diff options
Diffstat (limited to 'contrib/gcc/df.h')
| -rw-r--r-- | contrib/gcc/df.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/contrib/gcc/df.h b/contrib/gcc/df.h index 7f4e4be..59f3143 100644 --- a/contrib/gcc/df.h +++ b/contrib/gcc/df.h @@ -50,7 +50,16 @@ struct df_link enum df_ref_flags { - DF_REF_READ_WRITE = 1 + DF_REF_READ_WRITE = 1, + + /* This flag is set on register references itself representing a or + being inside a subreg on machines which have CLASS_CANNOT_CHANGE_MODE + and where the mode change of that subreg expression is invalid for + this class. Note, that this flag can also be set on df_refs + representing the REG itself (i.e. one might not see the subreg + anyore). 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 }; /* Define a register reference structure. */ @@ -61,7 +70,7 @@ struct ref rtx *loc; /* Loc is the location of the reg. */ struct df_link *chain; /* Head of def-use or use-def chain. */ enum df_ref_type type; /* Type of ref. */ - int id; /* Ref index. */ + unsigned int id; /* Ref index. */ enum df_ref_flags flags; /* Various flags. */ }; |
