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(combinable_i3pat): Bring back to sync with can_combine_p.

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From-SVN: r13274
This commit is contained in:
Richard Kenner 1996-12-10 20:20:59 -05:00
parent 0d9b0e515b
commit 6d101824da
1 changed files with 6 additions and 2 deletions
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8
gcc/combine.c
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@ -1143,13 +1143,17 @@ combinable_i3pat (i3, loc, i2dest, i1dest, i1_not_in_src, pi3dest_killed)
|| (i1dest && reg_overlap_mentioned_p (i1dest, inner_dest))))
/* This is the same test done in can_combine_p except that we
allow a hard register with SMALL_REGISTER_CLASSES if SRC is a
CALL operation. */
CALL operation.
Moreover, we can't test all_adjacent; we don't have to, since
this instruction will stay in place, thus we are not considering
to increase the lifetime of INNER_DEST. */
|| (GET_CODE (inner_dest) == REG
&& REGNO (inner_dest) < FIRST_PSEUDO_REGISTER
&& (! HARD_REGNO_MODE_OK (REGNO (inner_dest),
GET_MODE (inner_dest))
#ifdef SMALL_REGISTER_CLASSES
|| (GET_CODE (src) != CALL && ! REG_USERVAR_P (inner_dest))
|| (GET_CODE (src) != CALL && ! REG_USERVAR_P (inner_dest)
&& FUNCTION_VALUE_REGNO_P (REGNO (inner_dest)))
#endif
))
|| (i1_not_in_src && reg_overlap_mentioned_p (i1dest, src)))