On Mon, Nov 11, 2019 at 7:50 PM Richard Sandiford
<richard.sandif...@arm.com> wrote:
>
> This patch prints a message to say how an alias check is being
> implemented.
OK.
>
> 2019-11-11 Richard Sandiford <richard.sandif...@arm.com>
>
> gcc/
> * tree-data-ref.c (create_intersect_range_checks_index)
> (create_intersect_range_checks): Print dump messages.
>
> gcc/testsuite/
> * gcc.dg/vect/vect-alias-check-1.c: Test for the type of alias check.
> * gcc.dg/vect/vect-alias-check-8.c: Likewise.
> * gcc.dg/vect/vect-alias-check-9.c: Likewise.
> * gcc.dg/vect/vect-alias-check-10.c: Likewise.
> * gcc.dg/vect/vect-alias-check-11.c: Likewise.
> * gcc.dg/vect/vect-alias-check-12.c: Likewise.
> * gcc.dg/vect/vect-alias-check-13.c: Likewise.
> * gcc.dg/vect/vect-alias-check-14.c: Likewise.
> * gcc.dg/vect/vect-alias-check-15.c: Likewise.
> * gcc.dg/vect/vect-alias-check-16.c: Likewise.
> * gcc.dg/vect/vect-alias-check-17.c: Likewise.
>
> Index: gcc/tree-data-ref.c
> ===================================================================
> --- gcc/tree-data-ref.c 2019-11-11 18:30:57.167147102 +0000
> +++ gcc/tree-data-ref.c 2019-11-11 18:31:01.263118514 +0000
> @@ -1890,6 +1890,8 @@ create_intersect_range_checks_index (cla
> else
> *cond_expr = part_cond_expr;
> }
> + if (dump_enabled_p ())
> + dump_printf (MSG_NOTE, "using an index-based overlap test\n");
> return true;
> }
>
> @@ -2037,6 +2039,8 @@ create_intersect_range_checks (class loo
> = fold_build2 (TRUTH_OR_EXPR, boolean_type_node,
> fold_build2 (cmp_code, boolean_type_node, seg_a_max, seg_b_min),
> fold_build2 (cmp_code, boolean_type_node, seg_b_max, seg_a_min));
> + if (dump_enabled_p ())
> + dump_printf (MSG_NOTE, "using an address-based overlap test\n");
> }
>
> /* Create a conditional expression that represents the run-time checks for
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-1.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-1.c 2019-03-08
> 18:15:02.304871094 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-1.c 2019-11-11
> 18:31:01.247118627 +0000
> @@ -15,3 +15,5 @@ fn1 ()
> }
>
> /* { dg-final { scan-tree-dump "improved number of alias checks from
> \[0-9\]* to 1" "vect" } } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-8.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-8.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-8.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -60,3 +60,5 @@ main (void)
> }
>
> /* { dg-final { scan-tree-dump {flags: *WAR\n} "vect" { target vect_int } }
> } */
> +/* { dg-final { scan-tree-dump "using an index-based overlap test" "vect" }
> } */
> +/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-9.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-9.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-9.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -53,3 +53,5 @@ main (void)
> }
>
> /* { dg-final { scan-tree-dump {flags: [^\n]*ARBITRARY\n} "vect" { target
> vect_int } } } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-10.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-10.c 2019-03-08
> 18:15:02.248871307 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-10.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -65,3 +65,6 @@ main (void)
> FOR_EACH_TYPE (DO_TEST)
> return 0;
> }
> +
> +/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-11.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-11.c 2019-03-08
> 18:15:02.292871138 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-11.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -95,3 +95,6 @@ main (void)
> /* { dg-final { scan-tree-dump {no alias between [^\n]* when [^\n]* step[^
> ]* \* 8[)]* is outside \(-24, 24\)} "vect" { target vect_double } } } */
> /* { dg-final { scan-tree-dump {no alias between [^\n]* when [^\n]* step[^
> ]* \* 8[)]* is outside \(-32, 32\)} "vect" { target vect_double } } } */
> /* { dg-final { scan-tree-dump {run-time check [^\n]* abs \([^*]* \* 8[)]*
> >= 32} "vect" { target vect_double } } } */
> +
> +/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-12.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-12.c 2019-03-08
> 18:15:02.252871290 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-12.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -95,3 +95,6 @@ main (void)
> /* { dg-final { scan-tree-dump {no alias between [^\n]* when [^\n]* [_a-z][^
> ]* \* 8[)]* is outside \[0, 24\)} "vect" { target vect_double } } } */
> /* { dg-final { scan-tree-dump {no alias between [^\n]* when [^\n]* [_a-z][^
> ]* \* 8[)]* is outside \[0, 32\)} "vect" { target vect_double } } } */
> /* { dg-final { scan-tree-dump {run-time check [^\n]* unsigned \([^*]* \*
> 8[)]* >= 32} "vect" { target vect_double } } } */
> +
> +/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-13.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-13.c 2019-03-08
> 18:15:02.296871124 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-13.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -18,4 +18,6 @@ f2 (int *x, long step2, int n)
>
> /* { dg-final { scan-tree-dump {need run-time check that [^\n]*step1[^\n]*
> is nonzero} "vect" } } */
> /* { dg-final { scan-tree-dump-not {need run-time check that
> [^\n]*step2[^\n]* is nonzero} "vect" } } */
> +/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> /* { dg-final { scan-tree-dump-times {LOOP VECTORIZED} 2 "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-14.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-14.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-14.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -60,3 +60,5 @@ main (void)
>
> /* { dg-final { scan-tree-dump {flags: *WAR\n} "vect" { target vect_int } }
> } */
> /* { dg-final { scan-tree-dump-not {flags: [^\n]*ARBITRARY\n} "vect" } } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-15.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-15.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-15.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -57,3 +57,5 @@ main (void)
> }
>
> /* { dg-final { scan-tree-dump {flags: *WAW\n} "vect" { target vect_int } }
> } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-16.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-16.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-16.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -62,3 +62,5 @@ main (void)
> }
>
> /* { dg-final { scan-tree-dump {flags: *RAW\n} "vect" { target vect_int } }
> } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
> Index: gcc/testsuite/gcc.dg/vect/vect-alias-check-17.c
> ===================================================================
> --- gcc/testsuite/gcc.dg/vect/vect-alias-check-17.c 2019-11-11
> 18:30:57.167147102 +0000
> +++ gcc/testsuite/gcc.dg/vect/vect-alias-check-17.c 2019-11-11
> 18:31:01.251118599 +0000
> @@ -11,3 +11,5 @@ f (struct s *s1, int a, int b)
> }
>
> /* { dg-final { scan-tree-dump {flags: *[^\n]*MIXED_STEPS} "vect" } } */
> +/* { dg-final { scan-tree-dump "using an address-based overlap test" "vect"
> } } */
> +/* { dg-final { scan-tree-dump-not "using an index-based" "vect" } } */
