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-rw-r--r--patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch81
1 files changed, 0 insertions, 81 deletions
diff --git a/patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch b/patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch
deleted file mode 100644
index 82acfbc..0000000
--- a/patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch
+++ /dev/null
@@ -1,81 +0,0 @@
-Original patch from: ../4.3.2/160-flatten-switch-stmt-00.patch
-
--= BEGIN original header =-
-Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/18_all_904-flatten-switch-stmt-00.patch
-http://gcc.gnu.org/ml/gcc-patches/2007-04/msg00927.html
-
-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"
-
--= END original header =-
-
-diff -durN gcc-4.3.3.orig/gcc/stmt.c gcc-4.3.3/gcc/stmt.c
---- gcc-4.3.3.orig/gcc/stmt.c 2008-05-09 20:12:13.000000000 +0200
-+++ gcc-4.3.3/gcc/stmt.c 2009-01-27 22:19:28.000000000 +0100
-@@ -2509,7 +2509,11 @@
- 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);
- }
-@@ -3067,6 +3071,7 @@
- {
- 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,