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(jump_optimize): When looking for an `if' statement that takes two insns to compute a result using a temporary...

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(jump_optimize): When looking for an `if' statement that takes two
insns to compute a result using a temporary, allow the temporary to be
a SUBREG.

From-SVN: r7355
This commit is contained in:
Richard Kenner 1994-05-26 18:58:47 -04:00
parent 35bb77fd39
commit c03c471173
1 changed files with 5 additions and 1 deletions
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6
gcc/jump.c
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@ -946,7 +946,11 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan)
&& simplejump_p (temp2)
&& JUMP_LABEL (temp2) == JUMP_LABEL (insn)))
&& (temp1 = single_set (temp)) != 0
&& (temp5 = SET_DEST (temp1), GET_CODE (temp5) == REG)
&& (temp5 = SET_DEST (temp1),
(GET_CODE (temp5) == REG
|| (GET_CODE (temp5) == SUBREG
&& (temp5 = SUBREG_REG (temp5),
GET_CODE (temp5) == REG))))
&& REGNO (temp5) >= FIRST_PSEUDO_REGISTER
&& regno_first_uid[REGNO (temp5)] == INSN_UID (temp)
&& regno_last_uid[REGNO (temp5)] == INSN_UID (temp3)