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reload.c (find_reloads): Always force (subreg (mem)) to be reloaded if WORD_REGISTER_OPERATIONS.

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* reload.c (find_reloads): Always force (subreg (mem)) to be
reloaded if WORD_REGISTER_OPERATIONS.

From-SVN: r18416
This commit is contained in:
Richard Henderson 1998-03-04 18:42:22 -08:00 committed by Richard Henderson
parent ebb7b10b6d
commit 5ec105cd71
2 changed files with 19 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Thu Mar 5 02:41:27 1998 Richard Henderson <rth@cygnus.com>
* reload.c (find_reloads): Always force (subreg (mem)) to be
reloaded if WORD_REGISTER_OPERATIONS.
Thu Mar 5 02:14:44 1998 Richard Henderson <rth@cygnus.com>
* haifa-sched.c (free_list): Rename from free_pnd_lst.

16
gcc/reload.c
View File

@ -2753,10 +2753,20 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p)
register access. If the data is, in fact, in memory we
must always load using the size assumed to be in the
register and let the insn do the different-sized
accesses. */
accesses.
This is doubly true if WORD_REGISTER_OPERATIONS. In
this case eliminate_regs has left non-paradoxical
subregs for push_reloads to see. Make sure it does
by forcing the reload.
??? When is it right at this stage to have a subreg
of a mem that is _not_ to be handled specialy? IMO
those should have been reduced to just a mem. */
|| ((GET_CODE (operand) == MEM
|| (GET_CODE (operand)== REG
&& REGNO (operand) >= FIRST_PSEUDO_REGISTER))
#ifndef WORD_REGISTER_OPERATIONS
&& (((GET_MODE_BITSIZE (GET_MODE (operand))
< BIGGEST_ALIGNMENT)
&& (GET_MODE_SIZE (operand_mode[i])
@ -2771,7 +2781,9 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p)
&& INTEGRAL_MODE_P (GET_MODE (operand))
&& LOAD_EXTEND_OP (GET_MODE (operand)) != NIL)
#endif
))
)
#endif
)
/* Subreg of a hard reg which can't handle the subreg's mode
or which would handle that mode in the wrong number of
registers for subregging to work. */