X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_emitter.c;h=d9e12706d38531b084646b014ffce855770a34cb;hb=eb593ca265a302849042866b57a3cf7a6e9495ab;hp=d377143b0af700954862016768d01af9254fa5f0;hpb=5cb14f12bacb0c7d1c646112b4660d57e14236a2;p=libfirm

diff --git a/ir/be/ia32/ia32_emitter.c b/ir/be/ia32/ia32_emitter.c
index d377143b0..d9e12706d 100644
--- a/ir/be/ia32/ia32_emitter.c
+++ b/ir/be/ia32/ia32_emitter.c
@@ -74,6 +74,7 @@ static ia32_code_gen_t  *cg;
 static int               do_pic;
 static char              pic_base_label[128];
 static ir_label_t        exc_label_id;
+static int               mark_spill_reload = 0;
 
 /** Return the next block in Block schedule */
 static ir_node *get_prev_block_sched(const ir_node *block)
@@ -701,10 +702,6 @@ static int determine_final_pnc(const ir_node *node, int flags_pos,
 			pnc = get_mirrored_pnc(pnc);
 		pnc |= ia32_pn_Cmp_float;
 	} else {
-#if 0
-		assert(is_ia32_Cmp(flags) || is_ia32_Test(flags)
-				|| is_ia32_Cmp8Bit(flags) || is_ia32_Test8Bit(flags));
-#endif
 		flags_attr = get_ia32_attr_const(flags);
 
 		if (flags_attr->data.ins_permuted)
@@ -1934,9 +1931,25 @@ static void ia32_emit_node(ir_node *node)
 
 	DBG((dbg, LEVEL_1, "emitting code for %+F\n", node));
 
-	if (is_ia32_irn(node) && get_ia32_exc_label(node)) {
-		/* emit the exception label of this instruction */
-		ia32_assign_exc_label(node);
+	if (is_ia32_irn(node)) {
+		if (get_ia32_exc_label(node)) {
+			/* emit the exception label of this instruction */
+			ia32_assign_exc_label(node);
+		}
+		if (mark_spill_reload) {
+			if (is_ia32_is_spill(node)) {
+				be_emit_cstring("\txchg %ebx, %ebx        /* spill mark */\n");
+				be_emit_write_line();
+			}
+			if (is_ia32_is_reload(node)) {
+				be_emit_cstring("\txchg %edx, %edx        /* reload mark */\n");
+				be_emit_write_line();
+			}
+			if (is_ia32_is_remat(node)) {
+				be_emit_cstring("\txchg %ecx, %ecx        /* remat mark */\n");
+				be_emit_write_line();
+			}
+		}
 	}
 	if (op->ops.generic) {
 		emit_func_ptr func = (emit_func_ptr) op->ops.generic;
@@ -2232,7 +2245,20 @@ void ia32_gen_routine(ia32_code_gen_t *ia32_cg, ir_graph *irg)
 	DEL_ARR_F(exc_list);
 }
 
+static const lc_opt_table_entry_t ia32_emitter_options[] = {
+	LC_OPT_ENT_BOOL("mark_spill_reload",   "mark spills and reloads with ud opcodes", &mark_spill_reload),
+	LC_OPT_LAST
+};
+
 void ia32_init_emitter(void)
 {
+	lc_opt_entry_t *be_grp;
+	lc_opt_entry_t *ia32_grp;
+
+	be_grp   = lc_opt_get_grp(firm_opt_get_root(), "be");
+	ia32_grp = lc_opt_get_grp(be_grp, "ia32");
+
+	lc_opt_add_table(ia32_grp, ia32_emitter_options);
+
 	FIRM_DBG_REGISTER(dbg, "firm.be.ia32.emitter");
 }