[oe-commits] org.oe.dev gcc 4.2.1: add missing uclibc locale patch and a patch to reduce binary size with -Os
koen commit
openembedded-commits at lists.openembedded.org
Wed Jul 25 17:14:43 UTC 2007
gcc 4.2.1: add missing uclibc locale patch and a patch to reduce binary size with -Os
Author: koen at openembedded.org
Branch: org.openembedded.dev
Revision: 345da0bebae87fcb024afb4862c1e28ca15fa372
ViewMTN: http://monotone.openembedded.org/revision.psp?id=345da0bebae87fcb024afb4862c1e28ca15fa372
Files:
1
packages/gcc/gcc-4.2.1/904-flatten-switch-stmt-00.patch
packages/gcc/gcc-4.2.1/200-uclibc-locale.patch
packages/gcc/gcc_4.2.1.bb
Diffs:
#
# mt diff -rf10a344ab11f6cb949663521534e53f57d1aadf7 -r345da0bebae87fcb024afb4862c1e28ca15fa372
#
#
#
# add_file "packages/gcc/gcc-4.2.1/904-flatten-switch-stmt-00.patch"
# content [458b974137747252d061fa68a4f9f8ab42b287b3]
#
# patch "packages/gcc/gcc-4.2.1/200-uclibc-locale.patch"
# from [8e6037b6e0618f8cc3e60113d45ab7ea2e8eccd6]
# to [28c039b24a03a717740c6985e40b5ea01e869378]
#
# patch "packages/gcc/gcc_4.2.1.bb"
# from [2b150f642b32b1df6fc4941f7ff18dd8e8794a23]
# to [bafb5bf9dabe0cd6e870dcebb72d25a26d2ff890]
#
============================================================
--- packages/gcc/gcc-4.2.1/904-flatten-switch-stmt-00.patch 458b974137747252d061fa68a4f9f8ab42b287b3
+++ packages/gcc/gcc-4.2.1/904-flatten-switch-stmt-00.patch 458b974137747252d061fa68a4f9f8ab42b287b3
@@ -0,0 +1,153 @@
+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"
+
+Index: gcc-4.2.0/gcc/stmt.c
+===================================================================
+--- gcc-4.2.0.orig/gcc/stmt.c (revision 123843)
++++ gcc-4.2.0/gcc/stmt.c (working copy)
+@@ -2517,7 +2517,11 @@ 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);
+ }
+@@ -3075,6 +3079,7 @@ 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,
+
+
+Content-Type: text/x-csrc; charset=us-ascii
+Content-Disposition: attachment; filename="switch.c"
+
+int
+commutative_tree_code (int code)
+{
+#define CASE(val, ret) case val:/* __asm__("# val="#val ",ret="#ret);*/ return ret;
+#ifndef CHAIN
+ switch (code)
+ {
+# if 1
+ CASE(1,3)
+ CASE(3,2)
+ CASE(5,8)
+ CASE(7,1)
+ CASE(33,4)
+ CASE(44,9)
+ CASE(55,10)
+ CASE(66,-1)
+ CASE(77,99)
+ CASE(666,0)
+# else
+ case 1:
+ return 3;
+ case 3:
+ return 2;
+ case 5:
+ return 8;
+ case 7:
+ return 1;
+ case 33:
+ return 4;
+ case 44:
+ return 9;
+ case 55:
+ return 10;
+ case 66:
+ return -1;
+ case 77:
+ return 99;
+ case 666:
+ return 0;
+# endif
+ default:
+ break;
+ }
+ return 4711;
+
+#else
+ if (code == 1)
+ return 3;
+ else if (code == 3)
+ return 2;
+ else if (code == 5)
+ return 8;
+ else if (code == 7)
+ return 1;
+ else if (code == 33)
+ return 4;
+ else if (code == 44)
+ return 9;
+ else if (code == 55)
+ return 10;
+ else if (code == 66)
+ return -1;
+ else if (code == 77)
+ return 99;
+ else if (code == 666)
+ return 0;
+ else
+ return 4711;
+#endif
+}
+
+
+--AhhlLboLdkugWU4S--
+
============================================================
--- packages/gcc/gcc-4.2.1/200-uclibc-locale.patch 8e6037b6e0618f8cc3e60113d45ab7ea2e8eccd6
+++ packages/gcc/gcc-4.2.1/200-uclibc-locale.patch 28c039b24a03a717740c6985e40b5ea01e869378
@@ -1,14 +1,14 @@
--- gcc/libstdc++-v3/acinclude.m4
+++ gcc/libstdc++-v3/acinclude.m4
@@ -1369,7 +1369,7 @@
- AC_MSG_CHECKING([for C locale to use])
+ AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
[use MODEL for target locale package],
- [permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
+ [permit generic|gnu|ieee_1003.1-2001|uclibc|yes|no|auto])
-
- # If they didn't use this option switch, or if they specified --enable
- # with no specific model, we'll have to look for one. If they
+
+ # Deal with gettext issues. Default to not using it (=no) until we detect
+ # support for it later. Let the user turn it off via --e/d, but let that
@@ -1385,6 +1385,9 @@
# Default to "generic".
if test $enable_clocale_flag = auto; then
============================================================
--- packages/gcc/gcc_4.2.1.bb 2b150f642b32b1df6fc4941f7ff18dd8e8794a23
+++ packages/gcc/gcc_4.2.1.bb bafb5bf9dabe0cd6e870dcebb72d25a26d2ff890
@@ -10,7 +10,7 @@ SRC_URI = "ftp://ftp.gnu.org/pub/gnu/gcc
SRC_URI = "ftp://ftp.gnu.org/pub/gnu/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
file://100-uclibc-conf.patch;patch=1 \
-# file://200-uclibc-locale.patch;patch=1 \
+ file://200-uclibc-locale.patch;patch=1 \
file://300-libstdc++-pic.patch;patch=1 \
file://301-missing-execinfo_h.patch;patch=1 \
file://302-c99-snprintf.patch;patch=1 \
@@ -19,6 +19,7 @@ SRC_URI = "ftp://ftp.gnu.org/pub/gnu/gcc
file://602-sdk-libstdc++-includes.patch;patch=1 \
file://740-sh-pr24836.patch;patch=1 \
file://800-arm-bigendian.patch;patch=1 \
+ file://904-flatten-switch-stmt-00.patch;patch=1 \
file://arm-nolibfloat.patch;patch=1 \
file://arm-softfloat.patch;patch=1 \
file://gcc41-configure.in.patch;patch=1 \
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