[Interpreter] Preserve source positions in peephole optimizer.

test/cctest/interpreter/bytecode_expectations/CountOperators.golden

Index: test/cctest/interpreter/bytecode_expectations/CountOperators.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/CountOperators.golden b/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
index db9dcf3a7b53272f84d1bebf679a8cbedddfe503..e5bc35faf0bc92ff782c8de26dd006cf5ab6f5e5 100644
--- a/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
+++ b/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
@@ -17,9 +17,9 @@ bytecode array length: 9
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Inc),
-  /*   54 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   57 S> */ B(Return),
 ]
 constant pool: [
@@ -37,7 +37,7 @@ bytecode array length: 14
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(ToNumber),
                 B(Star), R(1),
                 B(Inc),
@@ -60,9 +60,9 @@ bytecode array length: 9
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(Dec),
-  /*   54 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   57 S> */ B(Return),
 ]
 constant pool: [
@@ -80,7 +80,7 @@ bytecode array length: 14
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   45 S> */ B(ToNumber),
                 B(Star), R(1),
                 B(Dec),
@@ -104,7 +104,7 @@ bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(1),
                 B(Star), R(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   54 S> */ B(Star), R(1),
                 B(LoadIC), R(1), U8(1), U8(1),
                 B(ToNumber),
@@ -132,7 +132,7 @@ bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(1),
                 B(Star), R(1),
-  /*   42 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   54 S> */ B(Star), R(1),
                 B(LoadIC), R(1), U8(1), U8(1),
                 B(Dec),
@@ -156,10 +156,10 @@ bytecode array length: 33
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   45 S> */ B(LdaConstant), U8(0),
-  /*   45 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   60 S> */ B(CreateObjectLiteral), U8(1), U8(0), U8(1),
                 B(Star), R(2),
-  /*   60 E> */ B(Star), R(1),
+                B(Star), R(1),
   /*   72 S> */ B(Star), R(2),
   /*   81 E> */ B(Ldar), R(0),
                 B(Star), R(3),
@@ -188,10 +188,10 @@ bytecode array length: 28
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   45 S> */ B(LdaConstant), U8(0),
-  /*   45 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   60 S> */ B(CreateObjectLiteral), U8(1), U8(0), U8(1),
                 B(Star), R(2),
-  /*   60 E> */ B(Star), R(1),
+                B(Star), R(1),
   /*   72 S> */ B(Star), R(2),
   /*   83 E> */ B(Ldar), R(0),
                 B(Star), R(3),
@@ -221,7 +221,7 @@ bytecodes: [
   /*   42 S> */ B(LdaSmi), U8(1),
   /*   42 E> */ B(StaContextSlot), R(context), U8(4),
   /*   53 S> */ B(CreateClosure), U8(0), U8(0),
-  /*   53 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   78 S> */ B(LdaContextSlot), R(context), U8(4),
                 B(Inc),
   /*   87 E> */ B(StaContextSlot), R(context), U8(4),
@@ -247,7 +247,7 @@ bytecodes: [
   /*   42 S> */ B(LdaSmi), U8(1),
   /*   42 E> */ B(StaContextSlot), R(context), U8(4),
   /*   53 S> */ B(CreateClosure), U8(0), U8(0),
-  /*   53 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   78 S> */ B(LdaContextSlot), R(context), U8(4),
                 B(ToNumber),
                 B(Star), R(2),
@@ -272,9 +272,9 @@ bytecode array length: 28
 bytecodes: [
   /*   30 E> */ B(StackCheck),
   /*   44 S> */ B(LdaSmi), U8(1),
-  /*   44 E> */ B(Star), R(0),
+                B(Star), R(0),
   /*   55 S> */ B(CreateArrayLiteral), U8(0), U8(0), U8(3),
-  /*   55 E> */ B(Star), R(1),
+                B(Star), R(1),
   /*   63 S> */ B(Star), R(2),
                 B(Ldar), R(0),
                 B(ToNumber),