diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr71872.c | 15 | ||||
| -rw-r--r-- | gcc/tree-data-ref.c | 3 |
4 files changed, 28 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e62f2d8..8da2378 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-07-14 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/71872 + * tree-data-ref.c (get_references_in_stmt): Ignore references + with is_gimple_constant get_base_address. + 2016-07-14 Thomas Preud'homme <thomas.preudhomme@arm.com> * config/arm/arm.h (TARGET_HAVE_LDACQ): Enable for ARMv8-M Mainline. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9570582..6b0c7b8 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-07-14 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/71872 + * gcc.c-torture/compile/pr71872.c: New test. + 2016-07-14 Thomas Preud'homme <thomas.preudhomme@arm.com> * gcc.target/arm/atomic-comp-swap-release-acquire.c: Rename into ... diff --git a/gcc/testsuite/gcc.c-torture/compile/pr71872.c b/gcc/testsuite/gcc.c-torture/compile/pr71872.c new file mode 100644 index 0000000..6db80db --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr71872.c @@ -0,0 +1,15 @@ +/* PR tree-optimization/71872 */ + +struct __attribute__((may_alias)) S { int a; }; + +void +foo (int *x, struct S *y) +{ + int i; + for (i = 0; i < 16; i++) + { + int a = 0; + if (*x) + *(struct S *) y = *(struct S *) &a; + } +} diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index 337d278..081ee60 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -3868,7 +3868,8 @@ get_references_in_stmt (gimple *stmt, vec<data_ref_loc, va_heap> *references) if (DECL_P (op1) || (REFERENCE_CLASS_P (op1) && (base = get_base_address (op1)) - && TREE_CODE (base) != SSA_NAME)) + && TREE_CODE (base) != SSA_NAME + && !is_gimple_min_invariant (base))) { ref.ref = op1; ref.is_read = true; |