made C2 work with -XX:+CompressedOoops

this version still dumb about loading 32 bit narrow oop or narrow
klass constants into registers. it currently loads the 64-bit
uncompressed constant and then encodes it into 32 bits. that's because
the relocate code doesn't yet know how to spot a 32-bit load vs a 64
bit load and so cannot guarantee to relocate the load correctly (it
assumes such reloc operations are 64 bit). This needs fixing.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cpu/aarch64/vm/macroAssembler_aarch64.hpp b/src/cpu/aarch64/vm/macroAssembler_aarch64.hpp
index d5a22c026..cd344e224 100644
--- a/src/cpu/aarch64/vm/macroAssembler_aarch64.hpp
+++ b/src/cpu/aarch64/vm/macroAssembler_aarch64.hpp
@@ -711,9 +711,9 @@ public:
   void encode_heap_oop_not_null(Register dst, Register src);
   void decode_heap_oop_not_null(Register dst, Register src);
 
+  void set_narrow_oop(Register dst, jobject obj);
   // currently unimplemented
 #if 0
-  void set_narrow_oop(Register dst, jobject obj);
   void set_narrow_oop(Address dst, jobject obj);
   void cmp_narrow_oop(Register dst, jobject obj);
   void cmp_narrow_oop(Address dst, jobject obj);
@@ -724,9 +724,9 @@ public:
   void encode_klass_not_null(Register dst, Register src);
   void decode_klass_not_null(Register dst, Register src);
 
+  void set_narrow_klass(Register dst, Klass* k);
   // currently unimplemented
 #if 0
-  void set_narrow_klass(Register dst, Klass* k);
   void set_narrow_klass(Address dst, Klass* k);
   void cmp_narrow_klass(Register dst, Klass* k);
   void cmp_narrow_klass(Address dst, Klass* k);