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| author | Richard Biener <rguenther@suse.de> | 2015-12-17 12:34:27 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2015-12-17 12:34:27 +0000 |
| commit | 8ee38286c3f26eeacf79090d5a75643a2a1c0697 (patch) | |
| tree | 491852cb5e643b01414fc5a7b4ad464524b141eb | |
| parent | a30c5ca4c15956697b2c78460be0a34811a2106e (diff) | |
| download | gcc-8ee38286c3f26eeacf79090d5a75643a2a1c0697.zip gcc-8ee38286c3f26eeacf79090d5a75643a2a1c0697.tar.gz gcc-8ee38286c3f26eeacf79090d5a75643a2a1c0697.tar.bz2 | |
re PR tree-optimization/68951 (ICE in vect_update_misalignment_for_peel)
2015-12-17 Richard Biener <rguenther@suse.de>
PR tree-optimization/68951
* tree-vect-data-refs.c (vect_peeling_hash_get_lowest_cost):
Ignore strided non-group accesses.
* gcc.dg/torture/pr68951.c: New testcase.
From-SVN: r231754
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr68951.c | 12 | ||||
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 6 |
4 files changed, 29 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 375ab75..46cf0b0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-12-17 Richard Biener <rguenther@suse.de> + + PR tree-optimization/68951 + * tree-vect-data-refs.c (vect_peeling_hash_get_lowest_cost): + Ignore strided non-group accesses. + 2015-12-17 Andrew Burgess <andrew.burgess@embecosm.com> * config/arc/arc.c (arc_loop_hazard): Don't convert the jump label diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 674c868..fafa8cc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-12-17 Richard Biener <rguenther@suse.de> + + PR tree-optimization/68951 + * gcc.dg/torture/pr68951.c: New testcase. + 2015-12-17 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> PR target/67973 diff --git a/gcc/testsuite/gcc.dg/torture/pr68951.c b/gcc/testsuite/gcc.dg/torture/pr68951.c new file mode 100644 index 0000000..95c3c32 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr68951.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-w" } */ + +static int g_534[1][1]; +int fn1() +{ + int i; + for (i = 0; i < 4; i++) + g_534[i + 2][i] ^= 3; + for (;;) + ; +} diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 4c566c8..b039ff2 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -1215,6 +1215,12 @@ vect_peeling_hash_get_lowest_cost (_vect_peel_info **slot, && GROUP_FIRST_ELEMENT (stmt_info) != stmt) continue; + /* Strided accesses perform only component accesses, alignment is + irrelevant for them. */ + if (STMT_VINFO_STRIDED_P (stmt_info) + && !STMT_VINFO_GROUPED_ACCESS (stmt_info)) + continue; + save_misalignment = DR_MISALIGNMENT (dr); vect_update_misalignment_for_peel (dr, elem->dr, elem->npeel); vect_get_data_access_cost (dr, &inside_cost, &outside_cost, |