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loop.c (emit_iv_add_mult): Scan the entire insn list generated for the sequence, recording base values.

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        * loop.c (emit_iv_add_mult): Scan the entire insn list generated
        for the sequence, recording base values.

From-SVN: r21208
This commit is contained in:
Richard Henderson 1998-07-15 18:22:41 -06:00 • committed by Jeff Law
parent a2d926467c
commit 00116a7b6d
1 changed files with 17 additions and 1 deletions
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18
gcc/loop.c
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@ -6005,7 +6005,23 @@ emit_iv_add_mult (b, m, a, reg, insert_before)
emit_insn_before (seq, insert_before);
record_base_value (REGNO (reg), b, 0);
/* It is entirely possible that the expansion created lots of new
registers. Iterate over the sequence we just created and
record them all. */
if (GET_CODE (seq) == SEQUENCE)
{
int i;
for (i = 0; i < XVECLEN (seq, 0); ++i)
{
rtx set = single_set (XVECEXP (seq, 0, i));
if (set && GET_CODE (SET_DEST (set)) == REG)
record_base_value (REGNO (SET_DEST (set)), SET_SRC (set), 0);
}
}
else if (GET_CODE (seq) == SET
&& GET_CODE (SET_DEST (seq)) == REG)
record_base_value (REGNO (SET_DEST (seq)), SET_SRC (seq), 0);
}
/* Test whether A * B can be computed without