gcc: add some size optimization patches

Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 45664
10 years ago · 64661de100
parent cfb56b4811
commit 64661de100
4 changed files with 80 additions and 0 deletions
--- a/toolchain/gcc/patches/4.8-linaro/020-no-plt-backport.patch
+++ b/toolchain/gcc/patches/4.8-linaro/020-no-plt-backport.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
--- a/toolchain/gcc/patches/4.8-linaro/851-libgcc_no_compat.patch
+++ b/toolchain/gcc/patches/4.8-linaro/851-libgcc_no_compat.patch
@ -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
--- a/toolchain/gcc/patches/4.9-linaro/020-no-plt-backport.patch
+++ b/toolchain/gcc/patches/4.9-linaro/020-no-plt-backport.patch
@ -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
--- a/toolchain/gcc/patches/4.9-linaro/851-libgcc_no_compat.patch
+++ b/toolchain/gcc/patches/4.9-linaro/851-libgcc_no_compat.patch
@ -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