diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/df.c | 10 |
2 files changed, 10 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 26349e4..1ea9b2c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2003-12-02 Geoffrey Keating <geoffk@geoffk.org> + + * df.c (df_uses_record) <MEM>: The argument of a MEM is read-only, + never read-write. + <REG>: Delete incorrect comment. + <SET>: Remove 'use_flags' variable. + 2003-12-03 David Edelsohn <edelsohn@gnu.org> * function.c (assign_parms): Make sure parm PARALLEL combined @@ -971,7 +971,7 @@ df_uses_record (struct df *df, rtx *loc, enum df_ref_type ref_type, return; case MEM: - df_uses_record (df, &XEXP (x, 0), DF_REF_REG_MEM_LOAD, bb, insn, flags); + df_uses_record (df, &XEXP (x, 0), DF_REF_REG_MEM_LOAD, bb, insn, 0); return; case SUBREG: @@ -987,7 +987,6 @@ df_uses_record (struct df *df, rtx *loc, enum df_ref_type ref_type, /* ... Fall through ... */ case REG: - /* See a REG (or SUBREG) other than being set. */ df_ref_record (df, x, loc, insn, ref_type, flags); return; @@ -999,14 +998,12 @@ df_uses_record (struct df *df, rtx *loc, enum df_ref_type ref_type, switch (GET_CODE (dst)) { - enum df_ref_flags use_flags; case SUBREG: if ((df->flags & DF_FOR_REGALLOC) == 0 && read_modify_subreg_p (dst)) { - use_flags = DF_REF_READ_WRITE; df_uses_record (df, &SUBREG_REG (dst), DF_REF_REG_USE, bb, - insn, use_flags); + insn, DF_REF_READ_WRITE); break; } /* ... FALLTHRU ... */ @@ -1025,9 +1022,8 @@ df_uses_record (struct df *df, rtx *loc, enum df_ref_type ref_type, dst = XEXP (dst, 0); if (GET_CODE (dst) != SUBREG) abort (); - use_flags = DF_REF_READ_WRITE; df_uses_record (df, &SUBREG_REG (dst), DF_REF_REG_USE, bb, - insn, use_flags); + insn, DF_REF_READ_WRITE); break; case ZERO_EXTRACT: case SIGN_EXTRACT: |