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loop.c (basic_induction_var): A non-integer variable which is being set by a paradoxical subreg is probably...

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* loop.c (basic_induction_var): A non-integer variable which is
        being set by a paradoxical subreg is probably not a biv.

From-SVN: r30181
This commit is contained in:
Geoff Keating 1999-10-26 05:56:15 +00:00 committed by Jeff Law
parent 7146dfdd90
commit 7f6dae2a45
2 changed files with 7 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
Mon Oct 25 23:54:45 1999 Geoff Keating <geoffk@cygnus.com>
* loop.c (basic_induction_var): A non-integer variable which is
being set by a paradoxical subreg is probably not a biv.
1999-10-25 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
* prefix.c (translate_name) Check for empty prefix string.

2
gcc/loop.c
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@ -6118,6 +6118,8 @@ basic_induction_var (x, mode, dest_reg, p, inc_val, mult_val, location)
|| (GET_CODE (SET_DEST (set)) == SUBREG
&& (GET_MODE_SIZE (GET_MODE (SET_DEST (set)))
<= UNITS_PER_WORD)
&& (GET_MODE_CLASS (GET_MODE (SET_DEST (set)))
== MODE_INT)
&& SUBREG_REG (SET_DEST (set)) == x))
&& basic_induction_var (SET_SRC (set),
(GET_MODE (SET_SRC (set)) == VOIDmode