[vm] Fix IA32.

TEST=ci
Change-Id: I5559a1cf11d8ec5ae96deb87d098cf7ee9caac8d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/451401
Reviewed-by: Alexander Aprelev <[email protected]>
Commit-Queue: Ryan Macnak <[email protected]>

Author: rmacnak-google

runtime/vm/compiler/assembler/assembler_ia32.cc

@@ -1928,6 +1928,14 @@ void Assembler::PopRegister(Register r) {
   popl(r);
 }
 
+void Assembler::PushRegisters(const RegisterSet& registers) {
+  UNIMPLEMENTED();
+}
+
+void Assembler::PopRegisters(const RegisterSet& registers) {
+  UNIMPLEMENTED();
+}
+
 void Assembler::PushRegistersInOrder(std::initializer_list<Register> regs) {
   for (Register reg : regs) {
     PushRegister(reg);

runtime/vm/compiler/assembler/assembler_ia32.h

@@ -24,6 +24,10 @@
 
 namespace dart {
 
+// Forward declarations.
+class RegisterSet;
+class RuntimeEntry;
+
 namespace compiler {
 
 class Immediate : public ValueObject {
@@ -702,6 +706,8 @@ class Assembler : public AssemblerBase {
   void ExtendValue(Register to, Register from, OperandSize sz) override;
   void PushRegister(Register r);
   void PopRegister(Register r);
+  void PushRegisters(const RegisterSet& registers);
+  void PopRegisters(const RegisterSet& registers);
 
   void PushRegisterPair(Register r0, Register r1) {
     PushRegister(r1);