Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/lcm.cpp
src/share/vm/opto/lcm.cpp
- changeset 1082
- bd441136a5ce
- parent 1014
- 0fbdb4381b99
- parent 1077
- 660978a2a31a
- child 1116
- fbde8ec322d0
equal
deleted
inserted
replaced
| 1075:ba50942c8138 | 1082:bd441136a5ce |
|---|---|
| 156 if( val->bottom_type()->isa_narrowoop() && | 156 if( val->bottom_type()->isa_narrowoop() && |
| 157 MacroAssembler::needs_explicit_null_check(offset) ) | 157 MacroAssembler::needs_explicit_null_check(offset) ) |
| 158 continue; // Give up if offset is beyond page size | 158 continue; // Give up if offset is beyond page size |
| 159 // cannot reason about it; is probably not implicit null exception | 159 // cannot reason about it; is probably not implicit null exception |
| 160 } else { | 160 } else { |
| 161 const TypePtr* tptr = base->bottom_type()->is_ptr(); | 161 const TypePtr* tptr; |
| 162 if (UseCompressedOops && Universe::narrow_oop_shift() == 0) { | |
| 163 // 32-bits narrow oop can be the base of address expressions | |
| 164 tptr = base->bottom_type()->make_ptr(); | |
| 165 } else { | |
| 166 // only regular oops are expected here | |
| 167 tptr = base->bottom_type()->is_ptr(); | |
| 168 } | |
| 162 // Give up if offset is not a compile-time constant | 169 // Give up if offset is not a compile-time constant |
| 163 if( offset == Type::OffsetBot || tptr->_offset == Type::OffsetBot ) | 170 if( offset == Type::OffsetBot || tptr->_offset == Type::OffsetBot ) |
| 164 continue; | 171 continue; |
| 165 offset += tptr->_offset; // correct if base is offseted | 172 offset += tptr->_offset; // correct if base is offseted |
| 166 if( MacroAssembler::needs_explicit_null_check(offset) ) | 173 if( MacroAssembler::needs_explicit_null_check(offset) ) |
