i1);
+    case 8:
+      return convertToLlvmType(IceType_v8i1);
+    case 16:
+      return convertToLlvmType(IceType_v16i1);
+    default:
+      break;
+    }
+    break;
+  case IceType_i8:
+    if (Size == 16)
+      return convertToLlvmType(IceType_v16i8);
+    break;
+  case IceType_i16:
+    if (Size == 8)
+      return convertToLlvmType(IceType_v8i16);
+    break;
+  case IceType_i32:
+    if (Size == 4)
+      return convertToLlvmType(IceType_v4i32);
+    break;
+  case IceType_f32:
+    if (Size == 4)
+      return convertToLlvmType(IceType_v4f32);
+    break;
+  default:
+    break;
+  }
+  return NULL;
+}
+
+} // end of Ice namespace.