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tree-optimization/93964 - adjust ISL code generation for pointer params

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Pointers eventually need intermediate conversions in code generation.
Allowing them is much easier than fending them off since niter
and scev expansion easily drag those in.

2020-02-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/93964
	* graphite-isl-ast-to-gimple.c
	(gcc_expression_from_isl_ast_expr_id): Add intermediate
	conversion for pointer to integer converts.
	* graphite-scop-detection.c (assign_parameter_index_in_region):
	Relax assert.

	* gcc.dg/graphite/pr93964.c: New testcase.
This commit is contained in:
Richard Biener 2020-03-04 10:40:32 +01:00
parent c7ec2f9ff6
commit dca54007eb
5 changed files with 36 additions and 1 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2020-02-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/93964
* graphite-isl-ast-to-gimple.c
(gcc_expression_from_isl_ast_expr_id): Add intermediate
conversion for pointer to integer converts.
* graphite-scop-detection.c (assign_parameter_index_in_region):
Relax assert.
2020-03-04 Martin Liska <mliska@suse.cz>
PR c/93886

3
gcc/graphite-isl-ast-to-gimple.c
View file

@ -265,6 +265,9 @@ gcc_expression_from_isl_ast_expr_id (tree type,
tree t = res->second;
if (useless_type_conversion_p (type, TREE_TYPE (t)))
return t;
if (POINTER_TYPE_P (TREE_TYPE (t))
&& !POINTER_TYPE_P (type) && !ptrofftype_p (type))
t = fold_convert (sizetype, t);
return fold_convert (type, t);
}

1
gcc/graphite-scop-detection.c
View file

@ -1102,7 +1102,6 @@ static void
assign_parameter_index_in_region (tree name, sese_info_p region)
{
gcc_assert (TREE_CODE (name) == SSA_NAME
&& INTEGRAL_TYPE_P (TREE_TYPE (name))
&& ! defined_in_sese_p (name, region->region));
int i;
tree p;

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2020-02-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/93964
* gcc.dg/graphite/pr93964.c: New testcase.
2020-03-04 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/94001

19
gcc/testsuite/gcc.dg/graphite/pr93964.c Normal file
View file

@ -0,0 +1,19 @@
/* { dg-do compile } */
/* { dg-options "-O -floop-nest-optimize" } */
int *
eo (void);
void
g4 (int *nt)
{
int dh, t2 = (__INTPTR_TYPE__)eo ();
for (dh = 0; dh < 2; ++dh)
{
int m7;
for (m7 = 0; m7 < t2; ++m7)
nt[m7] = 0;
}
}