Replace optimizer-special opcodes with 0xaf instead of INVALID. (#5680)

Replace optimizer-special opcodes with 0xaf instead of INVALID.
ethereum · Jul 17, 2019 · a236742 · a236742
2 parents 0247ed2 + 3f0b92c
commit a236742
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diff --git a/libaleth-interpreter/VMOpt.cpp b/libaleth-interpreter/VMOpt.cpp
@@ -72,7 +72,7 @@ void VM::optimize()
         )
         {
             TRACE_OP(1, pc, op);
-            m_code[pc] = (byte)Instruction::INVALID;
+            m_code[pc] = (byte)Instruction::UNDEFINED;
         }
 
         if (op == Instruction::JUMPDEST)

diff --git a/libevm/Instruction.h b/libevm/Instruction.h
@@ -172,6 +172,7 @@ enum class Instruction : uint8_t
     PUSHC = 0xac,  ///< push value from constant pool
     JUMPC,         ///< alter the program counter - pre-verified
     JUMPCI,        ///< conditionally alter the program counter - pre-verified
+    UNDEFINED,     ///< Replaces PUSHC/JUMPC/JUMPCI in the original code
 
     JUMPTO = 0xb0,  ///< alter the program counter to a jumpdest
     JUMPIF,         ///< conditionally alter the program counter