[Bug target/118794] The attached c++ openmp offload code fails, because the c sqrt function makes nonlocal gotos..

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118794

--- Comment #12 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Thomas Schwinge <tschwi...@gcc.gnu.org>:

https://gcc.gnu.org/g:fe283dba774be57b705a7a871b000d2894d2e553

commit r15-9470-gfe283dba774be57b705a7a871b000d2894d2e553
Author: Thomas Schwinge <tschwi...@baylibre.com>
Date:   Fri Mar 28 09:20:49 2025 +0100

    GCN, nvptx: Support '-mfake-exceptions', and use it for offloading
compilation [PR118794]

    With '-mfake-exceptions' enabled, the user-visible behavior in presence of
    exception handling constructs changes such that the compile-time
    'sorry, unimplemented: exception handling not supported' is skipped, code
    generation proceeds, and instead, exception handling constructs 'abort' at
    run time.  (..., or don't, if they're in dead code.)

            PR target/118794
            gcc/
            * config/gcn/gcn.opt (-mfake-exceptions): Support.
            * config/nvptx/nvptx.opt (-mfake-exceptions): Likewise.
            * config/gcn/gcn.md (define_expand "exception_receiver"): Use it.
            * config/nvptx/nvptx.md (define_expand "exception_receiver"):
            Likewise.
            * config/gcn/mkoffload.cc (main): Set it.
            * config/nvptx/mkoffload.cc (main): Likewise.
            * config/nvptx/nvptx.cc (nvptx_assemble_integer)
            <in_section == exception_section>: Special handling for
            'SYMBOL_REF's.
            * except.cc (expand_dw2_landing_pad_for_region): Don't generate
            bogus code for (default)
            '#define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM'.
            libgcc/
            * config/gcn/unwind-gcn.c (_Unwind_Resume): New.
            * config/nvptx/unwind-nvptx.c (_Unwind_Resume): Likewise.
            gcc/testsuite/
            * g++.target/gcn/exceptions-bad_cast-2.C: Set
            '-mno-fake-exceptions'.
            * g++.target/gcn/exceptions-pr118794-1.C: Likewise.
            * g++.target/gcn/exceptions-throw-2.C: Likewise.
            * g++.target/nvptx/exceptions-bad_cast-2.C: Likewise.
            * g++.target/nvptx/exceptions-pr118794-1.C: Likewise.
            * g++.target/nvptx/exceptions-throw-2.C: Likewise.
            * g++.target/gcn/exceptions-bad_cast-2_-mfake-exceptions.C: New.
            * g++.target/gcn/exceptions-pr118794-1_-mfake-exceptions.C:
            Likewise.
            * g++.target/gcn/exceptions-throw-2_-mfake-exceptions.C: Likewise.
            * g++.target/nvptx/exceptions-bad_cast-2_-mfake-exceptions.C:
            Likewise.
            * g++.target/nvptx/exceptions-pr118794-1_-mfake-exceptions.C:
            Likewise.
            * g++.target/nvptx/exceptions-throw-2_-mfake-exceptions.C:
            Likewise.
            libgomp/
            *
testsuite/libgomp.c++/target-exceptions-bad_cast-2-offload-sorry-GCN.C:
            Set '-foffload-options=-mno-fake-exceptions'.
            *
testsuite/libgomp.c++/target-exceptions-bad_cast-2-offload-sorry-nvptx.C:
            Likewise.
            *
testsuite/libgomp.c++/target-exceptions-pr118794-1-offload-sorry-GCN.C:
            Likewise.
            *
testsuite/libgomp.c++/target-exceptions-pr118794-1-offload-sorry-nvptx.C:
            Likewise.
            *
testsuite/libgomp.c++/target-exceptions-throw-2-offload-sorry-GCN.C:
            Likewise.
            *
testsuite/libgomp.c++/target-exceptions-throw-2-offload-sorry-nvptx.C:
            Likewise.
            *
testsuite/libgomp.oacc-c++/exceptions-bad_cast-2-offload-sorry-GCN.C:
            Likewise.
            *
testsuite/libgomp.oacc-c++/exceptions-bad_cast-2-offload-sorry-nvptx.C:
            Likewise.
            *
testsuite/libgomp.oacc-c++/exceptions-throw-2-offload-sorry-GCN.C:
            Likewise.
            *
testsuite/libgomp.oacc-c++/exceptions-throw-2-offload-sorry-nvptx.C:
            Likewise.
            * testsuite/libgomp.c++/target-exceptions-bad_cast-2.C: Adjust.
            * testsuite/libgomp.c++/target-exceptions-pr118794-1.C: Likewise.
            * testsuite/libgomp.c++/target-exceptions-throw-2.C: Likewise.
            * testsuite/libgomp.oacc-c++/exceptions-bad_cast-2.C: Likewise.
            * testsuite/libgomp.oacc-c++/exceptions-throw-2.C: Likewise.
            * testsuite/libgomp.c++/target-exceptions-throw-2-O0.C: New.