patches/gcc/4.4.4/190-flatten-switch-stmt-00.patch
author Niels Penneman <niels@penneman.org>
Fri Jan 03 10:49:02 2014 +0100 (2014-01-03)
changeset 3268 d461981ab9cc
parent 1948 d341be24dc68
permissions -rw-r--r--
binutils/binutils: 2.24 is 2_24_or_later and experimental

Signed-off-by: Niels Penneman <niels@penneman.org>
Message-Id: <8cc1deb25227cd5c33c8.1388742700@i7sb.local>
Patchwork-Id: 306519
     1 diff -durN gcc-4.4.4.orig/gcc/stmt.c gcc-4.4.4/gcc/stmt.c
     2 --- gcc-4.4.4.orig/gcc/stmt.c	2010-03-08 12:46:28.000000000 +0100
     3 +++ gcc-4.4.4/gcc/stmt.c	2010-05-16 19:12:31.000000000 +0200
     4 @@ -2377,7 +2377,11 @@
     5  	  use_cost_table
     6  	    = (TREE_CODE (orig_type) != ENUMERAL_TYPE
     7  	       && estimate_case_costs (case_list));
     8 -	  balance_case_nodes (&case_list, NULL);
     9 +	  /* When optimizing for size, we want a straight list to avoid
    10 +	     jumps as much as possible. This basically creates an if-else
    11 +	     chain.  */
    12 +	  if (!optimize_size)
    13 +	    balance_case_nodes (&case_list, NULL);
    14  	  emit_case_nodes (index, case_list, default_label, index_type);
    15  	  if (default_label)
    16  	    emit_jump (default_label);
    17 @@ -2943,6 +2947,7 @@
    18  	    {
    19  	      if (!node_has_low_bound (node, index_type))
    20  		{
    21 +		  if (!optimize_size) /* don't jl to the .default_label. */
    22  		  emit_cmp_and_jump_insns (index,
    23  					   convert_modes
    24  					   (mode, imode,