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comparison src/share/vm/opto/loopopts.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 a761c2d3b76a
children d1605aabd0a1 8d191a7697e2
comparison
equal deleted inserted replaced
163:885ed790ecf0 164:c436414a719e
462 cost++; // Probably encodes as 2 CMOV's 462 cost++; // Probably encodes as 2 CMOV's
463 case T_INT: // These all CMOV fine 463 case T_INT: // These all CMOV fine
464 case T_FLOAT: 464 case T_FLOAT:
465 case T_DOUBLE: 465 case T_DOUBLE:
466 case T_ADDRESS: // (RawPtr) 466 case T_ADDRESS: // (RawPtr)
467 case T_NARROWOOP:
467 cost++; 468 cost++;
468 break; 469 break;
469 case T_OBJECT: { // Base oops are OK, but not derived oops 470 case T_OBJECT: { // Base oops are OK, but not derived oops
470 const TypeOopPtr *tp = phi->type()->isa_oopptr(); 471 const TypeOopPtr *tp = phi->type()->isa_oopptr();
471 // Derived pointers are Bad (tm): what's the Base (for GC purposes) of a 472 // Derived pointers are Bad (tm): what's the Base (for GC purposes) of a