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| author | Richard Sandiford <richard.sandiford@arm.com> | 2015-05-11 09:35:53 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2015-05-11 09:35:53 +0000 |
| commit | cb6f459119104ddbba18330d329ada209f9bdc25 (patch) | |
| tree | 6d3db918d04de28fb93c948686fd0bd5c282dd5e /gcc/rtlanal.c | |
| parent | 258619bb2d420f54a510569cee8e642835f86023 (diff) | |
| download | gcc-cb6f459119104ddbba18330d329ada209f9bdc25.zip gcc-cb6f459119104ddbba18330d329ada209f9bdc25.tar.gz gcc-cb6f459119104ddbba18330d329ada209f9bdc25.tar.bz2 | |
re PR rtl-optimization/66076 (ICE: in vec_safe_grow, at vec.h:618 with -funroll-loops -mno-prefer-avx128 -march=bdver4)
gcc/
PR rtl-optimization/66076
* rtlanal.c (generic_subrtx_iterator <T>::add_single_to_queue):
Don't grow the heap array if it is already big enough from a
previous iteration.
gcc/testsuite/
PR rtl-optimization/66076
* gcc.dg/torture/pr66076.c: New test.
From-SVN: r222999
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 00d9080..68d9931 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -104,7 +104,10 @@ generic_subrtx_iterator <T>::add_single_to_queue (array_type &array, return base; } gcc_checking_assert (i == LOCAL_ELEMS); - vec_safe_grow (array.heap, i + 1); + /* A previous iteration might also have moved from the stack to the + heap, in which case the heap array will already be big enough. */ + if (vec_safe_length (array.heap) <= i) + vec_safe_grow (array.heap, i + 1); base = array.heap->address (); memcpy (base, array.stack, sizeof (array.stack)); base[LOCAL_ELEMS] = x; |