[interpreter] Add a register operand to ToNumber

src/interpreter/bytecodes.h

Index: src/interpreter/bytecodes.h
diff --git a/src/interpreter/bytecodes.h b/src/interpreter/bytecodes.h
index 75c38af16608b148e5e568c27493d2d9d3aeb4e2..e4bbed349287ab090e410264dd531da99bc70c7f 100644
--- a/src/interpreter/bytecodes.h
+++ b/src/interpreter/bytecodes.h
@@ -212,7 +212,7 @@ namespace interpreter {
                                                                                \
   /* Cast operators */                                                         \
   V(ToName, AccumulatorUse::kReadWrite)                                        \
-  V(ToNumber, AccumulatorUse::kReadWrite)                                      \
+  V(ToNumber, AccumulatorUse::kRead, OperandType::kRegOut)                     \

[rmcilroy, 2016/07/21 09:31:48]

You need to modify BytecodeGraphBuilder as well, otherwise optimized code will
break. 

Do no tests break with this change? If so, could you add something to
test-run-bytecode-graph-builder which would break until you update it.

[klaasb, 2016/07/21 10:55:19]

Done.
Some did actually, sorry.

   V(ToObject, AccumulatorUse::kReadWrite)                                      \
                                                                                \
   /* Literals */                                                               \