Alan said he did this, which was a bootstrap and regression test of
all the combinations:
/I built four configurations, powerpc-linux 32-bit only,
powerpc64le-linux 64-bit only, biarch powerpc-linux with 32-bit default,
and biarch powerpc64-linux with 64-bit default/
I also did verify that on the ppc64le build and the biarch ppc64 64-bit
default that the gold linker and split stack were enabled as expected and
ran the Go testsuite for those.
On 10/15/2015 01:40 PM, David Edelsohn wrote:
On Sun, Oct 11, 2015 at 9:07 AM, Alan Modra <amo...@gmail.com> wrote:
On Sat, Oct 10, 2015 at 11:25:38PM +0200, Andreas Schwab wrote:
"Lynn A. Boger" <labo...@linux.vnet.ibm.com> writes:
Index: gcc/config/rs6000/sysv4.h
===================================================================
--- gcc/config/rs6000/sysv4.h (revision 228653)
+++ gcc/config/rs6000/sysv4.h (working copy)
@@ -940,13 +940,15 @@ ncrtn.o%s"
#undef TARGET_ASAN_SHADOW_OFFSET
#define TARGET_ASAN_SHADOW_OFFSET rs6000_asan_shadow_offset
-/* On ppc64 and ppc64le, split stack is only support for
- 64 bit. */
+/* On ppc64 and ppc64le, split stack is only supported for
+ 64 bit targets with a 64 bit compiler. */
#undef TARGET_CAN_SPLIT_STACK_64BIT
+#if defined (__64BIT__) || defined (__powerpc64__) || defined (__ppc64__)
This doesn't make sense. A target header cannot use host defines.
Right. Here's a better fix. A powerpc-linux biarch compiler can
default to either -m32 or -m64 so we need to take that into account,
and notice both -m32 and -m64 on the gccgo command line. It's also
possible to build a -m64 only compiler, so in that case we can define
TARGET_CAN_SPLIT_STACK.
Bootstrapped etc. powerpc64-linux, powerpc-linux and
powerpc64le-linux. OK?
gcc/
* config/rs6000/sysv4.h (TARGET_CAN_SPLIT_STACK_64BIT): Don't define.
* config/rs6000/linux64.h (TARGET_CAN_SPLIT_STACK): Define.
(TARGET_CAN_SPLIT_STACK_64BIT): Define.
gcc/go/
* gospec.c (saw_opt_m32): Rename to..
(is_m64): ..this, initialised by TARGET_CAN_SPLIT_STACK_64BIT.
Update uses.
(lang_specific_driver): Set is_m64 if OPT_m64, clear if OPT_m32.
The rs6000 bits are okay with me, although I never saw a full test for
all configurations from Lynn.
Thanks, David
