Simplify constant pool usage in arm64 code generator (by removing extra argument

runtime/vm/code_patcher_arm64_test.cc

Index: runtime/vm/code_patcher_arm64_test.cc
diff --git a/runtime/vm/code_patcher_arm64_test.cc b/runtime/vm/code_patcher_arm64_test.cc
index c4ba10ba27eb2b30586e6f0459996b32f453b452..6f98aac1a7b02e34c029f15669812caa572335c1 100644
--- a/runtime/vm/code_patcher_arm64_test.cc
+++ b/runtime/vm/code_patcher_arm64_test.cc
@@ -39,7 +39,10 @@ ASSEMBLER_TEST_GENERATE(IcDataAccess, assembler) {
                                                          15,
                                                          1));
 
-  __ LoadObject(R5, ic_data, PP);
+  // Code accessing pp is generated, but not executed. Uninitialized pp is OK.
+  __ set_constant_pool_allowed(true);
+
+  __ LoadObject(R5, ic_data);
   ExternalLabel target_label(StubCode::OneArgCheckInlineCacheEntryPoint());
   __ BranchLinkPatchable(&target_label);
   __ ret();