configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012]

Now that we require at least GCC 4.8, we don't need this als workaround
for 4.6 and 4.7 anymore.
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NThomas Huth <thuth@redhat.com>

Makefile.target

@@ -158,9 +158,6 @@ GENERATED_FILES += hmp-commands.h hmp-commands-info.h
 
 endif # CONFIG_SOFTMMU
 
-# Workaround for http://gcc.gnu.org/PR55489, see configure.
-%/translate.o: QEMU_CFLAGS += $(TRANSLATE_OPT_CFLAGS)
-
 dummy := $(call unnest-vars,,obj-y)
 all-obj-y := $(obj-y)
 

configure

@@ -1936,21 +1936,7 @@ else
   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
 fi
 
-# Workaround for http://gcc.gnu.org/PR55489.  Happens with -fPIE/-fPIC and
-# large functions that use global variables.  The bug is in all releases of
-# GCC, but it became particularly acute in 4.6.x and 4.7.x.  It is fixed in
-# 4.7.3 and 4.8.0.  We should be able to delete this at the end of 2013.
-cat > $TMPC << EOF
-#if __GNUC__ == 4 && (__GNUC_MINOR__ == 6 || (__GNUC_MINOR__ == 7 && __GNUC_PATCHLEVEL__ <= 2))
-int main(void) { return 0; }
-#else
-#error No bug in this compiler.
-#endif
-EOF
-if compile_prog "-Werror -fno-gcse" "" ; then
-  TRANSLATE_OPT_CFLAGS=-fno-gcse
-fi
-
+# Static linking is not possible with modules or PIE
 if test "$static" = "yes" ; then
   if test "$modules" = "yes" ; then
     error_exit "static and modules are mutually incompatible"
@@ -6983,7 +6969,6 @@ echo "LIBS_QGA+=$libs_qga" >> $config_host_mak
 echo "TASN1_LIBS=$tasn1_libs" >> $config_host_mak
 echo "TASN1_CFLAGS=$tasn1_cflags" >> $config_host_mak
 echo "POD2MAN=$POD2MAN" >> $config_host_mak
-echo "TRANSLATE_OPT_CFLAGS=$TRANSLATE_OPT_CFLAGS" >> $config_host_mak
 if test "$gcov" = "yes" ; then
   echo "CONFIG_GCOV=y" >> $config_host_mak
   echo "GCOV=$gcov_tool" >> $config_host_mak