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
This commit is contained in:
Joseph Myers
Joseph Myers
parent
6e34164900
commit
73f01cca84
7 changed files with 19 additions and 45 deletions
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@ -1,3 +1,13 @@
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2016-10-10 Joseph Myers <joseph@codesourcery.com>
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PR target/77586
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* config/ia64/ia64.c (ia64_libgcc_floating_mode_supported_p)
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(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Remove.
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* config/ia64/elf.h (IA64_NO_LIBGCC_TFMODE): Likewise.
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* config/ia64/freebsd.h (IA64_NO_LIBGCC_TFMODE): Likewise.
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* config/ia64/vms.h (IA64_NO_LIBGCC_XFMODE)
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(IA64_NO_LIBGCC_TFMODE): Likewise.
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2016-10-11 Kugan Vivekanandarajah <kuganv@linaro.org>
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* tree-vrp.c (vrp_intersect_ranges_1): Allocate bitmap before
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@ -65,6 +65,4 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
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crti.o%s crtbegin.o%s"
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#define IA64_NO_LIBGCC_TFMODE
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/* End of elf.h */
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@ -50,5 +50,3 @@ along with GCC; see the file COPYING3. If not see
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#define TARGET_ELF 1
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#define JMP_BUF_SIZE 76
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#define IA64_NO_LIBGCC_TFMODE
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@ -311,7 +311,6 @@ static rtx ia64_struct_value_rtx (tree, int);
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static tree ia64_gimplify_va_arg (tree, tree, gimple_seq *, gimple_seq *);
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static bool ia64_scalar_mode_supported_p (machine_mode mode);
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static bool ia64_vector_mode_supported_p (machine_mode mode);
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static bool ia64_libgcc_floating_mode_supported_p (machine_mode mode);
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static bool ia64_legitimate_constant_p (machine_mode, rtx);
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static bool ia64_legitimate_address_p (machine_mode, rtx, bool);
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static bool ia64_cannot_force_const_mem (machine_mode, rtx);
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@ -595,10 +594,6 @@ static const struct attribute_spec ia64_attribute_table[] =
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#undef TARGET_VECTOR_MODE_SUPPORTED_P
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#define TARGET_VECTOR_MODE_SUPPORTED_P ia64_vector_mode_supported_p
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#undef TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P
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#define TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P \
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ia64_libgcc_floating_mode_supported_p
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#undef TARGET_LEGITIMATE_CONSTANT_P
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#define TARGET_LEGITIMATE_CONSTANT_P ia64_legitimate_constant_p
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#undef TARGET_LEGITIMATE_ADDRESS_P
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@ -11008,36 +11003,6 @@ ia64_vector_mode_supported_p (machine_mode mode)
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}
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}
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/* Implement TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P. */
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static bool
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ia64_libgcc_floating_mode_supported_p (machine_mode mode)
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{
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switch (mode)
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{
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case SFmode:
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case DFmode:
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return true;
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case XFmode:
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#ifdef IA64_NO_LIBGCC_XFMODE
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return false;
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#else
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return true;
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#endif
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case TFmode:
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#ifdef IA64_NO_LIBGCC_TFMODE
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return false;
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#else
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return true;
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#endif
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default:
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return false;
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}
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}
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/* Implement the FUNCTION_PROFILER macro. */
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void
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@ -154,6 +154,3 @@ STATIC func_ptr __CTOR_LIST__[1] \
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/* Default values for _CRTL_VER and _VMS_VER. */
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#define VMS_DEFAULT_CRTL_VER 80300000
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#define VMS_DEFAULT_VMS_VER 80300000
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#define IA64_NO_LIBGCC_XFMODE
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#define IA64_NO_LIBGCC_TFMODE
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@ -1,3 +1,9 @@
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2016-10-10 Joseph Myers <joseph@codesourcery.com>
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PR target/77586
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* config.host (ia64*-*-elf*, ia64*-*-freebsd*, ia64-hp-*vms*): Use
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soft-fp.
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2016-10-10 Andreas Tobler <andreast@gcc.gnu.org>
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* config.host: Add support for aarch64-*-freebsd*.
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@ -751,11 +751,11 @@ x86_64-*-mingw*)
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;;
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ia64*-*-elf*)
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extra_parts="$extra_parts crtbeginS.o crtendS.o crtfastmath.o"
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tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm"
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tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm t-softfp-tf ia64/t-softfp t-softfp ia64/t-softfp-compat"
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;;
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ia64*-*-freebsd*)
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extra_parts="$extra_parts crtfastmath.o"
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tmake_file="$tmake_file ia64/t-ia64 ia64/t-ia64-elf ia64/t-eh-ia64 t-crtfm"
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tmake_file="$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"
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;;
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ia64*-*-linux*)
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# Don't use crtbeginT.o from *-*-linux* default.
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@ -770,7 +770,7 @@ ia64*-*-hpux*)
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tmake_file="ia64/t-ia64 ia64/t-ia64-elf ia64/t-hpux t-slibgcc ia64/t-slibgcc-hpux t-slibgcc-hpux"
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;;
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ia64-hp-*vms*)
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tmake_file="$tmake_file ia64/t-ia64 ia64/t-eh-ia64 ia64/t-vms t-slibgcc-vms"
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tmake_file="$tmake_file ia64/t-ia64 ia64/t-eh-ia64 ia64/t-vms t-slibgcc-vms t-softfp-tf ia64/t-softfp t-softfp"
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extra_parts="$extra_parts crtinitS.o"
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md_unwind_header=ia64/vms-unwind.h
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;;
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