Revert of [Interpreter] Add CallRuntime support to the interpreter.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index 4ba9f532ae2c6e79da97a8c38a9df6bfeeefc190..d0c05ad0ccb0fc713509825e58344d0cd80213ea 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1064,20 +1064,13 @@
   // fp: frame pointer    (restored after C call)
   // sp: stack pointer    (restored as callee's sp after C call)
   // cp: current context  (C callee-saved)
-  //
-  // If argv_in_register():
-  // a2: pointer to the first argument
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
-  if (!argv_in_register()) {
-    // Compute the argv pointer in a callee-saved register.
-    __ dsll(s1, a0, kPointerSizeLog2);
-    __ Daddu(s1, sp, s1);
-    __ Dsubu(s1, s1, kPointerSize);
-  } else {
-    __ mov(s1, a2);
-  }
+  // Compute the argv pointer in a callee-saved register.
+  __ dsll(s1, a0, kPointerSizeLog2);
+  __ Daddu(s1, sp, s1);
+  __ Dsubu(s1, s1, kPointerSize);
 
   // Enter the exit frame that transitions from JavaScript to C++.
   FrameScope scope(masm, StackFrame::MANUAL);
@@ -1157,12 +1150,8 @@
   // v0:v1: result
   // sp: stack pointer
   // fp: frame pointer
-  Register argc;
-  if (!argv_in_register()) {
-    // s0: still holds argc (callee-saved).
-    argc = s0;
-  }
-  __ LeaveExitFrame(save_doubles(), argc, true, EMIT_RETURN);
+  // s0: still holds argc (callee-saved).
+  __ LeaveExitFrame(save_doubles(), s0, true, EMIT_RETURN);
 
   // Handling of exception.
   __ bind(&exception_returned);