Mercurial > hg > graal-jvmci-8
comparison src/share/vm/c1/c1_Runtime1.cpp @ 2002:ac637b7220d1
6985015: C1 needs to support compressed oops
Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.
Reviewed-by: twisti, kvn, never, phh
author | iveresov |
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date | Tue, 30 Nov 2010 23:23:40 -0800 |
parents | f95d63e2154a |
children | 06f017f7daa7 8012aa3ccede |
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1972:f95d63e2154a | 2002:ac637b7220d1 |
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1172 // Potential problem: memmove is not guaranteed to be word atomic | 1172 // Potential problem: memmove is not guaranteed to be word atomic |
1173 // Revisit in Merlin | 1173 // Revisit in Merlin |
1174 memmove(dst_addr, src_addr, length << l2es); | 1174 memmove(dst_addr, src_addr, length << l2es); |
1175 return ac_ok; | 1175 return ac_ok; |
1176 } else if (src->is_objArray() && dst->is_objArray()) { | 1176 } else if (src->is_objArray() && dst->is_objArray()) { |
1177 if (UseCompressedOops) { // will need for tiered | 1177 if (UseCompressedOops) { |
1178 narrowOop *src_addr = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos); | 1178 narrowOop *src_addr = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos); |
1179 narrowOop *dst_addr = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos); | 1179 narrowOop *dst_addr = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos); |
1180 return obj_arraycopy_work(src, src_addr, dst, dst_addr, length); | 1180 return obj_arraycopy_work(src, src_addr, dst, dst_addr, length); |
1181 } else { | 1181 } else { |
1182 oop *src_addr = objArrayOop(src)->obj_at_addr<oop>(src_pos); | 1182 oop *src_addr = objArrayOop(src)->obj_at_addr<oop>(src_pos); |
1208 BarrierSet* bs = Universe::heap()->barrier_set(); | 1208 BarrierSet* bs = Universe::heap()->barrier_set(); |
1209 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | 1209 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
1210 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); | 1210 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); |
1211 if (UseCompressedOops) { | 1211 if (UseCompressedOops) { |
1212 bs->write_ref_array_pre((narrowOop*)dst, num); | 1212 bs->write_ref_array_pre((narrowOop*)dst, num); |
1213 Copy::conjoint_oops_atomic((narrowOop*) src, (narrowOop*) dst, num); | |
1213 } else { | 1214 } else { |
1214 bs->write_ref_array_pre((oop*)dst, num); | 1215 bs->write_ref_array_pre((oop*)dst, num); |
1215 } | 1216 Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num); |
1216 Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num); | 1217 } |
1217 bs->write_ref_array(dst, num); | 1218 bs->write_ref_array(dst, num); |
1218 JRT_END | 1219 JRT_END |
1219 | 1220 |
1220 | 1221 |
1221 #ifndef PRODUCT | 1222 #ifndef PRODUCT |