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flow.c (find_basic_blocks_1): Keep the cfg accurate when removing an unconditional jump around deleted blocks.

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        * flow.c (find_basic_blocks_1): Keep the cfg accurate when removing
        an unconditional jump around deleted blocks.

From-SVN: r18468
This commit is contained in:
Jeff Law 1998-03-10 18:35:44 -07:00
parent 832544bd03
commit df0c5d2fd3
1 changed files with 8 additions and 0 deletions
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8
gcc/flow.c
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@ -811,6 +811,14 @@ find_basic_blocks_1 (f, nonlocal_label_list, live_reachable_p)
&& INSN_UID (label) != 0
&& BLOCK_NUM (label) == j)
{
int k;
/* The deleted blocks still show up in the cfg,
so we must set basic_block_drops_in for blocks
I to J inclusive to keep the cfg accurate. */
for (k = i; k <= j; k++)
basic_block_drops_in[k] = 1;
PUT_CODE (insn, NOTE);
NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
NOTE_SOURCE_FILE (insn) = 0;