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re PR fortran/57992 (Pointless packing of contiguous arrays for simply contiguous functions results as actual arguments) 

2019-01-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/57992
	* trans-array.c (gfc_conv_array_parameter):  Do not pack/unpack
	functions with contiguous results.

2019-01-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/59345
	* gfortran.dg/internal_pack_18.f90: New test.

From-SVN: r267905
This commit is contained in:
Thomas Koenig 2019-01-13 14:57:39 +00:00
parent 234c38181a
commit 8ef8fa9a4d
4 changed files with 29 additions and 1 deletions
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6
gcc/fortran/ChangeLog
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@ -1,3 +1,9 @@
2019-01-13 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57992
* trans-array.c (gfc_conv_array_parameter): Do not pack/unpack
functions with contiguous results.
2019-01-13 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/59345

4
gcc/fortran/trans-array.c
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@ -7894,7 +7894,9 @@ gfc_conv_array_parameter (gfc_se * se, gfc_expr * expr, bool g77,
{
gfc_symbol *result = expr->value.function.esym->result;
if (result->attr.dimension
&& (result->as->type == AS_EXPLICIT || result->attr.allocatable))
&& (result->as->type == AS_EXPLICIT
|| result->attr.allocatable
|| result->attr.contiguous))
no_pack = 1;
}
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-01-13 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/59345
* gfortran.dg/internal_pack_18.f90: New test.
2019-01-13 H.J. Lu <hongjiu.lu@intel.com>
* gcc.dg/pr51628-20.c: Updated.

15
gcc/testsuite/gfortran.dg/internal_pack_18.f90 Normal file
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@ -0,0 +1,15 @@
! { dg-do compile }
! { dg-additional-options "-fdump-tree-original" }
! PR 57992 - this was packed/unpacked unnecessarily.
! Original case by Tobias Burnus.
subroutine test
interface
function f2()
integer, pointer, contiguous :: f2(:)
end function f2
end interface
call bar(f2())
end subroutine test
! { dg-final { scan-tree-dump-not "_gfortran_internal_pack" "original" } }
! { dg-final { scan-tree-dump-not "_gfortran_internal_unpack" "original" } }