Emit a block header for the start block of functions.

[r24085]

diff --git a/ir/be/ia32/ia32_emitter.c b/ir/be/ia32/ia32_emitter.c
index c6a7ec2..135ff9a 100644 (file)
--- a/ir/be/ia32/ia32_emitter.c
+++ b/ir/be/ia32/ia32_emitter.c
@@ -1932,7 +1932,7 @@ static void ia32_emit_block_header(ir_node *block)
        int           i, arity;
        ir_exec_freq *exec_freq = cg->birg->exec_freq;
 
-       if (block == get_irg_end_block(irg) || block == get_irg_start_block(irg))
+       if (block == get_irg_end_block(irg))
                return;
 
        if (ia32_cg_config.label_alignment > 0) {
@@ -1977,12 +1977,16 @@ static void ia32_emit_block_header(ir_node *block)
 
        /* emit list of pred blocks in comment */
        arity = get_irn_arity(block);
-       for (i = 0; i < arity; ++i) {
-               ir_node *predblock = get_Block_cfgpred_block(block, i);
-               be_emit_irprintf(" %d", get_irn_node_nr(predblock));
+       if (arity <= 0) {
+               be_emit_cstring(" none");
+       } else {
+               for (i = 0; i < arity; ++i) {
+                       ir_node *predblock = get_Block_cfgpred_block(block, i);
+                       be_emit_irprintf(" %d", get_irn_node_nr(predblock));
+               }
        }
        if (exec_freq != NULL) {
-               be_emit_irprintf(" freq: %f",
+               be_emit_irprintf(", freq: %f",
                                 get_block_execfreq(exec_freq, block));
        }
        be_emit_cstring(" */\n");