gcc: add some size optimization patches

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 45664
master
Felix Fietkau 10 years ago
parent cfb56b4811
commit 64661de100
  1. 28
      toolchain/gcc/patches/4.8-linaro/020-no-plt-backport.patch
  2. 12
      toolchain/gcc/patches/4.8-linaro/851-libgcc_no_compat.patch
  3. 28
      toolchain/gcc/patches/4.9-linaro/020-no-plt-backport.patch
  4. 12
      toolchain/gcc/patches/4.9-linaro/851-libgcc_no_compat.patch

@ -0,0 +1,28 @@
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -176,6 +176,12 @@ prepare_call_address (tree fndecl, rtx f
&& targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
? force_not_mem (memory_address (FUNCTION_MODE, funexp))
: memory_address (FUNCTION_MODE, funexp));
+ else if (flag_pic && !flag_plt && fndecl
+ && TREE_CODE (fndecl) == FUNCTION_DECL
+ && !targetm.binds_local_p (fndecl))
+ {
+ funexp = force_reg (Pmode, funexp);
+ }
else if (! sibcallp)
{
#ifndef NO_FUNCTION_CSE
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1617,6 +1617,10 @@ fpie
Common Report Var(flag_pie,1) Negative(fPIC)
Generate position-independent code for executables if possible (small mode)
+fplt
+Common Report Var(flag_plt) Init(1)
+Use PLT for PIC calls (-fno-plt: load the address from GOT at call site)
+
fplugin=
Common Joined RejectNegative Var(common_deferred_options) Defer
Specify a plugin to load

@ -0,0 +1,12 @@
--- a/libgcc/config/t-libunwind
+++ b/libgcc/config/t-libunwind
@@ -2,8 +2,7 @@
HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
- $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
# Override the default value from t-slibgcc-elf-ver and mention -lunwind

@ -0,0 +1,28 @@
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -184,6 +184,12 @@ prepare_call_address (tree fndecl, rtx f
&& targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
? force_not_mem (memory_address (FUNCTION_MODE, funexp))
: memory_address (FUNCTION_MODE, funexp));
+ else if (flag_pic && !flag_plt && fndecl
+ && TREE_CODE (fndecl) == FUNCTION_DECL
+ && !targetm.binds_local_p (fndecl))
+ {
+ funexp = force_reg (Pmode, funexp);
+ }
else if (! sibcallp)
{
#ifndef NO_FUNCTION_CSE
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1659,6 +1659,10 @@ fpie
Common Report Var(flag_pie,1) Negative(fPIC)
Generate position-independent code for executables if possible (small mode)
+fplt
+Common Report Var(flag_plt) Init(1)
+Use PLT for PIC calls (-fno-plt: load the address from GOT at call site)
+
fplugin=
Common Joined RejectNegative Var(common_deferred_options) Defer
Specify a plugin to load

@ -0,0 +1,12 @@
--- a/libgcc/config/t-libunwind
+++ b/libgcc/config/t-libunwind
@@ -2,8 +2,7 @@
HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
- $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
# Override the default value from t-slibgcc-elf-ver and mention -lunwind
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