re PR middle-end/54782 (ICE: in change_scope, at final.c:1543 with -O -ffast-math -ftree-parallelize-loops=2 -g)

2012-10-03  Dehao Chen  <dehao@google.com>

gcc:
	PR middle-end/54782
	* tree-cfg.c (move_block_to_fn): Update lexical block for phi_args.

testsuite:
	PR middle-end/54782
	* gcc.dg/pr54782.c: New test.

From-SVN: r192049