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comparison src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp @ 6848:8e47bac5643a

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7054512: Compress class pointers after perm gen removal Summary: support of compress class pointers in the compilers. Reviewed-by: kvn, twisti
author roland
date Tue, 09 Oct 2012 10:11:38 +0200
parents 7eca5de9e0b6
children 94e9408dbf50
comparison
equal deleted inserted replaced
6847:65d07d9ee446 6848:8e47bac5643a
103 if (UseCompressedOops) { 103 if (UseCompressedOops) {
104 if (dst->is_address() && !dst->is_stack() && (dst->type() == T_OBJECT || dst->type() == T_ARRAY)) return false; 104 if (dst->is_address() && !dst->is_stack() && (dst->type() == T_OBJECT || dst->type() == T_ARRAY)) return false;
105 if (src->is_address() && !src->is_stack() && (src->type() == T_OBJECT || src->type() == T_ARRAY)) return false; 105 if (src->is_address() && !src->is_stack() && (src->type() == T_OBJECT || src->type() == T_ARRAY)) return false;
106 } 106 }
107 107
108 if (UseCompressedKlassPointers) {
109 if (src->is_address() && !src->is_stack() && src->type() == T_ADDRESS &&
110 src->as_address_ptr()->disp() == oopDesc::klass_offset_in_bytes()) return false;
111 }
112
108 if (dst->is_register()) { 113 if (dst->is_register()) {
109 if (src->is_address() && Assembler::is_simm13(src->as_address_ptr()->disp())) { 114 if (src->is_address() && Assembler::is_simm13(src->as_address_ptr()->disp())) {
110 return !PatchALot; 115 return !PatchALot;
111 } else if (src->is_single_stack()) { 116 } else if (src->is_single_stack()) {
112 return true; 117 return true;
967 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi()); 972 __ ld(base, offset + hi_word_offset_in_bytes, to_reg->as_register_hi());
968 } 973 }
969 #endif 974 #endif
970 } 975 }
971 break; 976 break;
972 case T_METADATA: 977 case T_METADATA: __ ld_ptr(base, offset, to_reg->as_register()); break;
973 case T_ADDRESS: __ ld_ptr(base, offset, to_reg->as_register()); break; 978 case T_ADDRESS:
979 if (offset == oopDesc::klass_offset_in_bytes()) {
980 __ lduw(base, offset, to_reg->as_register());
981 #ifdef _LP64
982 if (UseCompressedKlassPointers) {
983 __ decode_klass_not_null(to_reg->as_register());
984 }
985 #endif
986 } else {
987 __ ld_ptr(base, offset, to_reg->as_register());
988 }
989 break;
974 case T_ARRAY : // fall through 990 case T_ARRAY : // fall through
975 case T_OBJECT: 991 case T_OBJECT:
976 { 992 {
977 if (UseCompressedOops && !wide) { 993 if (UseCompressedOops && !wide) {
978 __ lduw(base, offset, to_reg->as_register()); 994 __ lduw(base, offset, to_reg->as_register());
2342 Label known_ok, halt; 2358 Label known_ok, halt;
2343 metadata2reg(op->expected_type()->constant_encoding(), tmp); 2359 metadata2reg(op->expected_type()->constant_encoding(), tmp);
2344 if (UseCompressedKlassPointers) { 2360 if (UseCompressedKlassPointers) {
2345 // tmp holds the default type. It currently comes uncompressed after the 2361 // tmp holds the default type. It currently comes uncompressed after the
2346 // load of a constant, so encode it. 2362 // load of a constant, so encode it.
2347 __ encode_heap_oop(tmp); 2363 __ encode_klass_not_null(tmp);
2348 // load the raw value of the dst klass, since we will be comparing 2364 // load the raw value of the dst klass, since we will be comparing
2349 // uncompressed values directly. 2365 // uncompressed values directly.
2350 __ lduw(dst, oopDesc::klass_offset_in_bytes(), tmp2); 2366 __ lduw(dst, oopDesc::klass_offset_in_bytes(), tmp2);
2351 if (basic_type != T_OBJECT) { 2367 if (basic_type != T_OBJECT) {
2352 __ cmp(tmp, tmp2); 2368 __ cmp(tmp, tmp2);