[backfire] cleanup: toolchain/gcc: remove "broken" stuff

[openwrt-10.03/.git] / toolchain / gcc / patches / llvm / 904-flatten-switch-stmt-00.patch

diff --git a/toolchain/gcc/patches/llvm/904-flatten-switch-stmt-00.patch b/toolchain/gcc/patches/llvm/904-flatten-switch-stmt-00.patch
deleted file mode 100644 (file)
index f3a6372..0000000
--- a/toolchain/gcc/patches/llvm/904-flatten-switch-stmt-00.patch
+++ /dev/null
@@ -1,72 +0,0 @@
-Hi,
-
-The attached patch makes sure that we create smaller object code for
-simple switch statements. We just make sure to flatten the switch
-statement into an if-else chain, basically.
-
-This fixes a size-regression as compared to gcc-3.4, as can be seen
-below.
-
-2007-04-15  Bernhard Fischer  <..>
-
-       * stmt.c (expand_case): Do not create a complex binary tree when
-       optimizing for size but rather use the simple ordered list.
-       (emit_case_nodes): do not emit jumps to the default_label when
-       optimizing for size.
-
-Not regtested so far.
-Comments?
-
-Attached is the test switch.c mentioned below.
-
-$ for i in 2.95 3.3 3.4 4.0 4.1 4.2.orig-HEAD 4.3.orig-HEAD 4.3-HEAD;do
-gcc-$i  -DCHAIN -Os -o switch-CHAIN-$i.o -c switch.c ;done
-$ for i in 2.95 3.3 3.4 4.0 4.1 4.2.orig-HEAD 4.3.orig-HEAD 4.3-HEAD;do
-gcc-$i  -UCHAIN -Os -o switch-$i.o -c switch.c ;done
-
-$ size switch-*.o
-   text           data     bss     dec     hex filename
-    169              0       0     169      a9 switch-2.95.o
-    115              0       0     115      73 switch-3.3.o
-    103              0       0     103      67 switch-3.4.o
-    124              0       0     124      7c switch-4.0.o
-    124              0       0     124      7c switch-4.1.o
-    124              0       0     124      7c switch-4.2.orig-HEAD.o
-     95              0       0      95      5f switch-4.3-HEAD.o
-    124              0       0     124      7c switch-4.3.orig-HEAD.o
-    166              0       0     166      a6 switch-CHAIN-2.95.o
-    111              0       0     111      6f switch-CHAIN-3.3.o
-     95              0       0      95      5f switch-CHAIN-3.4.o
-     95              0       0      95      5f switch-CHAIN-4.0.o
-     95              0       0      95      5f switch-CHAIN-4.1.o
-     95              0       0      95      5f switch-CHAIN-4.2.orig-HEAD.o
-     95              0       0      95      5f switch-CHAIN-4.3-HEAD.o
-     95              0       0      95      5f switch-CHAIN-4.3.orig-HEAD.o
-
-
-Content-Type: text/x-diff; charset=us-ascii
-Content-Disposition: attachment; filename="gcc-4.3.gcc-flatten-switch-stmt.00.diff"
-
---- a/gcc/stmt.c
-+++ b/gcc/stmt.c
-@@ -2574,7 +2574,11 @@ expand_case (tree exp)
-         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);
-       }
-@@ -3136,6 +3140,7 @@ emit_case_nodes (rtx index, case_node_pt
-           {
-             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,