[interpreter] Introduce fused bytecodes for common sequences.

test/cctest/interpreter/bytecode_expectations/IfConditions.golden

 #
 # Autogenerated by generate-bytecode-expectations.
 #
 
 ---
 pool type: mixed
 execute: yes
 wrap: no
 test function name: f
 
@@ skipping 646 matching lines @@
     if (a <= b) { return 1; }
     if (a >= b) { return 1; }
     if (a in b) { return 1; }
     if (a instanceof b) { return 1; }
     return 0;
   }
   f(1, 1);
 "
 frame size: 6
 parameter count: 3
-bytecode array length: 226
+bytecode array length: 227
 bytecodes: [
   /*   10 E> */ B(StackCheck),
   /*   21 S> */ B(Ldar), R(arg0),
                 B(Star), R(3),
   /*   30 E> */ B(Ldar), R(arg1),
   /*   27 E> */ B(TestEqual), R(3),
                 B(JumpIfFalse), U8(5),
   /*   35 S> */ B(LdaSmi), U8(1),
   /*  262 S> */ B(Return),
   /*   49 S> */ B(Ldar), R(arg0),
@@ skipping 48 matching lines @@
                 B(Jump), U8(16),
   /*  222 S> */ B(LdaSmi), U8(61),
                 B(Star), R(3),
                 B(LdaConstant), U8(0),
                 B(Star), R(4),
                 B(CallRuntime), U16(Runtime::kNewTypeError), R(3), U8(2),
   /*  222 E> */ B(Throw),
                 B(Ldar), R(1),
                 B(Star), R(3),
   /*  222 E> */ B(LdaConstant), U8(1),
-                B(KeyedLoadIC), R(3), U8(1),
-                B(Star), R(2),
+                B(LdrKeyedProperty), R(3), U8(1), R(2),
+                B(Ldar), R(2),
                 B(Star), R(3),
                 B(LdaUndefined),
                 B(TestEqualStrict), R(3),
                 B(JumpIfFalse), U8(55),
                 B(Ldar), R(1),
                 B(TypeOf),
                 B(Star), R(3),
                 B(LdaConstant), U8(2),
                 B(TestEqualStrict), R(3),
                 B(JumpIfFalse), U8(4),
@@ skipping 64 matching lines @@
   /*   69 S> */ B(LdaSmi), U8(-20),
   /*   85 S> */ B(Return),
                 B(LdaUndefined),
   /*   85 S> */ B(Return),
 ]
 constant pool: [
 ]
 handlers: [
 ]