Mercurial > hg > truffle
comparison src/share/vm/ci/ciInstanceKlass.cpp @ 10278:6f3fd5150b67
6934604: enable parts of EliminateAutoBox by default
Summary: Resurrected autobox elimination code and enabled part of it by default.
Reviewed-by: roland, twisti
| author | kvn |
|---|---|
| date | Wed, 08 May 2013 15:08:01 -0700 |
| parents | fcc9e7681d63 |
| children | 836a62f43af9 b2e698d2276c |
comparison
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| 10277:aabf54ccedb1 | 10278:6f3fd5150b67 |
|---|---|
| 209 return equals(CURRENT_ENV->Object_klass()); | 209 return equals(CURRENT_ENV->Object_klass()); |
| 210 } | 210 } |
| 211 | 211 |
| 212 // ------------------------------------------------------------------ | 212 // ------------------------------------------------------------------ |
| 213 // ciInstanceKlass::uses_default_loader | 213 // ciInstanceKlass::uses_default_loader |
| 214 bool ciInstanceKlass::uses_default_loader() { | 214 bool ciInstanceKlass::uses_default_loader() const { |
| 215 // Note: We do not need to resolve the handle or enter the VM | 215 // Note: We do not need to resolve the handle or enter the VM |
| 216 // in order to test null-ness. | 216 // in order to test null-ness. |
| 217 return _loader == NULL; | 217 return _loader == NULL; |
| 218 } | |
| 219 | |
| 220 // ------------------------------------------------------------------ | |
| 221 | |
| 222 /** | |
| 223 * Return basic type of boxed value for box klass or T_OBJECT if not. | |
| 224 */ | |
| 225 BasicType ciInstanceKlass::box_klass_type() const { | |
| 226 if (uses_default_loader() && is_loaded()) { | |
| 227 return SystemDictionary::box_klass_type(get_Klass()); | |
| 228 } else { | |
| 229 return T_OBJECT; | |
| 230 } | |
| 231 } | |
| 232 | |
| 233 /** | |
| 234 * Is this boxing klass? | |
| 235 */ | |
| 236 bool ciInstanceKlass::is_box_klass() const { | |
| 237 return is_java_primitive(box_klass_type()); | |
| 238 } | |
| 239 | |
| 240 /** | |
| 241 * Is this boxed value offset? | |
| 242 */ | |
| 243 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { | |
| 244 BasicType bt = box_klass_type(); | |
| 245 return is_java_primitive(bt) && | |
| 246 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); | |
| 218 } | 247 } |
| 219 | 248 |
| 220 // ------------------------------------------------------------------ | 249 // ------------------------------------------------------------------ |
| 221 // ciInstanceKlass::is_in_package | 250 // ciInstanceKlass::is_in_package |
| 222 // | 251 // |