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flow.c (merge_blocks_nomove): Be more careful about locating the beginning of block A.

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* flow.c (merge_blocks_nomove): Be more careful about
        locating the beginning of block A.

From-SVN: r35623
This commit is contained in:
Richard Henderson 2000-08-11 00:39:55 -07:00 committed by Richard Henderson
parent f94d0f60d3
commit 8416f80a8a
2 changed files with 6 additions and 3 deletions
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gcc/ChangeLog
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@ -1,5 +1,8 @@
2000-08-11 Richard Henderson <rth@cygnus.com>
* flow.c (merge_blocks_nomove): Be more careful about
locating the beginning of block A.
* combine.c (simplify_shift_const): Obey SHIFT_COUNT_TRUNCATED.
Thu Aug 10 22:47:09 2000 Ovidiu Predescu <ovidiu@cup.hp.com>

6
gcc/flow.c
View File

@ -2211,9 +2211,9 @@ merge_blocks_nomove (a, b)
{
rtx prev;
prev = prev_nonnote_insn (a_end);
if (!prev)
prev = a->head;
for (prev = PREV_INSN (a_end); ; prev = PREV_INSN (prev))
if (GET_CODE (prev) != NOTE || prev == a->head)
break;
del_first = a_end;