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lvzhengyang
riscv-gcc-1
Commits
cc291433
Commit
cc291433
authored
Mar 25, 1999
by
Finn Hakansson
Committed by
Jeff Law
Mar 25, 1999
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* loop.c (strength_reduce): Correct a comment.
From-SVN: r25983
parent
cf38f48a
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gcc/ChangeLog
View file @
cc291433
...
...
@@ -40,6 +40,8 @@ Thu Mar 25 10:05:56 1999 Richard Henderson <rth@cygnus.com>
Thu
Mar
25
02
:
12
:
42
1999
Finn
Hakansson
<
finn
@axis
.
com
>
*
loop
.
c
(
strength_reduce
)
:
Correct
a
comment
.
*
rtl
.
h
(
MEM_COPY_ATTRIBUTES
)
:
Remove
unnecessary
ending
backslash
.
Thu
Mar
25
02
:
02
:
13
1999
Axel
Thimm
<
Axel
.
Thimm
@physik
.
fu
-
berlin
.
de
>
...
...
gcc/loop.c
View file @
cc291433
...
...
@@ -4149,10 +4149,10 @@ strength_reduce (scan_start, end, loop_top, insn_count,
this can't succeed if we already know that there is a jump
between v->insn and next->insn, yet next->always_executed is
set and next->maybe_multiple is cleared. Such a combination
implies that the jump destination is outs
e
ide the loop.
implies that the jump destination is outside the loop.
If we want to make this check more sophisticated, we should
check each branch between v->insn and next->insn individually
to see if
it
the biv is dead at its destination. */
to see if the biv is dead at its destination. */
if
(
uid_luid
[
REGNO_LAST_UID
(
bl
->
regno
)]
<
INSN_LUID
(
loop_end
)
&&
bl
->
init_insn
...
...
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