In addition to the previous patch to aid in transitioning the PowerPC long
double format to IEEE 128-bit, I have some additional patches that are needed.
The previous patch is:
https://gcc.gnu.org/ml/gcc-patches/2018-06/msg00634.html
This patch turns off setting the .gnu_attributes when building the libgcc
helper functions. I ran into some linker warnings as I built some multilib
toolchains, and this turns off those warnings.
I have done separate bootstraps on a little endian power8 system with the long
double type set to IBM extended and IEEE 128-bit extended. There were no
regressions in using this patch. Can I check it in, and eventually back port
it to GCC 8.2 with the other long double transition patches?
2018-06-11 Michael Meissner <meiss...@linux.ibm.com>
* config/rs6000/t-float128 (FP128_CFLAGS_SW): Compile float128
support modules with -mno-gnu-attribute.
* config/rs6000/t-float128-hw (FP128_CFLAGS_HW): Likewise.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
Index: libgcc/config/rs6000/t-float128
===================================================================
--- libgcc/config/rs6000/t-float128 (revision 261338)
+++ libgcc/config/rs6000/t-float128 (working copy)
@@ -59,7 +59,7 @@ fp128_includes = $(srcdir)/soft-fp/doub
# Build the emulator without ISA 3.0 hardware support.
FP128_CFLAGS_SW = -Wno-type-limits -mvsx -mfloat128 \
- -mno-float128-hardware \
+ -mno-float128-hardware -mno-gnu-attribute \
-I$(srcdir)/soft-fp \
-I$(srcdir)/config/rs6000 \
$(FLOAT128_HW_INSNS)
Index: libgcc/config/rs6000/t-float128-hw
===================================================================
--- libgcc/config/rs6000/t-float128-hw (revision 261338)
+++ libgcc/config/rs6000/t-float128-hw (working copy)
@@ -25,7 +25,7 @@ fp128_sed_hw = -hw
# Build the hardware support functions with appropriate hardware support
FP128_CFLAGS_HW = -Wno-type-limits -mvsx -mfloat128 \
-mpower8-vector -mpower9-vector \
- -mfloat128-hardware \
+ -mfloat128-hardware -mno-gnu-attribute \
-I$(srcdir)/soft-fp \
-I$(srcdir)/config/rs6000 \
$(FLOAT128_HW_INSNS)
