patches/gcc/4.4.6/190-flatten-switch-stmt-00.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Mon Jul 23 22:02:23 2012 +0200 (2012-07-23)
changeset 3012 95173b196a88
parent 2149 98b7806295cc
permissions -rw-r--r--
scripts+samples: fix listings the samples

Since we use defconfigs to save the samples, listing all the
samples can no longer be done by passing all the sample names
at one to the script; we need to pass them one-by-one after
we expand the sample's defconfig ibnto a complete .config.

Reported-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
yann@2149
     1
diff -durN gcc-4.4.5.orig/gcc/stmt.c gcc-4.4.5/gcc/stmt.c
yann@2149
     2
--- gcc-4.4.5.orig/gcc/stmt.c	2010-03-08 12:46:28.000000000 +0100
yann@2149
     3
+++ gcc-4.4.5/gcc/stmt.c	2010-10-09 23:01:01.000000000 +0200
yann@2149
     4
@@ -2377,7 +2377,11 @@
yann@2149
     5
 	  use_cost_table
yann@2149
     6
 	    = (TREE_CODE (orig_type) != ENUMERAL_TYPE
yann@2149
     7
 	       && estimate_case_costs (case_list));
yann@2149
     8
-	  balance_case_nodes (&case_list, NULL);
yann@2149
     9
+	  /* When optimizing for size, we want a straight list to avoid
yann@2149
    10
+	     jumps as much as possible. This basically creates an if-else
yann@2149
    11
+	     chain.  */
yann@2149
    12
+	  if (!optimize_size)
yann@2149
    13
+	    balance_case_nodes (&case_list, NULL);
yann@2149
    14
 	  emit_case_nodes (index, case_list, default_label, index_type);
yann@2149
    15
 	  if (default_label)
yann@2149
    16
 	    emit_jump (default_label);
yann@2149
    17
@@ -2943,6 +2947,7 @@
yann@2149
    18
 	    {
yann@2149
    19
 	      if (!node_has_low_bound (node, index_type))
yann@2149
    20
 		{
yann@2149
    21
+		  if (!optimize_size) /* don't jl to the .default_label. */
yann@2149
    22
 		  emit_cmp_and_jump_insns (index,
yann@2149
    23
 					   convert_modes
yann@2149
    24
 					   (mode, imode,