s390 change

offamitkumar · Nov 19, 2024 · 3327eef · 3327eef
1 parent b12c5b4
commit 3327eef
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Showing 3 changed files with 4 additions and 11 deletions.
diff --git a/src/hotspot/cpu/s390/c2_MacroAssembler_s390.cpp b/src/hotspot/cpu/s390/c2_MacroAssembler_s390.cpp
@@ -42,13 +42,6 @@ void C2_MacroAssembler::fast_unlock_lightweight(Register obj, Register box, Regi
   compiler_fast_unlock_lightweight_object(obj, box, temp1, temp2);
 }
 
-void C2_MacroAssembler::load_narrow_klass_compact_c2(Register dst, Address src) {
-  // The incoming address is pointing into obj-start + klass_offset_in_bytes. We need to extract
-  // obj-start, so that we can load from the object's mark-word instead.
-  z_lg(dst, src.plus_disp(-oopDesc::klass_offset_in_bytes()));
-  z_srlg(dst, dst, markWord::klass_shift); // TODO: could be z_sra
-}
-
 //------------------------------------------------------
 //   Special String Intrinsics. Implementation
 //------------------------------------------------------

diff --git a/src/hotspot/cpu/s390/c2_MacroAssembler_s390.hpp b/src/hotspot/cpu/s390/c2_MacroAssembler_s390.hpp
@@ -33,8 +33,6 @@
   void fast_lock_lightweight(Register obj, Register box, Register temp1, Register temp2);
   void fast_unlock_lightweight(Register obj, Register box, Register temp1, Register temp2);
 
-  void load_narrow_klass_compact_c2(Register dst, Address src);
-
   //-------------------------------------------
   // Special String Intrinsics Implementation.
   //-------------------------------------------

diff --git a/src/hotspot/cpu/s390/s390.ad b/src/hotspot/cpu/s390/s390.ad
@@ -4726,11 +4726,13 @@ instruct loadNKlassCompactHeaders(iRegN dst, memory mem, flagsReg cr) %{
   effect(KILL cr);
   ins_cost(MEMORY_REF_COST);
   format %{ "load_narrow_klass_compact $dst,$mem \t# compressed class ptr" %}
-  // TODO: size()
+  size(8); // (z_l)4 + (z_srl)4
   ins_encode %{
     __ block_comment("load_narrow_klass_compact_c2 {");
-    __ load_narrow_klass_compact_c2($dst$$Register, $mem$$Address);
+    __ z_l($dst$$Register, $mem$$Address);
+    __ z_srl($dst$$Register, markWord::klass_shift);
     __ block_comment("} load_narrow_klass_compact");
+
   %}
   ins_pipe(pipe_class_dummy);
 %}