1.1 --- a/src/share/vm/c1/c1_LinearScan.cpp Tue Oct 04 14:30:04 2011 -0700
1.2 +++ b/src/share/vm/c1/c1_LinearScan.cpp Fri Oct 07 13:28:44 2011 +0200
1.3 @@ -2619,6 +2619,24 @@
1.4
1.5 Location::Type loc_type = float_saved_as_double ? Location::float_in_dbl : Location::normal;
1.6 VMReg rname = frame_map()->fpu_regname(opr->fpu_regnr());
1.7 +#ifndef __SOFTFP__
1.8 +#ifndef VM_LITTLE_ENDIAN
1.9 + if (! float_saved_as_double) {
1.10 + // On big endian system, we may have an issue if float registers use only
1.11 + // the low half of the (same) double registers.
1.12 + // Both the float and the double could have the same regnr but would correspond
1.13 + // to two different addresses once saved.
1.14 +
1.15 + // get next safely (no assertion checks)
1.16 + VMReg next = VMRegImpl::as_VMReg(1+rname->value());
1.17 + if (next->is_reg() &&
1.18 + (next->as_FloatRegister() == rname->as_FloatRegister())) {
1.19 + // the back-end does use the same numbering for the double and the float
1.20 + rname = next; // VMReg for the low bits, e.g. the real VMReg for the float
1.21 + }
1.22 + }
1.23 +#endif
1.24 +#endif
1.25 LocationValue* sv = new LocationValue(Location::new_reg_loc(loc_type, rname));
1.26
1.27 scope_values->append(sv);
