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authorBryan Hundven <bryanhundven@gmail.com>2015-10-29 23:16:51 (GMT)
committerBryan Hundven <bryanhundven@gmail.com>2015-10-31 19:17:35 (GMT)
commit1a25115a1851d3defdf4d37825d8a291be078e53 (patch)
tree5d162f6cc7b9274f640584a63d337ec455bd0613 /patches/gcc/4.3.4/160-flatten-switch-stmt-00.patch
parent55d8497fea996b070d8e7f6f6898e99e9981337a (diff)
gcc: Support only the latest branch releases of gcc
This change, as per #222, reduces the number of supported releases of gcc to the latest branch releases. I noticed while doing this work that gcc-4.5.4 was never added, so I moved patches for gcc-4.5.3 to 4.5.4 and updated the bfin-unknown-linux-uclibc example. Also, 120-siginfo.patch was fixed upstream in the 4.5.4 release, so this patch is omitted. I also bumped the avr sample to 4.9.3 from 4.9.2. With the addition of gcc-5.x, the gcc release team now releases the major.minor.0 versions, while updates to the branch are available in svn/git. We'll address that when we get to issue #219. This change just removes CC_GCC_5_1 and moves CC_GCC_5_2 to CC_GCC_5, and removes CC_GCC_5_1_or_later and moves CC_GCC_5_2_or_later to CC_GCC_5_or_later. This is the first of two part changes, as mentioned in #222. This change is slated for release in 1.22.0. The next change will be slated for 1.23.0, and will limit gcc versions to what is on https://gcc.gnu.org under "Release Series and Status", which is currently 4.9.3 and 5.2.0, although I will also support the previous supported version. In this example that would be 4.8.5. Last, but not least, this change also retires AVR32 support. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Diffstat (limited to 'patches/gcc/4.3.4/160-flatten-switch-stmt-00.patch')
-rw-r--r--patches/gcc/4.3.4/160-flatten-switch-stmt-00.patch81
1 files changed, 0 insertions, 81 deletions
diff --git a/patches/gcc/4.3.4/160-flatten-switch-stmt-00.patch b/patches/gcc/4.3.4/160-flatten-switch-stmt-00.patch
deleted file mode 100644
index 82acfbc..0000000
--- a/patches/gcc/4.3.4/160-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,