re PR tree-optimization/82355 (ICE in outermost_loop_in_sese, at sese.c:301)

2017-10-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82355
	* graphite-isl-ast-to-gimple.c (build_iv_mapping): Also build
	a mapping for the enclosing loop but avoid generating one for
	the loop tree root.
	(copy_bb_and_scalar_dependences): Remove premature codegen
	error on PHIs in blocks duplicated into multiple places.
	* graphite-scop-detection.c
	(scop_detection::stmt_has_simple_data_refs_p): For a loop not
	in the region use it as loop and nest to analyze the DR in.
	(try_generate_gimple_bb): Likewise.
	* graphite-sese-to-poly.c (extract_affine_chrec): Adjust.
	(add_loop_constraints): For blocks in a loop not in the region
	create a dimension with a single iteration.
	* sese.h (gbb_loop_at_index): Remove assert.

	* gcc.dg/graphite/fuse-1.c: Adjust.
	* gcc.dg/graphite/fuse-2.c: Likewise.
	* gcc.dg/graphite/pr82355.c: New testcase.

From-SVN: r253336

1 files changed, 0 insertions, 2 deletions

diff --git a/gcc/sese.h b/gcc/sese.h
index 3bdb34c..f1371ee 100644
--- a/gcc/sese.h
+++ b/gcc/sese.h
@@ -326,8 +326,6 @@ gbb_loop_at_index (gimple_poly_bb_p gbb, sese_l &region, int index)
   while (--depth > index)
     loop = loop_outer (loop);
 
-  gcc_assert (loop_in_sese_p (loop, region));
-
   return loop;
 }