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| author | Jakub Jelinek <jakub@redhat.com> | 2017-10-11 22:50:46 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-10-11 22:50:46 +0200 |
| commit | 69c328ec60f2ff1858387eaf195119f6976fe99c (patch) | |
| tree | 83a058ec2ea22625b18cb35de96bfaa8f7eb5835 /gcc | |
| parent | 1d5b9dd5c6490cbca0437e1d919ae8d45c3d6297 (diff) | |
| download | gcc-69c328ec60f2ff1858387eaf195119f6976fe99c.zip gcc-69c328ec60f2ff1858387eaf195119f6976fe99c.tar.gz gcc-69c328ec60f2ff1858387eaf195119f6976fe99c.tar.bz2 | |
re PR tree-optimization/78558 (Incorrect loop optimization leads to crash)
PR tree-optimization/78558
* gcc.dg/vect/pr78558.c: New test.
From-SVN: r253661
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr78558.c | 44 |
2 files changed, 47 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f136473..2135f48 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2017-10-11 Jakub Jelinek <jakub@redhat.com> + PR tree-optimization/78558 + * gcc.dg/vect/pr78558.c: New test. + PR c++/82414 * g++.dg/lto/pr82414_0.C: New test. diff --git a/gcc/testsuite/gcc.dg/vect/pr78558.c b/gcc/testsuite/gcc.dg/vect/pr78558.c new file mode 100644 index 0000000..2606d4e --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr78558.c @@ -0,0 +1,44 @@ +/* PR tree-optimization/78558 */ + +#include "tree-vect.h" + +struct S +{ + char p[48]; + unsigned long long q, r, s; +} s[50]; + +struct D +{ + unsigned long long q, r; +} d[50]; + +void +foo (void) +{ + unsigned long i; + for (i = 0; i < 50; ++i) + { + d[i].q = s[i].q; + d[i].r = s[i].r; + } +} + +int +main () +{ + check_vect (); + unsigned long i; + for (i = 0; i < 50; ++i) + { + s[i].q = i; + s[i].r = 50 * i; + } + asm volatile ("" : : "g" (s), "g" (d) : "memory"); + foo (); + asm volatile ("" : : "g" (s), "g" (d) : "memory"); + for (i = 0; i < 50; ++i) + if (d[i].q != i || d[i].r != 50 * i) + abort (); + return 0; +} |