On Wed, 22 Feb 2023, Thomas Schwinge wrote:
> Hi!
>
> Richard, you may remember your words from <https://gcc.gnu.org/PR46805>
> "ICE: SIGSEGV in optab_for_tree_code (optabs.c:407) with -O
> -fno-tree-scev-cprop -ftree-vectorize":
>
> > Ideally we'd never use lang_hooks.types.type_for_mode (or _for_size) in the
> > middle-end but had a pure middle-end based implementation.
>
> Is there a canonical PR or other discussion thread for that?
No, not that I'm aware of.
Richard.
> Here's another instance of this issue:
>
> On 2022-12-19T22:23:45+0100, Jan-Benedict Glaw <jbg...@lug-owl.de> wrote:
> > With the recent merges for Modula-2 and Rust, I see a good number of
> > targets failing with --enable-languages=all, mostly due to issues with
> > the Modula-2 driver.
>
> Thanks for reporting.
>
> > Modula-2 related issues
> > [snipped]
>
> > Rust related issues
> > =====================
> >
> > --target=msp430-elfbare
> > ~~~~~~~~~~~~~~~~~~~~~~~~~
> > /var/lib/laminar/run/gcc-msp430-elfbare/24/toolchain-build/./gcc/xgcc
> > -B/var/lib/laminar/run/gcc-msp430-elfbare/24/toolchain-build/./gcc/ -xrust
> > -frust-incomplete-and-experimental-compiler-do-not-use -nostdinc /dev/null
> > -S -o /dev/null -fself-test=../../gcc/gcc/testsuite/selftests
> > <built-in>: internal compiler error: Segmentation fault
> > 0xf2efbf crash_signal
> > ../../gcc/gcc/toplev.cc:314
> > 0x120c8c7 build_function_type(tree_node*, tree_node*, bool)
> > ../../gcc/gcc/tree.cc:7360
> > 0x120cc20 build_function_type_list(tree_node*, ...)
> > ../../gcc/gcc/tree.cc:7442
> > 0x120d16b build_common_builtin_nodes()
> > ../../gcc/gcc/tree.cc:9883
> > 0x8449b4 grs_langhook_init
> > ../../gcc/gcc/rust/rust-lang.cc:132
> > 0x8427b2 lang_dependent_init
> > ../../gcc/gcc/toplev.cc:1815
> > 0x8427b2 do_compile
> > ../../gcc/gcc/toplev.cc:2110
> > Please submit a full bug report, with preprocessed source (by using
> > -freport-bug).
> > Please include the complete backtrace with any bug report.
> > See <https://gcc.gnu.org/bugs/> for instructions.
> > make[1]: *** [../../gcc/gcc/rust/Make-lang.in:275: s-selftest-rust]
> > Error 1
>
> See also <https://github.com/Rust-GCC/gccrs/issues/1713>
> "Test failure on msp430-elfbare target".
>
> I confirm with both upstream GCC master branch and GCC/Rust master
> branch:
>
> $ ../source-gcc/configure --target=msp430-elfbare --enable-languages=rust
> [...]
> $ make all-gcc [...]
> [...]
> [...]/build-gcc/./gcc/xgcc -B[...]/build-gcc/./gcc/ -xc -nostdinc
> /dev/null -S -o /dev/null -fself-test=../../source-gcc/gcc/testsuite/selftests
> -fself-test: 57323 pass(es) in 0.420000 seconds
> echo timestamp > s-selftest-c
> [...]/build-gcc/./gcc/xgcc -B[...]/build-gcc/./gcc/ -xrust
> -frust-incomplete-and-experimental-compiler-do-not-use -nostdinc /dev/null -S
> -o /dev/null -fself-test=../../source-gcc/gcc/testsuite/selftests
> <built-in>: internal compiler error: Segmentation fault
> 0xf51b9f crash_signal
> ../../source-gcc/gcc/toplev.cc:314
> 0x12e6a3a build_function_type(tree_node*, tree_node*, bool)
> ../../source-gcc/gcc/tree.cc:7447
> 0x12e6ee0 build_function_type_list(tree_node*, ...)
> ../../source-gcc/gcc/tree.cc:7529
> 0x12e748e build_common_builtin_nodes()
> ../../source-gcc/gcc/tree.cc:9977
> 0x7661c4 grs_langhook_init
> ../../source-gcc/gcc/rust/rust-lang.cc:128
> 0x762ac9 lang_dependent_init
> ../../source-gcc/gcc/toplev.cc:1815
> 0x762ac9 do_compile
> ../../source-gcc/gcc/toplev.cc:2110
> Please submit a full bug report, with preprocessed source (by using
> -freport-bug).
> Please include the complete backtrace with any bug report.
> See <https://gcc.gnu.org/bugs/> for instructions.
> make[1]: *** [s-selftest-rust] Error 1
> [...]
>
> OK to push the attached
> "Rust: In 'type_for_mode' langhook also consider all 'int_n' modes/types"?
>
>
> Grüße
> Thomas
>
>
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Richard Biener <rguent...@suse.de>
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