Starting to add intermediate representation (IR)

Right now none of this is hooked up, but I want to get things checked in incrementally rather than have along long-lived branches.

- Added placeholder declarations for IR representation of instructions, basic blocks, etc.

- Start adding a `lower-to-ir` pass to translate from AST representation to IR

Again: none of this is functional, so it shouldn't mess with existing users of the compiler.

1 files changed, 29 insertions, 0 deletions

diff --git a/source/slang/ir.cpp b/source/slang/ir.cpp
new file mode 100644
index 000000000..44eb7a727
--- /dev/null
+++ b/source/slang/ir.cpp
@@ -0,0 +1,29 @@
+// ir.cpp
+#include "ir.h"
+
+#include "../core/basic.h"
+
+namespace Slang
+{
+
+    IRType* IRBuilder::getBoolType()
+    {
+        SLANG_UNIMPLEMENTED_X("IR");
+    }
+
+    IRValue* IRBuilder::getBoolValue(bool value)
+    {
+        SLANG_UNIMPLEMENTED_X("IR");
+    }
+
+    IRValue* IRBuilder::getIntValue(IRType* type, IRIntegerValue value)
+    {
+        SLANG_UNIMPLEMENTED_X("IR");
+    }
+
+    IRValue* IRBuilder::getFloatValue(IRType* type, IRFloatingPointValue value)
+    {
+        SLANG_UNIMPLEMENTED_X("IR");
+    }
+
+}