Initial skeleton of Subzero.
This includes just enough code to build the high-level ICE IR and dump it back out again. There is a script szdiff.py that does a fuzzy diff of the input and output for verification. See the comment in szdiff.py for a description of the fuzziness.
Building llvm2ice requires LLVM headers, libs, and tools (e.g. FileCheck) to be present. These default to something like llvm_i686_linux_work/Release+Asserts/ based on the checked-out and built pnacl-llvm code; I'll try to figure out how to more automatically detect the build configuration.
"make check" runs the lit tests.
This CL has under 2000 lines of "interesting" Ice*.{h,cpp} code, plus 600 lines of llvm2ice.cpp driver code, and the rest is tests.
Here is the high-level mapping of source files to functionality:
IceDefs.h, IceTypes.h, IceTypes.cpp:
Commonly used types and utilities.
IceCfg.h, IceCfg.cpp:
Operations at the function level.
IceCfgNode.h, IceCfgNode.cpp:
Operations on basic blocks (nodes).
IceInst.h, IceInst.cpp:
Operations on instructions.
IceOperand.h, IceOperand.cpp:
Operations on operands, such as stack locations, physical registers, and constants.
BUG= none
R=jfb@chromium.org
Review URL: https://codereview.chromium.org/205613002
diff --git a/src/IceTypes.h b/src/IceTypes.h
new file mode 100644
index 0000000..b3d28c3
--- /dev/null
+++ b/src/IceTypes.h
@@ -0,0 +1,36 @@
+//===- subzero/src/IceTypes.h - Primitive ICE types -------------*- C++ -*-===//
+//
+// The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares a few properties of the primitive types allowed
+// in Subzero. Every Subzero source file is expected to include
+// IceTypes.h.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_ICETYPES_H
+#define SUBZERO_SRC_ICETYPES_H
+
+#include "IceTypes.def"
+
+namespace Ice {
+
+enum Type {
+#define X(tag, size, align, str) tag,
+ ICETYPE_TABLE
+#undef X
+};
+
+size_t typeWidthInBytes(Type Ty);
+size_t typeAlignInBytes(Type Ty);
+
+template <> Ostream &operator<<(class Ostream &Str, const Type &Ty);
+
+} // end of namespace Ice
+
+#endif // SUBZERO_SRC_ICETYPES_H
