[interpreter] Add support for scalable operands.

test/cctest/interpreter/bytecode_expectations/TryCatch.golden

Index: test/cctest/interpreter/bytecode_expectations/TryCatch.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/TryCatch.golden b/test/cctest/interpreter/bytecode_expectations/TryCatch.golden
index 2450f90c5870c411fe65500f9356996dbbcdf463..ad54439cb89b3d7743c1243947d8c061a4cf2e79 100644
--- a/test/cctest/interpreter/bytecode_expectations/TryCatch.golden
+++ b/test/cctest/interpreter/bytecode_expectations/TryCatch.golden
@@ -17,7 +17,7 @@ bytecode array length: 38
 bytecodes: [
   B(StackCheck),
   B(Mov), R(context), R(1),
-  B(LdaSmi8), U8(1),
+  B(LdaSmi), U8(1),
   B(Return),
   B(Star), R(3),
   B(LdaConstant), U8(0),
@@ -29,7 +29,7 @@ bytecodes: [
   B(CallRuntime), U16(Runtime::kInterpreterClearPendingMessage), R(0), U8(0),
   B(Ldar), R(1),
   B(PushContext), R(0),
-  B(LdaSmi8), U8(2),
+  B(LdaSmi), U8(2),
   B(Return),
   B(LdaUndefined),
   B(Return),
@@ -53,7 +53,7 @@ bytecode array length: 81
 bytecodes: [
   B(StackCheck),
   B(Mov), R(context), R(2),
-  B(LdaSmi8), U8(1),
+  B(LdaSmi), U8(1),
   B(Star), R(0),
   B(Jump), U8(30),
   B(Star), R(4),
@@ -68,7 +68,7 @@ bytecodes: [
   B(PushContext), R(1),
   B(PopContext), R(1),
   B(Mov), R(context), R(2),
-  B(LdaSmi8), U8(2),
+  B(LdaSmi), U8(2),
   B(Star), R(0),
   B(Jump), U8(34),
   B(Star), R(4),
@@ -81,7 +81,7 @@ bytecodes: [
   B(CallRuntime), U16(Runtime::kInterpreterClearPendingMessage), R(0), U8(0),
   B(Ldar), R(2),
   B(PushContext), R(1),
-  B(LdaSmi8), U8(3),
+  B(LdaSmi), U8(3),
   B(Star), R(0),
   B(PopContext), R(1),
   B(LdaUndefined),