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| author | Richard Biener <rguenther@suse.de> | 2013-05-15 08:12:49 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-05-15 08:12:49 +0000 |
| commit | fdf6a7b900f9cd6fb9ec4f5bb0fc554140d61cea (patch) | |
| tree | 34c885e5d44d7838ecd0ee28e773f980b624cfef /gcc | |
| parent | 2d6e460353fd7ad3160faaa96a0174042c6c28f1 (diff) | |
| download | gcc-fdf6a7b900f9cd6fb9ec4f5bb0fc554140d61cea.zip gcc-fdf6a7b900f9cd6fb9ec4f5bb0fc554140d61cea.tar.gz gcc-fdf6a7b900f9cd6fb9ec4f5bb0fc554140d61cea.tar.bz2 | |
re PR tree-optimization/57275 (Error in data dependence analysis during gather vectorization)
2013-05-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/57275
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Fix
return value for fail to do runtime alias checks for gather loads.
* gcc.target/i386/pr57275.c: New testcase.
From-SVN: r198918
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr57275.c | 39 | ||||
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 4 |
4 files changed, 52 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f3daf5a..aa1f910 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2013-05-15 Richard Biener <rguenther@suse.de> + + PR tree-optimization/57275 + * tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Fix + return value for fail to do runtime alias checks for gather loads. + 2013-05-15 Jan Hubicka <jh@suse.cz> PR lto/57038 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 383dc9d..984ee6d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2013-05-15 Richard Biener <rguenther@suse.de> + + PR tree-optimization/57275 + * gcc.target/i386/pr57275.c: New testcase. + 2013-05-15 Jan Hubicka <jh@suse.cz> * gcc.dg/lto/attr-weakref-1_0.c: New testcase. diff --git a/gcc/testsuite/gcc.target/i386/pr57275.c b/gcc/testsuite/gcc.target/i386/pr57275.c new file mode 100644 index 0000000..01b9bb4 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr57275.c @@ -0,0 +1,39 @@ +/* { dg-do run } */ +/* { dg-options "-O3 -march=native" } */ + +extern void abort (void); + +#define N 1024 + +float a[N], b[N], c[N]; +int k[N]; + +__attribute__((noinline, noclone)) void +f (void) +{ + int i; + for (i = 0; i < N; i++) + { + a[i] = b[k[i]]; + b[i] = c[i]; + } +} + +int main () +{ + int i; + + for (i = 0; i < N; i++) + { + k[i] = i%2; + b[i] = i; + c[i] = 179; + } + + f (); + + if (a[2] != 179 || a[3] != 179) + abort (); + + return 0; +} diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index bf0b510..c26d25d 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -269,7 +269,7 @@ vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr, dump_generic_expr (MSG_MISSED_OPTIMIZATION, TDF_SLIM, DR_REF (drb)); } - return false; + return true; } if (dump_enabled_p ()) @@ -305,7 +305,7 @@ vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr, dump_generic_expr (MSG_MISSED_OPTIMIZATION, TDF_SLIM, DR_REF (drb)); } - return false; + return true; } if (dump_enabled_p ()) |