Implemented missing move/exchange paths for x86

Rationale:
Recent SIMD register spilling bug fix exposed missing
cases in the x86 and x86_64 code generator for moving
and exchanging SIMD spill slots.

Test: run-test --host  -Xcompiler-option --instruction-set-features=sse4.1 623-checker-loop-regressions (32/64)

Bug: 70559970
Change-Id: Iae66d6874b93af5b2db80db70bce4b0f4a9b9f3f
diff --git a/compiler/optimizing/code_generator_x86.h b/compiler/optimizing/code_generator_x86.h
index 176e4df..40b7e3c 100644
--- a/compiler/optimizing/code_generator_x86.h
+++ b/compiler/optimizing/code_generator_x86.h
@@ -139,10 +139,10 @@
 
  private:
   void Exchange(Register reg, int mem);
-  void Exchange(int mem1, int mem2);
   void Exchange32(XmmRegister reg, int mem);
-  void MoveMemoryToMemory32(int dst, int src);
-  void MoveMemoryToMemory64(int dst, int src);
+  void Exchange128(XmmRegister reg, int mem);
+  void ExchangeMemory(int mem1, int mem2, int number_of_words);
+  void MoveMemoryToMemory(int dst, int src, int number_of_words);
 
   CodeGeneratorX86* const codegen_;