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re PR middle-end/45505 (gfortran.dg/pr25923.f90) 

2011-02-09  Martin Jambor  <mjambor@suse.cz>

	PR middle-end/45505
	* tree-sra.c (struct access): New flags grp_scalar_read and
	grp_scalar_write.  Changed description of assignment read and write
	flags.
	(dump_access): Dump new flags, reorder all of them.
	(sort_and_splice_var_accesses): Set the new flag accordingly, use them
	to detect multiple scalar reads.
	(analyze_access_subtree): Use the new scalar read write flags instead
	of the old flags.  Adjusted comments.

	* testsuite/gfortran.dg/pr25923.f90: Remove xfails.

From-SVN: r169964
This commit is contained in:
Martin Jambor 2011-02-09 12:48:09 +01:00 committed by Martin Jambor
parent 1bbb474148
commit 4fd7321445
4 changed files with 62 additions and 23 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2011-02-09 Martin Jambor <mjambor@suse.cz>
PR middle-end/45505
* tree-sra.c (struct access): New flags grp_scalar_read and
grp_scalar_write. Changed description of assignment read and write
flags.
(dump_access): Dump new flags, reorder all of them.
(sort_and_splice_var_accesses): Set the new flag accordingly, use them
to detect multiple scalar reads.
(analyze_access_subtree): Use the new scalar read write flags instead
of the old flags. Adjusted comments.
2011-02-08 DJ Delorie <dj@redhat.com>
PR target/47548

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2011-02-09 Martin Jambor <mjambor@suse.cz>
PR middle-end/45505
* gfortran.dg/pr25923.f90: Remove xfails.
2011-02-08 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/47583

4
gcc/testsuite/gfortran.dg/pr25923.f90
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@ -10,7 +10,7 @@ implicit none
contains
function baz(arg) result(res) ! { dg-bogus "res.yr' may be" "PR45505" { xfail ilp32 } }
function baz(arg) result(res) ! { dg-bogus "res.yr' may be" }
type(bar), intent(in) :: arg
type(bar) :: res
logical, external:: some_func
@ -19,7 +19,7 @@ contains
else
res = arg
end if
end function baz ! { dg-warning "res.yr' may be" "PR45505" { xfail ilp32 } }
end function baz ! { dg-warning "res.yr' may be" }
end module foo

64
gcc/tree-sra.c
View File

@ -195,6 +195,14 @@ struct access
statement? This flag is propagated down the access tree. */
unsigned grp_assignment_write : 1;
/* Does this group contain a read access through a scalar type? This flag is
not propagated in the access tree in any direction. */
unsigned grp_scalar_read : 1;
/* Does this group contain a write access through a scalar type? This flag
is not propagated in the access tree in any direction. */
unsigned grp_scalar_write : 1;
/* Other passes of the analysis use this bit to make function
analyze_access_subtree create scalar replacements for this group if
possible. */
@ -368,16 +376,18 @@ dump_access (FILE *f, struct access *access, bool grp)
fprintf (f, ", type = ");
print_generic_expr (f, access->type, 0);
if (grp)
fprintf (f, ", grp_write = %d, total_scalarization = %d, "
"grp_read = %d, grp_hint = %d, grp_assignment_read = %d,"
"grp_assignment_write = %d, grp_covered = %d, "
fprintf (f, ", total_scalarization = %d, grp_read = %d, grp_write = %d, "
"grp_assignment_read = %d, grp_assignment_write = %d, "
"grp_scalar_read = %d, grp_scalar_write = %d, "
"grp_hint = %d, grp_covered = %d, "
"grp_unscalarizable_region = %d, grp_unscalarized_data = %d, "
"grp_partial_lhs = %d, grp_to_be_replaced = %d, "
"grp_maybe_modified = %d, "
"grp_not_necessarilly_dereferenced = %d\n",
access->grp_write, access->total_scalarization,
access->grp_read, access->grp_hint, access->grp_assignment_read,
access->grp_assignment_write, access->grp_covered,
access->total_scalarization, access->grp_read, access->grp_write,
access->grp_assignment_read, access->grp_assignment_write,
access->grp_scalar_read, access->grp_scalar_write,
access->grp_hint, access->grp_covered,
access->grp_unscalarizable_region, access->grp_unscalarized_data,
access->grp_partial_lhs, access->grp_to_be_replaced,
access->grp_maybe_modified,
@ -1593,9 +1603,13 @@ sort_and_splice_var_accesses (tree var)
struct access *access = VEC_index (access_p, access_vec, i);
bool grp_write = access->write;
bool grp_read = !access->write;
bool grp_scalar_write = access->write
&& is_gimple_reg_type (access->type);
bool grp_scalar_read = !access->write
&& is_gimple_reg_type (access->type);
bool grp_assignment_read = access->grp_assignment_read;
bool grp_assignment_write = access->grp_assignment_write;
bool multiple_reads = false;
bool multiple_scalar_reads = false;
bool total_scalarization = access->total_scalarization;
bool grp_partial_lhs = access->grp_partial_lhs;
bool first_scalar = is_gimple_reg_type (access->type);
@ -1620,13 +1634,21 @@ sort_and_splice_var_accesses (tree var)
if (ac2->offset != access->offset || ac2->size != access->size)
break;
if (ac2->write)
grp_write = true;
{
grp_write = true;
grp_scalar_write = (grp_scalar_write
|| is_gimple_reg_type (ac2->type));
}
else
{
if (grp_read)
multiple_reads = true;
else
grp_read = true;
grp_read = true;
if (is_gimple_reg_type (ac2->type))
{
if (grp_scalar_read)
multiple_scalar_reads = true;
else
grp_scalar_read = true;
}
}
grp_assignment_read |= ac2->grp_assignment_read;
grp_assignment_write |= ac2->grp_assignment_write;
@ -1648,9 +1670,11 @@ sort_and_splice_var_accesses (tree var)
access->group_representative = access;
access->grp_write = grp_write;
access->grp_read = grp_read;
access->grp_scalar_read = grp_scalar_read;
access->grp_scalar_write = grp_scalar_write;
access->grp_assignment_read = grp_assignment_read;
access->grp_assignment_write = grp_assignment_write;
access->grp_hint = multiple_reads || total_scalarization;
access->grp_hint = multiple_scalar_reads || total_scalarization;
access->grp_partial_lhs = grp_partial_lhs;
access->grp_unscalarizable_region = unscalarizable_region;
if (access->first_link)
@ -1851,13 +1875,13 @@ enum mark_rw_status { SRA_MRRW_NOTHING, SRA_MRRW_DIRECT, SRA_MRRW_ASSIGN};
there is more than one direct read access) or according to the following
table:
Access written to individually (once or more times)
Access written to through a scalar type (once or more times)
|
| Parent written to in an assignment statement
| Written to in an assignment statement
| |
| | Access read individually _once_
| | Access read as scalar _once_
| | |
| | | Parent read in an assignment statement
| | | Read in an assignment statement
| | | |
| | | | Scalarize Comment
-----------------------------------------------------------------------------
@ -1888,8 +1912,6 @@ analyze_access_subtree (struct access *root, bool allow_replacements,
HOST_WIDE_INT covered_to = root->offset;
bool scalar = is_gimple_reg_type (root->type);
bool hole = false, sth_created = false;
bool direct_read = root->grp_read;
bool direct_write = root->grp_write;
if (root->grp_assignment_read)
mark_read = SRA_MRRW_ASSIGN;
@ -1938,8 +1960,8 @@ analyze_access_subtree (struct access *root, bool allow_replacements,
if (allow_replacements && scalar && !root->first_child
&& (root->grp_hint
|| ((direct_write || root->grp_assignment_write)
&& (direct_read || root->grp_assignment_read))))
|| ((root->grp_scalar_read || root->grp_assignment_read)
&& (root->grp_scalar_write || root->grp_assignment_write))))
{
if (dump_file && (dump_flags & TDF_DETAILS))
{