* tree-data-refs.c (split_constant_offset): Expose.

        * tree-data-refs.h (split_constant_offset): Add declaration.

        * tree-vectorizer.h (dr_alignment_support): Renamed
        dr_unaligned_software_pipeline to dr_explicit_realign_optimized.
        Added a new value dr_explicit_realign.
        (_stmt_vec_info): Added new fields: dr_base_address, dr_init,
        dr_offset, dr_step, and dr_aligned_to, along with new access
        functions for these fields: STMT_VINFO_DR_BASE_ADDRESS,
        STMT_VINFO_DR_INIT, STMT_VINFO_DR_OFFSET, STMT_VINFO_DR_STEP, and
        STMT_VINFO_DR_ALIGNED_TO.

        * tree-vectorizer.c (vect_supportable_dr_alignment): Add
        documentation.
        In case of outer-loop vectorization with non-fixed misalignment - use
        the dr_explicit_realign scheme instead of the optimized realignment
        scheme.
        (new_stmt_vec_info): Initialize new fields.

        * tree-vect-analyze.c (vect_compute_data_ref_alignment): Handle the
        'nested_in_vect_loop' case. Change verbosity level.
        (vect_analyze_data_ref_access): Handle the 'nested_in_vect_loop' case.
        Don't fail on zero step in the outer-loop for loads.
        (vect_analyze_data_refs): Call split_constant_offset to calculate base,
        offset and init relative to the outer-loop.

        * tree-vect-transform.c (vect_create_data_ref_ptr): Replace the unused
        BSI function argument with a new function argument - at_loop.
        Simplify the condition that determines STEP. Takes additional argument
        INV_P. Support outer-loop vectorization (handle the nested_in_vect_loop
        case), including zero step in the outer-loop. Call
        vect_create_addr_base_for_vector_ref with additional argument.
        (vect_create_addr_base_for_vector_ref): Takes additional argument LOOP.
        Updated function documentation. Handle the 'nested_in_vect_loop' case.
        Fixed and simplified calculation of step.
        (vectorizable_store): Call vect_create_data_ref_ptr with loop instead
        of bsi, and with additional argument. Call bump_vector_ptr with
        additional argument. Fix typos. Handle the 'nested_in_vect_loop' case.
        (vect_setup_realignment): Takes additional arguments INIT_ADDR and
        DR_ALIGNMENT_SUPPORT. Returns another value AT_LOOP. Handle the case
        when the realignment setup needs to take place inside the loop.  Support
        the dr_explicit_realign scheme. Allow generating the optimized
        realignment scheme for outer-loop vectorization. Added documentation.
        (vectorizable_load): Support the dr_explicit_realign scheme. Handle the
        'nested_in_vect_loop' case, including loads that are invariant in the
        outer-loop and the realignment schemes. Handle the case when the
        realignment setup needs to take place inside the loop. Call
        vect_setup_realignment with additional arguments.  Call
        vect_create_data_ref_ptr with additional argument and with loop instead
        of bsi. Fix 80-column overflow. Fix typos. Rename PHI_STMT to PHI.
        (vect_gen_niters_for_prolog_loop): Call
        vect_create_addr_base_for_vector_ref with additional arguments.
        (vect_create_cond_for_align_checks): Likewise.
        (bump_vector_ptr): Updated to support the new dr_explicit_realign
        scheme: takes additional argument bump; argument ptr_incr is now
        optional; updated documentation.
        (vect_init_vector): Takes additional argument (bsi). Use it, if
        available, to insert the vector initialization.
        (get_initial_def_for_induction): Pass additional argument in call to
        vect_init_vector.
        (vect_get_vec_def_for_operand): Likewise.
        (vect_setup_realignment): Likewise.
        (vectorizable_load): Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@127624 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/vect-outer-4a.c b/gcc/testsuite/gcc.dg/vect/vect-outer-4a.c
new file mode 100644
index 00000000000..8fd1a03db14
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-outer-4a.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+
+#define N 40
+#define M 128
+signed short in[N+M];
+signed short coeff[M];
+signed short out[N];
+
+/* Outer-loop vectorization.
+   Currently not vectorized because of multiple-data-types in the inner-loop.  */
+
+void
+foo (){
+  int i,j;
+  int diff;
+
+  for (i = 0; i < N; i++) {
+    diff = 0;
+    for (j = 0; j < M; j+=8) {
+      diff += in[j+i]*coeff[j]; 
+    }
+    out[i]=diff;
+  }
+}
+
+/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail *-*-* } } } */
+/* FORNOW. not vectorized until we support 0-stride acceses like coeff[j]. should be:
+   { scan-tree-dump-not "multiple types in nested loop." "vect" { xfail *-*-* } } } */
+
+/* { dg-final { scan-tree-dump-times "zero step in outer loop." 1  "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */