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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 |
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| .. | ||
| config | ||
| soft-fp | ||
| ChangeLog | ||
| config.host | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| crtstuff.c | ||
| dfp-bit.c | ||
| dfp-bit.h | ||
| divmod.c | ||
| empty.mk | ||
| emutls.c | ||
| enable-execute-stack-empty.c | ||
| enable-execute-stack-mprotect.c | ||
| find-symver.awk | ||
| fixed-bit.c | ||
| fixed-bit.h | ||
| fixed-obj.mk | ||
| floatunsidf.c | ||
| floatunsisf.c | ||
| floatunsitf.c | ||
| floatunsixf.c | ||
| fp-bit.c | ||
| fp-bit.h | ||
| gbl-ctors.h | ||
| gen-fixed.sh | ||
| generic-morestack-thread.c | ||
| generic-morestack.c | ||
| generic-morestack.h | ||
| gstdint.h | ||
| gthr-posix.h | ||
| gthr-single.h | ||
| gthr.h | ||
| libgcc2.c | ||
| libgcc2.h | ||
| libgcc-std.ver.in | ||
| libgcov-driver-system.c | ||
| libgcov-driver.c | ||
| libgcov-interface.c | ||
| libgcov-merge.c | ||
| libgcov-profiler.c | ||
| libgcov-util.c | ||
| libgcov.h | ||
| Makefile.in | ||
| memcmp.c | ||
| memcpy.c | ||
| memmove.c | ||
| memset.c | ||
| mkheader.sh | ||
| mkmap-flat.awk | ||
| mkmap-symver.awk | ||
| offloadstuff.c | ||
| shared-object.mk | ||
| siditi-object.mk | ||
| static-object.mk | ||
| sync.c | ||
| udivmod.c | ||
| udivmodsi4.c | ||
| unwind-arm-common.inc | ||
| unwind-c.c | ||
| unwind-compat.c | ||
| unwind-compat.h | ||
| unwind-dw2-fde-compat.c | ||
| unwind-dw2-fde-dip.c | ||
| unwind-dw2-fde.c | ||
| unwind-dw2-fde.h | ||
| unwind-dw2.c | ||
| unwind-dw2.h | ||
| unwind-generic.h | ||
| unwind-pe.h | ||
| unwind-seh.c | ||
| unwind-sjlj.c | ||
| unwind.inc | ||
| vtv_end_preinit.c | ||
| vtv_end.c | ||
| vtv_start_preinit.c | ||
| vtv_start.c | ||