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(try_combine): When splitting an insn, check for the new I2 setting a

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SUBREG.

From-SVN: r13286
This commit is contained in:
Richard Kenner 1996-12-11 17:46:34 -05:00
parent 0bc8ae6e51
commit d409668956
1 changed files with 6 additions and 1 deletions
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7
gcc/combine.c
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@ -1845,10 +1845,15 @@ try_combine (i3, i2, i1)
|| GET_CODE (new_i3_dest) == SUBREG) || GET_CODE (new_i3_dest) == SUBREG)
new_i3_dest = XEXP (new_i3_dest, 0); new_i3_dest = XEXP (new_i3_dest, 0);
while (GET_CODE (new_i2_dest) == ZERO_EXTRACT
|| GET_CODE (new_i2_dest) == STRICT_LOW_PART
|| GET_CODE (new_i2_dest) == SUBREG)
new_i2_dest = XEXP (new_i2_dest, 0);
if (GET_CODE (new_i3_dest) == REG if (GET_CODE (new_i3_dest) == REG
&& GET_CODE (new_i2_dest) == REG && GET_CODE (new_i2_dest) == REG
&& REGNO (new_i3_dest) == REGNO (new_i2_dest)) && REGNO (new_i3_dest) == REGNO (new_i2_dest))
reg_n_sets[REGNO (SET_DEST (i2set))]++; reg_n_sets[REGNO (new_i2_dest)]++;
} }
} }