diff options
| author | carrot <carrot@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-10-28 00:20:13 +0000 |
|---|---|---|
| committer | carrot <carrot@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-10-28 00:20:13 +0000 |
| commit | 1d2b7cdfcb9376a6ee98964b11cf73fe14154e13 (patch) | |
| tree | f6725143fd0e1c8cc94937d56da0b5242470cb47 | |
| parent | aeb91d7344d645d30e3827fcf4e7a36e6deced28 (diff) | |
| download | ppe42-gcc-1d2b7cdfcb9376a6ee98964b11cf73fe14154e13.tar.gz ppe42-gcc-1d2b7cdfcb9376a6ee98964b11cf73fe14154e13.zip | |
PR tree-optimization/63530
tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Set
pointer alignment according to DR_MISALIGNMENT.
gcc.dg/vect/pr63530.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@216770 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr63530.c | 30 | ||||
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 6 |
4 files changed, 46 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 86e2095cadc..a1c65cb4b20 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-10-27 Guozhi Wei <carrot@google.com> + + PR tree-optimization/63530 + tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Set + pointer alignment according to DR_MISALIGNMENT. + 2014-10-25 Yury Gribov <y.gribov@samsung.com> PR sanitizer/63638 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 175a1cf91e6..9b716323430 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2014-10-27 Guozhi Wei <carrot@google.com> + + PR tree-optimization/63530 + gcc.dg/vect/pr63530.c: New test. + 2014-10-27 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/entry_queues2.adb: New test. diff --git a/gcc/testsuite/gcc.dg/vect/pr63530.c b/gcc/testsuite/gcc.dg/vect/pr63530.c new file mode 100644 index 00000000000..b583b9b3550 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr63530.c @@ -0,0 +1,30 @@ +/* { dg-options "-O2 -ftree-vectorize -funroll-loops --param \"max-completely-peeled-insns=400\"" } */ + +/* PR tree-optimization/63530 */ +/* On armv7 hardware, following options cause run time failure */ +/* -march=armv7-a -mfloat-abi=hard -mfpu=neon -marm -O2 -ftree-vectorize */ +/* -funroll-loops --param "max-completely-peeled-insns=400" */ + +#include <stdlib.h> + +typedef struct { + unsigned char map[256]; + int i; +} A, *AP; + +AP __attribute__ ((noinline)) +foo (int n) +{ + AP b = (AP)calloc (1, sizeof (A)); + int i; + for (i = n; i < 256; i++) + b->map[i] = i; + return b; +} + +int +main() +{ + AP p = foo(3); + return p->map[30] - p->map[20] - p->map[10]; +} diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 7a222bd209e..49303b1b58a 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -3941,8 +3941,12 @@ vect_create_addr_base_for_vector_ref (gimple stmt, && TREE_CODE (addr_base) == SSA_NAME) { duplicate_ssa_name_ptr_info (addr_base, DR_PTR_INFO (dr)); - if (offset) + unsigned int align = TYPE_ALIGN_UNIT (STMT_VINFO_VECTYPE (stmt_info)); + int misalign = DR_MISALIGNMENT (dr); + if (offset || byte_offset || (misalign == -1)) mark_ptr_info_alignment_unknown (SSA_NAME_PTR_INFO (addr_base)); + else + set_ptr_info_alignment (SSA_NAME_PTR_INFO (addr_base), align, misalign); } if (dump_enabled_p ()) |
