[beetrees]

It's unused outside of rustc_codegen_llvm/rustc_codegen_gcc, and shouldn't be used in future in rustc_codegen_ssa to help allow backends that don't support immediate aggregate types to use rustc_codegen_ssa in the future.

r? @bjorn3

[rustbot]

rustc_codegen_gcc is developed in its own repository. If possible, consider making this change to rust-lang/rustc_codegen_gcc instead.

cc @antoyo, @GuillaumeGomez

[bjorn3]

@bors r+

[rust-bors]

📌 Commit 24068cd has been tentatively approved by bjorn3

It will be put into the queue for this repository once PR CI succeeds.

[Zalathar]

• Investigating Rollup of 16 pull requests #165945 (comment)

@bors try jobs=test-aarch64-msvc-1

[rust-bors]

💔 Test for b9433eb failed: CI. Failed job:

• try - test-aarch64-msvc-1 (web logs, enhanced plaintext logs)

[rust-log-analyzer]

The job test-aarch64-msvc-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] find_msvc_tools test:false 1.176
[RUSTC-TIMING] cc test:false 1.418
   Compiling compiler_builtins v0.1.160 (C:\a\rust\rust\library\compiler-builtins\compiler-builtins)
[RUSTC-TIMING] build_script_build test:false 0.634
Assertion failed: E <= end() && "Trying to erase past the end.", file C:\a\rust\rust\src\llvm-project\llvm\include\llvm/ADT/TinyPtrVector.h, line 270
[RUSTC-TIMING] core test:false 27.950
error: could not compile `core` (lib)

Caused by:
  process didn't exit successfully: `C:\a\rust\rust\build\bootstrap\debug\rustc 'C:\a\rust\rust\build\bootstrap\debug\rustc' --crate-name core --edition=2024 'library\core\src\lib.rs' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata,link -Z embed-metadata=no -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 --warn=unexpected_cfgs --check-cfg 'cfg(no_fp_fmt_parse)' --check-cfg 'cfg(feature, values(any()))' --check-cfg 'cfg(target_has_reliable_f16)' --check-cfg 'cfg(target_has_reliable_f16_math)' --check-cfg 'cfg(target_has_reliable_f16b)' --check-cfg 'cfg(target_has_reliable_f128)' --check-cfg 'cfg(target_has_reliable_f128_math)' --check-cfg 'cfg(no_io_statics)' -Cembed-bitcode=yes -Zunstable-options -Cforce-frame-pointers=non-leaf -C debug-assertions=on --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("debug_refcell", "optimize_for_size", "panic_immediate_abort"))' -C metadata=be032579fe0883de -C extra-filename=-4b1355948afd9fb6 --out-dir 'C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\aarch64-pc-windows-msvc\dist\build\core/4b1355948afd9fb6\out' --target aarch64-pc-windows-msvc -L 'dependency=C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\dist\build\core/4b1355948afd9fb6\out' -Zannotate-moves '--check-cfg=cfg(feature,values(any()))' -Zunstable-options -Zmacro-backtrace -Csplit-debuginfo=packed -Ctarget-feature=+crt-static -Cprefer-dynamic -Zinline-mir -Zinline-mir-preserve-debug -Zmir_strip_debuginfo=locals-in-tiny-functions -Alinker-messages '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Z binary-dep-depinfo --force-warn=unused_crate_dependencies` (exit code: 0xc000001d, STATUS_ILLEGAL_INSTRUCTION)
warning: build failed, waiting for other jobs to finish...
Assertion failed: E <= end() && "Trying to erase past the end.", file C:\a\rust\rust\src\llvm-project\llvm\include\llvm/ADT/TinyPtrVector.h, line 270
[RUSTC-TIMING] compiler_builtins test:false 8.131
error: could not compile `compiler_builtins` (lib)

Caused by:
  process didn't exit successfully: `C:\a\rust\rust\build\bootstrap\debug\rustc 'C:\a\rust\rust\build\bootstrap\debug\rustc' --crate-name compiler_builtins --edition=2024 'library\compiler-builtins\compiler-builtins\src\lib.rs' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata,link -Z embed-metadata=no -C opt-level=3 -C embed-bitcode=no -C codegen-units=10000 -Cembed-bitcode=yes -Zunstable-options -Cforce-frame-pointers=non-leaf -C debug-assertions=on --cfg 'feature="arch"' --cfg 'feature="c"' --cfg 'feature="compiler-builtins"' --cfg 'feature="default"' --cfg 'feature="unmangled-names"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("arch", "c", "compiler-builtins", "default", "mem", "unmangled-names", "unstable-public-internals"))' -C metadata=844a2a35e6b22282 -C extra-filename=-6ae01e573b57cacb --out-dir 'C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\aarch64-pc-windows-msvc\dist\build\compiler_builtins/6ae01e573b57cacb\out' --target aarch64-pc-windows-msvc -L 'dependency=C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\dist\build\compiler_builtins/6ae01e573b57cacb\out' --extern 'core=C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\aarch64-pc-windows-msvc\dist\build\core/4b1355948afd9fb6\out\libcore-4b1355948afd9fb6.rmeta' -Zannotate-moves '--check-cfg=cfg(feature,values(any()))' -Zunstable-options -Zmacro-backtrace -Csplit-debuginfo=packed -Ctarget-feature=+crt-static -Cprefer-dynamic -Zinline-mir -Zinline-mir-preserve-debug -Zmir_strip_debuginfo=locals-in-tiny-functions -Alinker-messages '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Z binary-dep-depinfo --force-warn=unused_crate_dependencies -L 'native=C:\a\rust\rust\build\aarch64-pc-windows-msvc\stage1-std\aarch64-pc-windows-msvc\dist\build\compiler_builtins/c929816aef3eae97\out' -L 'native=C:\Program Files\Microsoft Visual Studio\18\Enterprise\VC\Tools\MSVC\14.52.37025\atlmfc\lib\arm64' -l static=compiler-rt --cfg intrinsics_enabled --cfg optimizations_enabled --cfg f16_enabled --cfg f128_enabled --cfg mem_unaligned --cfg '__absvdi2="optimized-c"' --cfg '__absvsi2="optimized-c"' --cfg '__absvti2="optimized-c"' --cfg '__addvdi3="optimized-c"' --cfg '__addvsi3="optimized-c"' --cfg '__addvti3="optimized-c"' --cfg '__cmpdi2="optimized-c"' --cfg '__cmpti2="optimized-c"' --cfg '__fe_getround="optimized-c"' --cfg '__fe_raise_inexact="optimized-c"' --cfg '__ffsti2="optimized-c"' --cfg '__int_util="optimized-c"' --cfg '__mulvdi3="optimized-c"' --cfg '__mulvsi3="optimized-c"' --cfg '__mulvti3="optimized-c"' --cfg '__negdf2="optimized-c"' --cfg '__negdi2="optimized-c"' --cfg '__negsf2="optimized-c"' --cfg '__negti2="optimized-c"' --cfg '__negvdi2="optimized-c"' --cfg '__negvsi2="optimized-c"' --cfg '__negvti2="optimized-c"' --cfg '__paritydi2="optimized-c"' --cfg '__paritysi2="optimized-c"' --cfg '__parityti2="optimized-c"' --cfg '__popcountdi2="optimized-c"' --cfg '__popcountsi2="optimized-c"' --cfg '__popcountti2="optimized-c"' --cfg '__subvdi3="optimized-c"' --cfg '__subvsi3="optimized-c"' --cfg '__subvti3="optimized-c"' --cfg '__ucmpdi2="optimized-c"' --cfg '__ucmpti2="optimized-c"' --check-cfg 'cfg(thumb)' --check-cfg 'cfg(thumb1_only)' --check-cfg 'cfg(target_abi_eabihf)' --check-cfg 'cfg(x86_no_sse2)' --check-cfg 'cfg(target_feature, values("vfp2sp", "vfp2"))' --check-cfg 'cfg(assert_no_panic)' --check-cfg 'cfg(intrinsics_enabled)' --check-cfg 'cfg(optimizations_enabled)' --check-cfg 'cfg(f16_enabled)' --check-cfg 'cfg(f128_enabled)' --check-cfg 'cfg(__ashldi3, values("optimized-c"))' --check-cfg 'cfg(__ashlsi3, values("optimized-c"))' --check-cfg 'cfg(__ashrdi3, values("optimized-c"))' --check-cfg 'cfg(__ashrsi3, values("optimized-c"))' --check-cfg 'cfg(__bswapsi2, values("optimized-c"))' --check-cfg 'cfg(__bswapdi2, values("optimized-c"))' --check-cfg 'cfg(__bswapti2, values("optimized-c"))' --check-cfg 'cfg(__divdi3, values("optimized-c"))' --check-cfg 'cfg(__divsi3, values("optimized-c"))' --check-cfg 'cfg(__divmoddi4, values("optimized-c"))' --check-cfg 'cfg(__divmodsi4, values("optimized-c"))' --check-cfg 'cfg(__divmodsi4, values("optimized-c"))' --check-cfg 'cfg(__divmodti4, values("optimized-c"))' --check-cfg 'cfg(__lshrdi3, values("optimized-c"))' --check-cfg 'cfg(__lshrsi3, values("optimized-c"))' --check-cfg 'cfg(__moddi3, values("optimized-c"))' --check-cfg 'cfg(__modsi3, values("optimized-c"))' --check-cfg 'cfg(__muldi3, values("optimized-c"))' --check-cfg 'cfg(__udivdi3, values("optimized-c"))' --check-cfg 'cfg(__udivmoddi4, values("optimized-c"))' --check-cfg 'cfg(__udivmodsi4, values("optimized-c"))' --check-cfg 'cfg(__udivsi3, values("optimized-c"))' --check-cfg 'cfg(__umoddi3, values("optimized-c"))' --check-cfg 'cfg(__umodsi3, values("optimized-c"))' --check-cfg 'cfg(target_feature, values("vis3"))' --check-cfg 'cfg(mem_unaligned)' --check-cfg 'cfg(kernel_user_helpers)'` (exit code: 0xc000001d, STATUS_ILLEGAL_INSTRUCTION)
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Currently active steps:
compile::Assemble { target_compiler: Compiler { stage: 2, host: aarch64-pc-windows-msvc, forced_compiler: false } } at src\bootstrap\src\core\build_steps\test.rs:2032
compile::Rustc { target: aarch64-pc-windows-msvc, build_compiler: Compiler { stage: 1, host: aarch64-pc-windows-msvc, forced_compiler: false }, crates: [] } at src\bootstrap\src\core\build_steps\compile.rs:2343
compile::Std { target: aarch64-pc-windows-msvc, build_compiler: Compiler { stage: 1, host: aarch64-pc-windows-msvc, forced_compiler: false }, crates: [], force_recompile: false, extra_rust_args: [], is_for_mir_opt_tests: false } at src\bootstrap\src\core\build_steps\compile.rs:1064
Build completed unsuccessfully in 0:29:46
make: *** [Makefile:108: ci-msvc-py] Error 1
  local time: Fri Nov 13 18:27:16 PST 2026
  network time: Sat, 14 Nov 2026 02:27:16 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"