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authorYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2009-01-27 21:37:03 (GMT)
committerYann E. MORIN" <yann.morin.1998@anciens.enib.fr>2009-01-27 21:37:03 (GMT)
commit1843a3b45c7064d8641fb49d7fa7f3a8e4c1f02c (patch)
treeee0fef21d238015f3e7633b344c14fd60ab2a70b /patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch
parentaf244eaf459e6ab9e6786ed5fcc69ac17b4dabe7 (diff)
Add the latest gcc-4.3.3 with the forward-ported patchset from gcc-4.3.2.
/trunk/patches/gcc/4.3.3/210-noteGNUstack-00.patch | 47 26 21 0 ++++--- /trunk/patches/gcc/4.3.3/270-missing-execinfo_h.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/260-uclibc-conf-noupstream.patch | 13 9 4 0 +- /trunk/patches/gcc/4.3.3/220-noteGNUstack-01.patch | 97 51 46 0 +++++++------- /trunk/patches/gcc/4.3.3/240-pr25343.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/100-alpha-mieee-default.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/230-pr34571.patch | 23 8 15 0 +-- /trunk/patches/gcc/4.3.3/350-sh-without-headers.patch | 17 10 7 0 +- /trunk/patches/gcc/4.3.3/330-unwind-for-uClibc.patch | 19 12 7 0 ++- /trunk/patches/gcc/4.3.3/190-libstdc++-pic.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/150-sparc64-bsd.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/290-index_macro.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/140-netbsd-symbolic.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/110-trampolinewarn.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/280-c99-complex-ugly-hack.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/300-libmudflap-susv3-legacy.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/170-libiberty-pic.patch | 11 8 3 0 +- /trunk/patches/gcc/4.3.3/250-sh-pr24836.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/120-java-nomulti.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/320-alpha-signal_h.patch | 14 10 4 0 +- /trunk/patches/gcc/4.3.3/180-superh-default-multilib.patch | 13 9 4 0 +- /trunk/patches/gcc/4.3.3/340-make-mno-spe-work-as-expected.patch | 41 23 18 0 +++--- /trunk/patches/gcc/4.3.3/200-pr24170.patch | 23 14 9 0 ++- /trunk/patches/gcc/4.3.3/310-arm-softfloat.patch | 17 11 6 0 +- /trunk/patches/gcc/4.3.3/130-cross-compile.patch | 23 14 9 0 ++- /trunk/config/cc/gcc.in | 7 7 0 0 + 27 files changed, 334 insertions(+), 210 deletions(-)
Diffstat (limited to 'patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch')
-rw-r--r--patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch81
1 files changed, 81 insertions, 0 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
new file mode 100644
index 0000000..82acfbc
--- /dev/null
+++ b/patches/gcc/4.3.3/160-flatten-switch-stmt-00.patch
@@ -0,0 +1,81 @@
+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,