diff options
Diffstat (limited to 'gcc/df.h')
| -rw-r--r-- | gcc/df.h | 18 |
1 files changed, 3 insertions, 15 deletions
@@ -1,6 +1,7 @@ /* Form lists of pseudo register references for autoinc optimization for GNU compiler. This is part of flow optimization. - Copyright (C) 1999, 2000, 2001, 2003, 2004 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005 + Free Software Foundation, Inc. Contributed by Michael P. Hayes (m.hayes@elec.canterbury.ac.nz) This file is part of GCC. @@ -57,23 +58,10 @@ enum df_ref_flags independent. */ DF_REF_READ_WRITE = 1, - /* This flag is set on register references inside a subreg on - machines which have CANNOT_CHANGE_MODE_CLASS. - Note, that this flag can also be set on df_refs representing - the REG itself (i.e., one might not see the subreg anymore). - Also note, that this flag is set also for hardreg refs, i.e., - you must check yourself if it's a pseudo. */ - DF_REF_MODE_CHANGE = 2, - /* This flag is set, if we stripped the subreg from the reference. In this case we must make conservative guesses, at what the outer mode was. */ - DF_REF_STRIPPED = 4, - - /* This flag is set during register allocation if it's okay for - the reference's INSN to have one of its operands replaced with a - memory reference. */ - DF_REF_MEM_OK = 8 + DF_REF_STRIPPED = 2 }; |