patches/gcc/4.2.4/260-flatten-switch-stmt-00.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Dec 31 16:23:27 2011 +0100 (2011-12-31)
changeset 2814 3dc2727ebffc
parent 687 b2b6b1d46aa1
permissions -rw-r--r--
cc/gcc: add option to use system zlib

In some cases, it might be desirable to use the system zlib

Eg. because latest gcc seem to be totally borked when it comes
to multilib, and tries to build a multilib host zlib, when it
is *absolutely* *not* needed: we want mulitlib on the target,
not on the host! Sigh... :-(

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 diff -durN gcc-4.2.1.orig/gcc/stmt.c gcc-4.2.1/gcc/stmt.c
     2 --- gcc-4.2.1.orig/gcc/stmt.c	2007-07-19 05:25:32.000000000 +0200
     3 +++ gcc-4.2.1/gcc/stmt.c	2007-08-03 20:37:19.000000000 +0200
     4 @@ -2512,7 +2512,11 @@
     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  	  emit_jump (default_label);
    16  	}
    17 @@ -3070,6 +3074,7 @@
    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,