Mercurial > hg > graal-compiler
comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 6517:2dfab5607b3d
fix hashCode changes: port to x64
| author | Lukas Stadler <lukas.stadler@jku.at> |
|---|---|
| date | Fri, 05 Oct 2012 13:44:26 +0200 |
| parents | 957c266d8bc5 |
| children | ea845fd3c820 |
comparison
equal
deleted
inserted
replaced
| 6516:174805dea3fc | 6517:2dfab5607b3d |
|---|---|
| 1967 | 1967 |
| 1968 __ bind(hit); | 1968 __ bind(hit); |
| 1969 | 1969 |
| 1970 int vep_offset = ((intptr_t)__ pc()) - start; | 1970 int vep_offset = ((intptr_t)__ pc()) - start; |
| 1971 | 1971 |
| 1972 #ifdef GRAAL | |
| 1973 if (InlineObjectHash && method->intrinsic_id() == vmIntrinsics::_hashCode) { | |
| 1974 // Object.hashCode can pull the hashCode from the header word | |
| 1975 // instead of doing a full VM transition once it's been computed. | |
| 1976 // Since hashCode is usually polymorphic at call sites we can't do | |
| 1977 // this optimization at the call site without a lot of work. | |
| 1978 Label slowCase; | |
| 1979 Register result = rax; | |
| 1980 | |
| 1981 __ movptr(result, Address(receiver, oopDesc::mark_offset_in_bytes())); | |
| 1982 | |
| 1983 // check if locked | |
| 1984 __ testptr(result, markOopDesc::unlocked_value); | |
| 1985 __ jcc (Assembler::zero, slowCase); | |
| 1986 | |
| 1987 if (UseBiasedLocking) { | |
| 1988 // Check if biased and fall through to runtime if so | |
| 1989 __ testptr(result, markOopDesc::biased_lock_bit_in_place); | |
| 1990 __ jcc (Assembler::notZero, slowCase); | |
| 1991 } | |
| 1992 | |
| 1993 // get hash | |
| 1994 __ shrptr(result, markOopDesc::hash_shift); | |
| 1995 __ andptr(result, markOopDesc::hash_mask); | |
| 1996 // test if hashCode exists | |
| 1997 __ jcc (Assembler::zero, slowCase); | |
| 1998 __ ret(0); | |
| 1999 | |
| 2000 __ bind (slowCase); | |
| 2001 } | |
| 2002 #endif // GRAAL | |
| 2003 | |
| 1972 // The instruction at the verified entry point must be 5 bytes or longer | 2004 // The instruction at the verified entry point must be 5 bytes or longer |
| 1973 // because it can be patched on the fly by make_non_entrant. The stack bang | 2005 // because it can be patched on the fly by make_non_entrant. The stack bang |
| 1974 // instruction fits that requirement. | 2006 // instruction fits that requirement. |
| 1975 | 2007 |
| 1976 // Generate stack overflow check | 2008 // Generate stack overflow check |