[Interpreter] Preserve source positions in peephole optimizer.

test/cctest/interpreter/bytecode_expectations/PrimitiveExpressions.golden

 #
 # Autogenerated by generate-bytecode-expectations.
 #
 
 ---
 pool type: number
 execute: yes
 wrap: yes
 
 ---
 snippet: "
   var x = 0; return x;
 "
 frame size: 1
 parameter count: 1
-bytecode array length: 5
+bytecode array length: 6
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaZero),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
+  /*   45 S> */ B(Nop),
   /*   55 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 0; return x + 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 11
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaZero),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(Add), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 0; return x - 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 11
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaZero),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(Sub), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 4; return x * 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(4),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(Mul), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 4; return x / 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(4),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(Div), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 4; return x % 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(4),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(Mod), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 1; return x | 2;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(2),
                 B(BitwiseOr), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 1; return x ^ 2;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(2),
                 B(BitwiseXor), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 1; return x & 2;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Star), R(1),
                 B(LdaSmi), U8(2),
                 B(BitwiseAnd), R(1),
   /*   59 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 10; return x << 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(10),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   46 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(ShiftLeft), R(1),
   /*   61 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 10; return x >> 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(10),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   46 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(ShiftRight), R(1),
   /*   61 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 10; return x >>> 3;
 "
 frame size: 2
 parameter count: 1
 bytecode array length: 12
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(10),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   46 S> */ B(Star), R(1),
                 B(LdaSmi), U8(3),
                 B(ShiftRightLogical), R(1),
   /*   62 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]
 
 ---
 snippet: "
   var x = 0; return (x, 3);
 "
 frame size: 1
 parameter count: 1
 bytecode array length: 7
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaZero),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(LdaSmi), U8(3),
   /*   60 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]