Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/x86/vm/interp_masm_x86_64.cpp
src/cpu/x86/vm/interp_masm_x86_64.cpp
- changeset 548
- ba764ed4b6f2
- parent 435
- a61af66fc99e
- child 613
- 6d172e3548cb
- child 777
- 37f87013dfd8
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| 545:a49a647afe9a | 548:ba764ed4b6f2 |
|---|---|
| 265 movl(rcx, Address(rdi, arrayOopDesc::length_offset_in_bytes())); | 265 movl(rcx, Address(rdi, arrayOopDesc::length_offset_in_bytes())); |
| 266 // Skip to start of data; also clear Z flag incase rcx is zero | 266 // Skip to start of data; also clear Z flag incase rcx is zero |
| 267 addq(rdi, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); | 267 addq(rdi, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
| 268 // Scan rcx words at [rdi] for occurance of rax | 268 // Scan rcx words at [rdi] for occurance of rax |
| 269 // Set NZ/Z based on last compare | 269 // Set NZ/Z based on last compare |
| 270 repne_scan(); | 270 |
| 271 // Not equal? | 271 // this part is kind tricky, as values in supers array could be 32 or 64 bit wide |
| 272 jcc(Assembler::notEqual, not_subtype); | 272 // and we store values in objArrays always encoded, thus we need to encode value |
| 273 // before repne | |
| 274 if (UseCompressedOops) { | |
| 275 encode_heap_oop(rax); | |
| 276 repne_scanl(); | |
| 277 // Not equal? | |
| 278 jcc(Assembler::notEqual, not_subtype); | |
| 279 // decode heap oop here for movq | |
| 280 decode_heap_oop(rax); | |
| 281 } else { | |
| 282 repne_scanq(); | |
| 283 jcc(Assembler::notEqual, not_subtype); | |
| 284 } | |
| 273 // Must be equal but missed in cache. Update cache. | 285 // Must be equal but missed in cache. Update cache. |
| 274 movq(Address(Rsub_klass, sizeof(oopDesc) + | 286 movq(Address(Rsub_klass, sizeof(oopDesc) + |
| 275 Klass::secondary_super_cache_offset_in_bytes()), rax); | 287 Klass::secondary_super_cache_offset_in_bytes()), rax); |
| 276 jmp(ok_is_subtype); | 288 jmp(ok_is_subtype); |
| 277 | 289 |
| 278 bind(not_subtype); | 290 bind(not_subtype); |
| 291 // decode heap oop here for miss | |
| 292 if (UseCompressedOops) decode_heap_oop(rax); | |
| 279 profile_typecheck_failed(rcx); // blows rcx | 293 profile_typecheck_failed(rcx); // blows rcx |
| 280 } | 294 } |
| 281 | 295 |
| 282 | 296 |
| 283 // Java Expression Stack | 297 // Java Expression Stack |
