X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_common_transform.c;h=5241adb5ea4ab768c05392dfb80ce5e3112b314b;hb=4d808298b72e72bd06c7466e837dd9dda4eb1070;hp=82a9cde77b42c7be59280abf785e2b7825703eba;hpb=cbcf8b93de62865b8564e6a47aca7a28790b65ad;p=libfirm

diff --git a/ir/be/ia32/ia32_common_transform.c b/ir/be/ia32/ia32_common_transform.c
index 82a9cde77..5241adb5e 100644
--- a/ir/be/ia32/ia32_common_transform.c
+++ b/ir/be/ia32/ia32_common_transform.c
@@ -226,7 +226,6 @@ int ia32_mode_needs_gp_reg(ir_mode *mode) {
 static void parse_asm_constraints(constraint_t *constraint, const char *c,
                            int is_output)
 {
-	asm_constraint_flags_t       flags              = 0;
 	char                         immediate_type     = '\0';
 	unsigned                     limited            = 0;
 	const arch_register_class_t *cls                = NULL;
@@ -254,15 +253,9 @@ static void parse_asm_constraints(constraint_t *constraint, const char *c,
 		case '\n':
 			break;
 
-		case '=':
-			flags |= ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
-				| ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
-			break;
-
-		case '+':
-			flags |= ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
-				| ASM_CONSTRAINT_FLAG_MODIFIER_READ;
-			break;
+		/* Skip out/in-out marker */
+		case '=': break;
+		case '+': break;
 
 		case '*':
 			++c;
@@ -659,6 +652,12 @@ ir_node *gen_ASM(ir_node *node)
 	new_node = new_rd_ia32_Asm(dbgi, irg, new_block, arity, in, out_arity,
 	                           get_ASM_text(node), register_map);
 
+	/* Prevent the ASM node from being scheduled before the Barrier, if it has
+	 * no inputs */
+	if (arity == 0 && get_irg_start_block(irg) == new_block) {
+		add_irn_dep(new_node, get_irg_frame(irg));
+	}
+
 	set_ia32_out_req_all(new_node, out_reg_reqs);
 	set_ia32_in_req_all(new_node, in_reg_reqs);