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-rw-r--r--patches/gcc/4.2.4/260-flatten-switch-stmt-00.patch24
1 files changed, 24 insertions, 0 deletions
diff --git a/patches/gcc/4.2.4/260-flatten-switch-stmt-00.patch b/patches/gcc/4.2.4/260-flatten-switch-stmt-00.patch
new file mode 100644
index 0000000..6c40c57
--- /dev/null
+++ b/patches/gcc/4.2.4/260-flatten-switch-stmt-00.patch
@@ -0,0 +1,24 @@
+diff -durN gcc-4.2.1.orig/gcc/stmt.c gcc-4.2.1/gcc/stmt.c
+--- gcc-4.2.1.orig/gcc/stmt.c 2007-07-19 05:25:32.000000000 +0200
++++ gcc-4.2.1/gcc/stmt.c 2007-08-03 20:37:19.000000000 +0200
+@@ -2512,7 +2512,11 @@
+ use_cost_table
+ = (TREE_CODE (orig_type) != ENUMERAL_TYPE
+ && estimate_case_costs (case_list));
+- balance_case_nodes (&case_list, NULL);
++ /* When optimizing for size, we want a straight list to avoid
++ jumps as much as possible. This basically creates an if-else
++ chain. */
++ if (!optimize_size)
++ balance_case_nodes (&case_list, NULL);
+ emit_case_nodes (index, case_list, default_label, index_type);
+ emit_jump (default_label);
+ }
+@@ -3070,6 +3074,7 @@
+ {
+ if (!node_has_low_bound (node, index_type))
+ {
++ if (!optimize_size) /* don't jl to the .default_label. */
+ emit_cmp_and_jump_insns (index,
+ convert_modes
+ (mode, imode,