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diff src/cpu/x86/vm/relocInfo_x86.cpp @ 164:c436414a719e

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6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions Summary: Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions. Reviewed-by: never, rasbold
author kvn
date Wed, 21 May 2008 13:46:23 -0700
parents a61af66fc99e
children d1605aabd0a1
line wrap: on
line diff
--- a/src/cpu/x86/vm/relocInfo_x86.cpp	Wed May 21 10:45:07 2008 -0700
+++ b/src/cpu/x86/vm/relocInfo_x86.cpp	Wed May 21 13:46:23 2008 -0700
@@ -30,11 +30,15 @@
 #ifdef AMD64
   x += o;
   typedef Assembler::WhichOperand WhichOperand;
-  WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm64, call32
+  WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm64, call32, narrow oop
   assert(which == Assembler::disp32_operand ||
+         which == Assembler::narrow_oop_operand ||
          which == Assembler::imm64_operand, "format unpacks ok");
   if (which == Assembler::imm64_operand) {
     *pd_address_in_code() = x;
+  } else if (which == Assembler::narrow_oop_operand) {
+    address disp = Assembler::locate_operand(addr(), which);
+    *(int32_t*) disp = oopDesc::encode_heap_oop((oop)x);
   } else {
     // Note:  Use runtime_call_type relocations for call32_operand.
     address ip = addr();