Skip to content

R
riscv-gcc-1
Commit 73f01cca by Joseph Myers Committed by Joseph Myers
Options

Always support float128 on ia64 (PR target/77586). 

Bug 77586, and previously
<https://gcc.gnu.org/ml/gcc-bugs/2016-08/msg03233.html>, reports
ia64-elf failing to build because of float128_type_node being NULL,
but being used by the back end for __float128.

The global float128_type_node is only available conditionally, if
target hooks indicate TFmode is not only available as a scalar mode
and of the right format, but also supported in libgcc.  The back-end
support, however, expects the type always to be available for
__float128 even if the libgcc support is missing.

Although a target-specific node could be restored in the case where
libgcc support is missing, it seems better to address the missing
libgcc support.  Thus, this patch enables TFmode soft-fp in libgcc
globally for all ia64 targets.  Support for XFmode in libgcc (that is,
for libgcc2.c XFmode functions, not soft-fp) is also enabled for all
ia64 targets so that ia64 no longer needs to define the
TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P hook.

I've confirmed that ia64-elf builds cc1 with this patch and it passes
-fself-test.  I have not otherwise tested the patch.  It's plausible
that ia64-elf and ia64-freebsd might work as-is, but ia64-vms probably
needs further changes, by someone familiar with VMS shared libraries,
to implement an equivalent of ia64/t-softfp-compat in that case
(avoiding conflicts between __divtf3 from soft-fp and the old alias
for __divxf3).

	PR target/77586
gcc:
	* config/ia64/ia64.c (ia64_libgcc_floating_mode_supported_p)
	(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Remove.
	* config/ia64/elf.h (IA64_NO_LIBGCC_TFMODE): Likewise.
	* config/ia64/freebsd.h (IA64_NO_LIBGCC_TFMODE): Likewise.
	* config/ia64/vms.h (IA64_NO_LIBGCC_XFMODE)
	(IA64_NO_LIBGCC_TFMODE): Likewise.

libgcc:
	* config.host (ia64*-*-elf*, ia64*-*-freebsd*, ia64-hp-*vms*): Use
	soft-fp.

From-SVN: r240955
parent 6e341649
Showing with 19 additions and 45 deletions
gcc/ChangeLog
2016-10-10 Joseph Myers <joseph@codesourcery.com>
PR target/77586
* config/ia64/ia64.c (ia64_libgcc_floating_mode_supported_p)
(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Remove.
* config/ia64/elf.h (IA64_NO_LIBGCC_TFMODE): Likewise.
* config/ia64/freebsd.h (IA64_NO_LIBGCC_TFMODE): Likewise.
* config/ia64/vms.h (IA64_NO_LIBGCC_XFMODE)
(IA64_NO_LIBGCC_TFMODE): Likewise.
2016-10-11 Kugan Vivekanandarajah <kuganv@linaro.org>
* tree-vrp.c (vrp_intersect_ranges_1): Allocate bitmap before
......
gcc/config/ia64/elf.h
......@@ -65,6 +65,4 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
crti.o%s crtbegin.o%s"
#define IA64_NO_LIBGCC_TFMODE
/* End of elf.h */
gcc/config/ia64/freebsd.h
......@@ -50,5 +50,3 @@ along with GCC; see the file COPYING3. If not see
#define TARGET_ELF 1
#define JMP_BUF_SIZE 76
#define IA64_NO_LIBGCC_TFMODE
gcc/config/ia64/ia64.c
......@@ -311,7 +311,6 @@ static rtx ia64_struct_value_rtx (tree, int);
static tree ia64_gimplify_va_arg (tree, tree, gimple_seq *, gimple_seq *);
static bool ia64_scalar_mode_supported_p (machine_mode mode);
static bool ia64_vector_mode_supported_p (machine_mode mode);
static bool ia64_libgcc_floating_mode_supported_p (machine_mode mode);
static bool ia64_legitimate_constant_p (machine_mode, rtx);
static bool ia64_legitimate_address_p (machine_mode, rtx, bool);
static bool ia64_cannot_force_const_mem (machine_mode, rtx);
......@@ -595,10 +594,6 @@ static const struct attribute_spec ia64_attribute_table[] =
#undef TARGET_VECTOR_MODE_SUPPORTED_P
#define TARGET_VECTOR_MODE_SUPPORTED_P ia64_vector_mode_supported_p
#undef TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P
#define TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P \
ia64_libgcc_floating_mode_supported_p
#undef TARGET_LEGITIMATE_CONSTANT_P
#define TARGET_LEGITIMATE_CONSTANT_P ia64_legitimate_constant_p
#undef TARGET_LEGITIMATE_ADDRESS_P
......@@ -11008,36 +11003,6 @@ ia64_vector_mode_supported_p (machine_mode mode)
}
}
/* Implement TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P. */
static bool
ia64_libgcc_floating_mode_supported_p (machine_mode mode)
{
switch (mode)
{
case SFmode:
case DFmode:
return true;
case XFmode:
#ifdef IA64_NO_LIBGCC_XFMODE
return false;
#else
return true;
#endif
case TFmode:
#ifdef IA64_NO_LIBGCC_TFMODE
return false;
#else
return true;
#endif
default:
return false;
}
}
/* Implement the FUNCTION_PROFILER macro. */
void
......
gcc/config/ia64/vms.h
......@@ -154,6 +154,3 @@ STATIC func_ptr __CTOR_LIST__[1] \
/* Default values for _CRTL_VER and _VMS_VER. */
#define VMS_DEFAULT_CRTL_VER 80300000
#define VMS_DEFAULT_VMS_VER 80300000
#define IA64_NO_LIBGCC_XFMODE
#define IA64_NO_LIBGCC_TFMODE
libgcc/ChangeLog
2016-10-10 Joseph Myers <joseph@codesourcery.com>
PR target/77586
* config.host (ia64*-*-elf*, ia64*-*-freebsd*, ia64-hp-*vms*): Use
soft-fp.
2016-10-10 Andreas Tobler <andreast@gcc.gnu.org>
* config.host: Add support for aarch64-*-freebsd*.
......
libgcc/config.host
......@@ -751,11 +751,11 @@ x86_64-*-mingw*)
;;
ia64*-*-elf*)
extra_parts="$extra_parts crtbeginS.o crtendS.o crtfastmath.o"
tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm"
tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm t-softfp-tf ia64/t-softfp t-softfp ia64/t-softfp-compat"
;;
ia64*-*-freebsd*)
extra_parts="$extra_parts crtfastmath.o"
tmake_file="$tmake_file ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm"
tmake_file="$tmake_file ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm t-softfp-tf ia64/t-softfp t-softfp ia64/t-softfp-compat"
;;
ia64*-*-linux*)
# Don't use crtbeginT.o from *-*-linux* default.
......@@ -770,7 +770,7 @@ ia64*-*-hpux*)
tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-hpux t-slibgcc ia64/t-slibgcc-hpux t-slibgcc-hpux"
;;
ia64-hp-*vms*)
tmake_file="$tmake_file ia64/t-ia64 ia64/t-eh-ia64 ia64/t-vms t-slibgcc-vms"
tmake_file="$tmake_file ia64/t-ia64 ia64/t-eh-ia64 ia64/t-vms t-slibgcc-vms t-softfp-tf ia64/t-softfp t-softfp"
extra_parts="$extra_parts crtinitS.o"
md_unwind_header=ia64/vms-unwind.h
;;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment