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re PR middle-end/60908 (compiler bug related to trans-mem.c)

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PR middle-end/60908

  * trans-mem.c (tm_region_init): Mark entry block as visited.
testsuite/
  * gcc.dg/tm/pr60908.c: New test.

From-SVN: r232839
This commit is contained in:
Richard Henderson 2016-01-26 09:29:02 -08:00 committed by Richard Henderson
parent dcbc087996
commit ffc445f486
4 changed files with 28 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-01-26 Richard Henderson <rth@redhat.com>
PR middle-end/60908
* trans-mem.c (tm_region_init): Mark entry block as visited.
2016-01-26 David Malcolm <dmalcolm@redhat.com>
PR other/69006

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2016-01-26 Richard Henderson <rth@redhat.com>
* gcc.dg/tm/pr60908.c: New test.
2016-01-26 David Malcolm <dmalcolm@redhat.com>
PR other/69006

15
gcc/testsuite/gcc.dg/tm/pr60908.c Normal file
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@ -0,0 +1,15 @@
/* { dg-do compile } */
/* { dg-options "-fgnu-tm" } */
int t, v;
int
foo (void)
{
while (1)
{
__transaction_atomic { v++; }
if (t)
return 0;
}
}

7
gcc/trans-mem.c
View File

@ -2039,16 +2039,17 @@ tm_region_init (struct tm_region *region)
struct tm_region *old_region;
auto_vec<tm_region *> bb_regions;
all_tm_regions = region;
bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
/* We could store this information in bb->aux, but we may get called
through get_all_tm_blocks() from another pass that may be already
using bb->aux. */
bb_regions.safe_grow_cleared (last_basic_block_for_fn (cfun));
all_tm_regions = region;
bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
queue.safe_push (bb);
bitmap_set_bit (visited_blocks, bb->index);
bb_regions[bb->index] = region;
do
{
bb = queue.pop ();