Mercurial > jdk8-mips64-public > hotspot / changeset

     1.1 --- a/src/share/vm/c1/c1_LIRGenerator.cpp	Tue Feb 12 16:14:28 2019 +0100
     1.2 +++ b/src/share/vm/c1/c1_LIRGenerator.cpp	Tue Feb 19 10:06:13 2019 +0100
     1.3 @@ -2305,6 +2305,10 @@
     1.4  
     1.5        // We can have generate one runtime check here. Let's start with
     1.6        // the offset check.
     1.7 +      // Allocate temp register to src and load it here, otherwise
     1.8 +      // control flow below may confuse register allocator.
     1.9 +      LIR_Opr src_reg = new_register(T_OBJECT);
    1.10 +      __ move(src.result(), src_reg);
    1.11        if (gen_offset_check) {
    1.12          // if (offset != referent_offset) -> continue
    1.13          // If offset is an int then we can do the comparison with the
    1.14 @@ -2327,14 +2331,14 @@
    1.15        if (gen_source_check) {
    1.16          // offset is a const and equals referent offset
    1.17          // if (source == null) -> continue
    1.18 -        __ cmp(lir_cond_equal, src.result(), LIR_OprFact::oopConst(NULL));
    1.19 +        __ cmp(lir_cond_equal, src_reg, LIR_OprFact::oopConst(NULL));
    1.20          __ branch(lir_cond_equal, T_OBJECT, Lcont->label());
    1.21        }
    1.22        LIR_Opr src_klass = new_register(T_OBJECT);
    1.23        if (gen_type_check) {
    1.24          // We have determined that offset == referent_offset && src != null.
    1.25          // if (src->_klass->_reference_type == REF_NONE) -> continue
    1.26 -        __ move(new LIR_Address(src.result(), oopDesc::klass_offset_in_bytes(), T_ADDRESS), src_klass);
    1.27 +        __ move(new LIR_Address(src_reg, oopDesc::klass_offset_in_bytes(), T_ADDRESS), src_klass);
    1.28          LIR_Address* reference_type_addr = new LIR_Address(src_klass, in_bytes(InstanceKlass::reference_type_offset()), T_BYTE);
    1.29          LIR_Opr reference_type = new_register(T_INT);
    1.30          __ move(reference_type_addr, reference_type);