[committed] openmp, fortran: Fix up IFN_ASSUME call

[Jakub Jelinek <jakub@redhat.com>]

On Thu, Oct 06, 2022 at 06:15:52PM +0200, Tobias Burnus wrote:
> Like as attached? – It did survive regtesting.

Like in other spots in trans-openmp.cc that create a TARGET_EXPR, the
slot has to be created with create_tmp_var_raw, because gfc_create_var
adds the var to BLOCK_VARS and that ICEs during expansion because
gimple_add_tmp_var_fn has:
  gcc_assert (!DECL_CHAIN (tmp) && !DECL_SEEN_IN_BIND_EXPR_P (tmp));
assertion.  Also, both C/C++ ensure the argument to IFN_ASSUME has
boolean_type_node, it is easier if Fortran does that too.

Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk.

2022-10-10  Jakub Jelinek  <jakub@redhat.com>

	* trans-openmp.cc (gfc_trans_omp_assume): Use create_tmp_var_raw
	instead of gfc_create_var for TARGET_EXPR slot creation.  Create it
	with boolean_type_node and convert.

--- gcc/fortran/trans-openmp.cc.jj	2022-10-07 00:13:12.508191601 +0200
+++ gcc/fortran/trans-openmp.cc	2022-10-09 14:17:55.430364168 +0200
@@ -4588,11 +4588,14 @@ gfc_trans_omp_assume (gfc_code *code)
 	  t = se.expr;
 	else
 	  {
-	    tree var = gfc_create_var (TREE_TYPE (se.expr), NULL);
+	    tree var = create_tmp_var_raw (boolean_type_node);
+	    DECL_CONTEXT (var) = current_function_decl;
 	    stmtblock_t block2;
 	    gfc_init_block (&block2);
 	    gfc_add_block_to_block (&block2, &se.pre);
-	    gfc_add_modify_loc (loc, &block2, var, se.expr);
+	    gfc_add_modify_loc (loc, &block2, var,
+	    			fold_convert_loc (loc, boolean_type_node,
+						  se.expr));
 	    gfc_add_block_to_block (&block2, &se.post);
 	    t = gfc_finish_block (&block2);
 	    t = build4 (TARGET_EXPR, boolean_type_node, var, t, NULL, NULL);

	Jakub