gimplify.c (gimplify_omp_depend): Load block from elt 5 instead of 4...

gimplify.c (gimplify_omp_depend): Load block from elt 5 instead of 4...

	* gimplify.c (gimplify_omp_depend): Load block from elt 5 instead
	of 4, in 4 expect to find original step expression, gimplify it and
	use it to determine if iterating upwards or downwards.  When iterating
	downwards with unsigned iterator type, negate both the difference and
	step before division.
gcc/c/
	* c-parser.c (c_parser_omp_iterators): Build vector with 6 elts
	instead of 5.
	(c_parser_omp_clause_depend): Put block into elt 5 instead of 4.
	* c-typeck.c (c_omp_finish_iterators): Remove iterator if step is
	errorneous, diagnose if step doesn't have integral type.  Remember
	original step expression wrapped with save_expr and store that to
	elt 4.
gcc/cp/
	* parser.c (cp_parser_omp_iterators): Build vector with 6 elts
	instead of 5.
	(cp_parser_omp_clause_depend): Put block into elt 5 instead of 4.
	* semantics.c (cp_omp_finish_iterators): Remove iterator if step is
	errorneous, diagnose if step doesn't have integral type.  Remember
	original step expression wrapped with save_expr and store that to
	elt 4.  If processing_template_decl, punt earlier if begin/end/step
	are type dependent expression, and only update step to the orig_step.
	* pt.c (tsubst_omp_clause_decl): Put block into elt 5 instead of 4.
gcc/testsuite/
	* c-c++-common/gomp/depend-iterator-2.c (f1): Adjust expected
	diagnostics, split the test with step 3.5 into one where only
	begin/end are floating point, and one where only step is floating
	point.
	* g++.dg/gomp/depend-iterator-2.C (f1, f3): Likewise.
libgomp/
	* testsuite/libgomp.c-c++-common/depend-iterator-1.c: Add tests for
	unsigned iterators, add gaps in between different arr2 bits.
	* testsuite/libgomp.c++/depend-iterator-1.C: Likewise.

From-SVN: r263274