[WIP] Implement live variable analysis

Signed-off-by: Adam Laszlo Kulcsar <[email protected]>

Author: kulcsaradam

src/interpreter/ByteCode.h

@@ -17,6 +17,7 @@
 #ifndef __WalrusByteCode__
 #define __WalrusByteCode__
 
+#include "Walrus.h"
 #if !defined(NDEBUG)
 #include <cinttypes>
 #include "runtime/Module.h"
@@ -663,6 +664,7 @@ class BinaryOperation : public ByteCode {
     const ByteCodeStackOffset* srcOffset() const { return m_srcOffset; }
     ByteCodeStackOffset dstOffset() const { return m_dstOffset; }
     void setDstOffset(ByteCodeStackOffset o) { m_dstOffset = o; }
+    void setSrcOffset(ByteCodeStackOffset o, size_t index) { m_srcOffset[index] = o; }
 #if !defined(NDEBUG)
     void dump(size_t pos)
     {
@@ -705,6 +707,14 @@ class UnaryOperation : public ByteCode {
     }
     ByteCodeStackOffset srcOffset() const { return m_srcOffset; }
     ByteCodeStackOffset dstOffset() const { return m_dstOffset; }
+    void setDstOffset(ByteCodeStackOffset newOffset)
+    {
+        m_dstOffset = newOffset;
+    }
+    void setSrcOffset(ByteCodeStackOffset newOffset)
+    {
+        m_srcOffset = newOffset;
+    }
 #if !defined(NDEBUG)
     void dump(size_t pos)
     {
@@ -874,6 +884,14 @@ class Move32 : public ByteCode {
 
     ByteCodeStackOffset srcOffset() const { return m_srcOffset; }
     ByteCodeStackOffset dstOffset() const { return m_dstOffset; }
+    void setDstOffset(ByteCodeStackOffset newOffset)
+    {
+        m_dstOffset = newOffset;
+    }
+    void setSrcOffset(ByteCodeStackOffset newOffset)
+    {
+        m_srcOffset = newOffset;
+    }
 
 #if !defined(NDEBUG)
     void dump(size_t pos)
@@ -2037,6 +2055,7 @@ class GlobalGet32 : public ByteCode {
     }
 
     ByteCodeStackOffset dstOffset() const { return m_dstOffset; }
+    void setDstOffset(ByteCodeStackOffset o) { m_dstOffset = o; }
     uint32_t index() const { return m_index; }
 
 #if !defined(NDEBUG)
@@ -2255,7 +2274,7 @@ class End : public ByteCode {
     {
     }
 
-    ByteCodeStackOffset* resultOffsets() const
+    ByteCodeStackOffset* resultOffsets()
     {
         return reinterpret_cast<ByteCodeStackOffset*>(reinterpret_cast<size_t>(this) + sizeof(End));
     }