diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr84357.c | 31 | ||||
| -rw-r--r-- | gcc/tree-data-ref.c | 11 |
4 files changed, 46 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 22589ba..cc29440 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-02-14 Richard Sandiford <richard.sandiford@linaro.org> + + PR tree-optimization/84357 + * tree-data-ref.c (object_address_invariant_in_loop_p): Check + operand 1 of an ARRAY_REF too. + 2018-02-14 Oleg Endo <olegendo@gcc.gnu.org> PR target/83831 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 776542a..473a272 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-02-14 Richard Sandiford <richard.sandiford@linaro.org> + + PR tree-optimization/84357 + * gcc.dg/vect/pr84357.c: New test. + 2018-02-14 Oleg Endo <olegendo@gcc.gnu.org> PR target/83831 diff --git a/gcc/testsuite/gcc.dg/vect/pr84357.c b/gcc/testsuite/gcc.dg/vect/pr84357.c new file mode 100644 index 0000000..cd3cc4a --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr84357.c @@ -0,0 +1,31 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-Wall" } */ + +#define COUNT 32 + +typedef struct s1 { + unsigned char c; +} s1; + +typedef struct s2 +{ + char pad; + s1 arr[COUNT]; +} s2; + +typedef struct s3 { + s1 arr[COUNT]; +} s3; + +s2 * get_s2(); +s3 * gActiveS3; +void foo() +{ + s3 * three = gActiveS3; + s2 * two = get_s2(); + + for (int i = 0; i < COUNT; i++) + { + two->arr[i].c = three->arr[i].c; + } +} diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index fdb2ac1..a886329 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -2200,13 +2200,10 @@ object_address_invariant_in_loop_p (const struct loop *loop, const_tree obj) { if (TREE_CODE (obj) == ARRAY_REF) { - /* Index of the ARRAY_REF was zeroed in analyze_indices, thus we only - need to check the stride and the lower bound of the reference. */ - if (chrec_contains_symbols_defined_in_loop (TREE_OPERAND (obj, 2), - loop->num) - || chrec_contains_symbols_defined_in_loop (TREE_OPERAND (obj, 3), - loop->num)) - return false; + for (int i = 1; i < 4; ++i) + if (chrec_contains_symbols_defined_in_loop (TREE_OPERAND (obj, i), + loop->num)) + return false; } else if (TREE_CODE (obj) == COMPONENT_REF) { |