2018-11-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88030
	* tree-complex.c (need_eh_cleanup): New global.
	(update_complex_assignment): Mark blocks that need EH update.
	(expand_complex_comparison): Likewise.
	(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
	perform EH cleanup and schedule CFG cleanup if that did anything.

	* gcc.dg/tsan/pr88030.c: New testcase.

From-SVN: r266175