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re PR tree-optimization/89278 (ICE in gimplify_modify_expr, at gimplify.c:5821)

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PR tree-optimization/89278
	* tree-loop-distribution.c: Include tree-eh.h.
	(generate_memset_builtin, generate_memcpy_builtin): Call
	rewrite_to_non_trapping_overflow on builtin->size before passing it
	to force_gimple_operand_gsi.

	* gcc.dg/pr89278.c: New test.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r268927
This commit is contained in:
Richard Biener 2019-02-15 07:39:45 +00:00 committed by Jakub Jelinek
parent 5f88ba10e0
commit 4c9ed22ae0
4 changed files with 41 additions and 2 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2019-02-15 Richard Biener <rguenther@suse.de>
Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/89278
* tree-loop-distribution.c: Include tree-eh.h.
(generate_memset_builtin, generate_memcpy_builtin): Call
rewrite_to_non_trapping_overflow on builtin->size before passing it
to force_gimple_operand_gsi.
2019-02-15 Jakub Jelinek <jakub@redhat.com>
PR other/89342

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2019-02-15 Richard Biener <rguenther@suse.de>
Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/89278
* gcc.dg/pr89278.c: New test.
2019-02-15 Jakub Jelinek <jakub@redhat.com>
PR c/89340

23
gcc/testsuite/gcc.dg/pr89278.c Normal file
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@ -0,0 +1,23 @@
/* PR tree-optimization/89278 */
/* { dg-do compile } */
/* { dg-options "-O1 -ftrapv -ftree-loop-distribute-patterns --param max-loop-header-insns=2" } */
void
foo (int *w, int x, int y, int z)
{
while (x < y + z)
{
w[x] = 0;
++x;
}
}
void
bar (int *__restrict u, int *__restrict w, int x, int y, int z)
{
while (x < y + z)
{
w[x] = u[x];
++x;
}
}

5
gcc/tree-loop-distribution.c
View File

@ -114,6 +114,7 @@ along with GCC; see the file COPYING3. If not see
#include "tree-scalar-evolution.h"
#include "params.h"
#include "tree-vectorizer.h"
#include "tree-eh.h"
#define MAX_DATAREFS_NUM \
@ -996,7 +997,7 @@ generate_memset_builtin (struct loop *loop, partition *partition)
/* The new statements will be placed before LOOP. */
gsi = gsi_last_bb (loop_preheader_edge (loop)->src);
nb_bytes = builtin->size;
nb_bytes = rewrite_to_non_trapping_overflow (builtin->size);
nb_bytes = force_gimple_operand_gsi (&gsi, nb_bytes, true, NULL_TREE,
false, GSI_CONTINUE_LINKING);
mem = builtin->dst_base;
@ -1048,7 +1049,7 @@ generate_memcpy_builtin (struct loop *loop, partition *partition)
/* The new statements will be placed before LOOP. */
gsi = gsi_last_bb (loop_preheader_edge (loop)->src);
nb_bytes = builtin->size;
nb_bytes = rewrite_to_non_trapping_overflow (builtin->size);
nb_bytes = force_gimple_operand_gsi (&gsi, nb_bytes, true, NULL_TREE,
false, GSI_CONTINUE_LINKING);
dest = builtin->dst_base;