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Makefile.in (LIB2_DIVMOD_EXCEPTION_FLAGS): Default to -fexceptions -fnon-call-exceptions if not defined.

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libgcc/
    * Makefile.in (LIB2_DIVMOD_EXCEPTION_FLAGS): Default to
    -fexceptions -fnon-call-exceptions if not defined.
    ($(lib2-divmod-o), $(lib2-divmod-s-o)): Use above.
    * config/arm/t-bpabi (LIB2_DIVMOD_EXCEPTION_FLAGS): Define.

    gcc/testsuite/
    * gcc.target/arm/div64-unwinding.c: New test.

From-SVN: r190483
This commit is contained in:
Julian Brown 2012-08-17 15:06:06 +00:00 committed by Julian Brown
parent 5615a07d0c
commit a508e1a8cb
5 changed files with 48 additions and 2 deletions
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4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2012-08-17 Julian Brown <julian@codesourcery.com>
* gcc.target/arm/div64-unwinding.c: New test.
2012-08-17 Jakub Jelinek <jakub@redhat.com>
* gcc.dg/torture/Wsizeof-pointer-memaccess1.c: New test.

24
gcc/testsuite/gcc.target/arm/div64-unwinding.c Normal file
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@ -0,0 +1,24 @@
/* Performing a 64-bit division should not pull in the unwinder. */
/* { dg-do run } */
/* { dg-options "-O0" } */
#include <stdlib.h>
long long
foo (long long c, long long d)
{
return c/d;
}
long long x = 0;
long long y = 1;
extern int (*_Unwind_RaiseException) (void *) __attribute__((weak));
int main(void)
{
if (&_Unwind_RaiseException != NULL)
abort ();;
return foo (x, y);
}

7
libgcc/ChangeLog
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@ -1,3 +1,10 @@
2012-08-17 Julian Brown <julian@codesourcery.com>
* Makefile.in (LIB2_DIVMOD_EXCEPTION_FLAGS): Default to
-fexceptions -fnon-call-exceptions if not defined.
($(lib2-divmod-o), $(lib2-divmod-s-o)): Use above.
* config/arm/t-bpabi (LIB2_DIVMOD_EXCEPTION_FLAGS): Define.
2012-08-17 Andreas Schwab <schwab@linux-m68k.org>
* config/m68k/linux-atomic.c (__sync_lock_test_and_set_1): Fix

10
libgcc/Makefile.in
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@ -497,18 +497,24 @@ libgcc-s-objects += $(patsubst %,%_s$(objext),$(sifuncs) $(difuncs) $(tifuncs))
endif
endif
ifeq ($(LIB2_DIVMOD_EXCEPTION_FLAGS),)
# Provide default flags for compiling divmod functions, if they haven't been
# set already by a target-specific Makefile fragment.
LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions -fnon-call-exceptions
endif
# Build LIB2_DIVMOD_FUNCS.
lib2-divmod-o = $(patsubst %,%$(objext),$(LIB2_DIVMOD_FUNCS))
$(lib2-divmod-o): %$(objext): $(srcdir)/libgcc2.c
$(gcc_compile) -DL$* -c $< \
-fexceptions -fnon-call-exceptions $(vis_hide)
$(LIB2_DIVMOD_EXCEPTION_FLAGS) $(vis_hide)
libgcc-objects += $(lib2-divmod-o)
ifeq ($(enable_shared),yes)
lib2-divmod-s-o = $(patsubst %,%_s$(objext),$(LIB2_DIVMOD_FUNCS))
$(lib2-divmod-s-o): %_s$(objext): $(srcdir)/libgcc2.c
$(gcc_s_compile) -DL$* -c $< \
-fexceptions -fnon-call-exceptions
$(LIB2_DIVMOD_EXCEPTION_FLAGS)
libgcc-s-objects += $(lib2-divmod-s-o)
endif

5
libgcc/config/arm/t-bpabi
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@ -13,3 +13,8 @@ LIB2ADDEH = $(srcdir)/config/arm/unwind-arm.c \
# Add the BPABI names.
SHLIB_MAPFILES += $(srcdir)/config/arm/libgcc-bpabi.ver
# On ARM, specifying -fnon-call-exceptions will needlessly pull in
# the unwinder in simple programs which use 64-bit division. Omitting
# the option is safe.
LIB2_DIVMOD_EXCEPTION_FLAGS := -fexceptions