* Makefile.in (gcse.o): Add $(TREE_H) to dependencies.
* gcse.c: Include tree.h.
(implicit_set_cond_p): New.
(find_implicit_sets): Call it.
* gcc.c-torture/execute/ieee/mzero5.c: New.

Co-Authored-By: Roger Sayle <roger@eyesopen.com>

From-SVN: r74769