Add non-folding variants for convert_to_*.

Add non-folding variants for convert_to_*.

2015-11-13  Kai Tietz  <ktietz70@googlemail.com>
	    Marek Polacek  <polacek@redhat.com>
	    Jason Merrill  <jason@redhat.com>

gcc/
	* convert.c (maybe_fold_build1_loc): New.
	(maybe_fold_build2_loc): New.
	(convert_to_pointer_1): Split out from convert_to_pointer.
	(convert_to_pointer_nofold): New.
	(convert_to_real_1): Split out from convert_to_real.
	(convert_to_real_nofold): New.
	(convert_to_integer_1): Split out from convert_to_integer.
	(convert_to_integer_nofold): New.
	(convert_to_complex_1): Split out from convert_to_complex.
	(convert_to_complex_nofold): New.
	* convert.h: Declare new functions.
	* tree-complex.c (create_one_component_var): Break up line to
	avoid sequence point issues.
gcc/c-family/
	* c-lex.c (interpret_float): Use fold_convert.

Co-Authored-By: Jason Merrill <jason@redhat.com>
Co-Authored-By: Marek Polacek <polacek@redhat.com>
From-SVN: r230359