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re PR tree-optimization/69466 (ICE: Invalid PHI argument after vectorization (on -O2))

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2016-01-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69466
	* tree-vect-loop-manip.c (slpeel_duplicate_current_defs_from_edges):
	Account for PHIs we couldn't duplicate.

	* gfortran.dg/vect/pr69466.f90: New testcase.

From-SVN: r232916
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Richard Biener 2016-01-28 09:10:30 +00:00 committed by Richard Biener
parent c132770ebf
commit 14ba8d6d07
4 changed files with 67 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/69466
* tree-vect-loop-manip.c (slpeel_duplicate_current_defs_from_edges):
Account for PHIs we couldn't duplicate.
2016-01-28 Martin Liska <mliska@suse.cz>
PR pch/68758

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/69466
* gfortran.dg/vect/pr69466.f90: New testcase.
2016-01-28 Thomas Preud'homme <thomas.preudhomme@arm.com>
* g++.dg/pr67989.C: Remove ARM-specific option.

42
gcc/testsuite/gfortran.dg/vect/pr69466.f90 Normal file
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@ -0,0 +1,42 @@
! { dg-do compile }
! { dg-additional-options "-march=core-avx2" { target x86_64-*-* i?86-*-* } }
subroutine foo
integer :: a, b, c, d, e
integer, dimension(:), allocatable :: f, g, h
call zoo (a)
call zoo (b)
call zoo (c)
if(a == b) then
allocate(g(0:d-1), h(0:d-1))
else
allocate(g(1), h(1))
if (b /= 0) then
call zoo(b)
endif
endif
if(a == b) then
do d=0,c-1
e = e + g(d)
if(d == 0) then
h(d) = 0
else
h(d) = h(d-1) + g(d-1)
endif
end do
endif
if(a == b) then
allocate(f(e), g(e))
endif
if(a == 0) then
call boo(e)
endif
end subroutine foo

19
gcc/tree-vect-loop-manip.c
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@ -727,17 +727,26 @@ slpeel_duplicate_current_defs_from_edges (edge from, edge to)
for (gsi_from = gsi_start_phis (from->dest),
gsi_to = gsi_start_phis (to->dest);
!gsi_end_p (gsi_from) && !gsi_end_p (gsi_to);
gsi_next (&gsi_from), gsi_next (&gsi_to))
!gsi_end_p (gsi_from) && !gsi_end_p (gsi_to);)
{
gimple *from_phi = gsi_stmt (gsi_from);
gimple *to_phi = gsi_stmt (gsi_to);
tree from_arg = PHI_ARG_DEF_FROM_EDGE (from_phi, from);
if (TREE_CODE (from_arg) != SSA_NAME)
{
gsi_next (&gsi_from);
continue;
}
tree to_arg = PHI_ARG_DEF_FROM_EDGE (to_phi, to);
if (TREE_CODE (from_arg) == SSA_NAME
&& TREE_CODE (to_arg) == SSA_NAME
&& get_current_def (to_arg) == NULL_TREE)
if (TREE_CODE (to_arg) != SSA_NAME)
{
gsi_next (&gsi_to);
continue;
}
if (get_current_def (to_arg) == NULL_TREE)
set_current_def (to_arg, get_current_def (from_arg));
gsi_next (&gsi_from);
gsi_next (&gsi_to);
}
}