FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR rtl-optimization/62078 (ICE: verify_flow_info failed: missing REG_EH_REGION note at the end of bb 2 with -fdelete-dead-exceptions)

Browse source 
PR rtl-optimization/62078
	* dse.c: Include cfgcleanup.h.
	(rest_of_handle_dse): For -fnon-call-exceptions, if DSE removed
	anything call purge_all_dead_edges and cleanup_cfg at the end
	of the pass.

	* g++.dg/opt/pr62078.C: New test.

From-SVN: r219970
This commit is contained in:
Jakub Jelinek 2015-01-21 22:51:43 +01:00 • committed by Jakub Jelinek
parent 31be63ab8c
commit 6c5ed3f18c
4 changed files with 56 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
gcc/ChangeLog
View file

@ -1,3 +1,11 @@
2015-01-21 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/62078
* dse.c: Include cfgcleanup.h.
(rest_of_handle_dse): For -fnon-call-exceptions, if DSE removed
anything call purge_all_dead_edges and cleanup_cfg at the end
of the pass.
2015-01-21 Jan Hubicka <hubicka@ucw.cz>
* ipa-utils.c (ipa_merge_profiles): Avoid ICE on mismatch in indirect

9
gcc/dse.c
View file

@ -81,6 +81,7 @@ along with GCC; see the file COPYING3. If not see
#include "gimple.h"
#include "gimple-ssa.h"
#include "rtl-iter.h"
#include "cfgcleanup.h"
/* This file contains three techniques for performing Dead Store
Elimination (dse).
@ -3746,6 +3747,14 @@ rest_of_handle_dse (void)
if (dump_file)
fprintf (dump_file, "dse: local deletions = %d, global deletions = %d, spill deletions = %d\n",
locally_deleted, globally_deleted, spill_deleted);
/* DSE can eliminate potentially-trapping MEMs.
Remove any EH edges associated with them. */
if ((locally_deleted || globally_deleted)
&& cfun->can_throw_non_call_exceptions
&& purge_all_dead_edges ())
cleanup_cfg (0);
return 0;
}

3
gcc/testsuite/ChangeLog
View file

@ -1,5 +1,8 @@
2015-01-21 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/62078
* g++.dg/opt/pr62078.C: New test.
PR c/63307
* c-c++-common/cilk-plus/CK/pr63307.c: New test.

36
gcc/testsuite/g++.dg/opt/pr62078.C Normal file
View file

@ -0,0 +1,36 @@
/* PR rtl-optimization/62078 */
/* { dg-do compile } */
/* { dg-options "-Og -fdelete-dead-exceptions -fnon-call-exceptions" } */
struct A { virtual ~A (); };
struct B : A {};
struct C : B {};
struct D : C {};
struct E : D {};
struct F : E {};
struct G : F {};
struct H : G {};
struct I : H {};
struct J : I {};
struct K : J {};
struct L : K {};
struct M : L {};
struct N : M {};
struct O : N {};
struct P : O {};
struct Q : P {};
struct R : Q {};
struct S : R {};
struct T : S {};
struct U : T {};
struct V : U {};
struct W : V {};
struct X : W {};
struct Y : X {};
struct Z : Y {};
void
foo ()
{
Z z;
}