compiler-builtins: Remove the no-f16-f128 feature#150968
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rust-bors[bot] merged 1 commit intorust-lang:mainfrom Jan 29, 2026
Merged
compiler-builtins: Remove the no-f16-f128 feature#150968rust-bors[bot] merged 1 commit intorust-lang:mainfrom
rust-bors[bot] merged 1 commit intorust-lang:mainfrom
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This option was used to gate `f16` and `f128` when support across
backends and targets was inconsistent. We now have the rustc builtin cfg
`target_has_reliable{f16,f128}` which has taken over this usecase.
Remove no-f16-f128 since it is now unused and redundant.
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…uwer Rollup of 12 pull requests Successful merges: - #150491 (resolve: Mark items under exported ambiguous imports as exported) - #150720 (Do not suggest `derive` if there is already an impl) - #150968 (compiler-builtins: Remove the no-f16-f128 feature) - #151493 ([RFC] rustc_parse: improve the error diagnostic for "missing let in let chain") - #151660 (Bump `std`'s `backtrace`'s `rustc-demangle`) - #151696 (Borrowck: Simplify SCC annotation computation, placeholder rewriting) - #151704 (Implement `set_output_kind` for Emscripten linker) - #151706 (Remove Fuchsia from target OS list in unix.rs for sleep) - #151769 (fix undefined behavior in VecDeque::splice) - #151779 (stdarch subtree update) - #151449 ([rustdoc] Add regression test for #151411) - #151773 (clean up checks for constant promotion of integer division/remainder operations)
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…uwer Rollup of 12 pull requests Successful merges: - rust-lang/rust#150491 (resolve: Mark items under exported ambiguous imports as exported) - rust-lang/rust#150720 (Do not suggest `derive` if there is already an impl) - rust-lang/rust#150968 (compiler-builtins: Remove the no-f16-f128 feature) - rust-lang/rust#151493 ([RFC] rustc_parse: improve the error diagnostic for "missing let in let chain") - rust-lang/rust#151660 (Bump `std`'s `backtrace`'s `rustc-demangle`) - rust-lang/rust#151696 (Borrowck: Simplify SCC annotation computation, placeholder rewriting) - rust-lang/rust#151704 (Implement `set_output_kind` for Emscripten linker) - rust-lang/rust#151706 (Remove Fuchsia from target OS list in unix.rs for sleep) - rust-lang/rust#151769 (fix undefined behavior in VecDeque::splice) - rust-lang/rust#151779 (stdarch subtree update) - rust-lang/rust#151449 ([rustdoc] Add regression test for rust-lang/rust#151411) - rust-lang/rust#151773 (clean up checks for constant promotion of integer division/remainder operations)
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…uwer Rollup of 12 pull requests Successful merges: - rust-lang/rust#150491 (resolve: Mark items under exported ambiguous imports as exported) - rust-lang/rust#150720 (Do not suggest `derive` if there is already an impl) - rust-lang/rust#150968 (compiler-builtins: Remove the no-f16-f128 feature) - rust-lang/rust#151493 ([RFC] rustc_parse: improve the error diagnostic for "missing let in let chain") - rust-lang/rust#151660 (Bump `std`'s `backtrace`'s `rustc-demangle`) - rust-lang/rust#151696 (Borrowck: Simplify SCC annotation computation, placeholder rewriting) - rust-lang/rust#151704 (Implement `set_output_kind` for Emscripten linker) - rust-lang/rust#151706 (Remove Fuchsia from target OS list in unix.rs for sleep) - rust-lang/rust#151769 (fix undefined behavior in VecDeque::splice) - rust-lang/rust#151779 (stdarch subtree update) - rust-lang/rust#151449 ([rustdoc] Add regression test for rust-lang/rust#151411) - rust-lang/rust#151773 (clean up checks for constant promotion of integer division/remainder operations)
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…uwer Rollup of 12 pull requests Successful merges: - rust-lang/rust#150491 (resolve: Mark items under exported ambiguous imports as exported) - rust-lang/rust#150720 (Do not suggest `derive` if there is already an impl) - rust-lang/rust#150968 (compiler-builtins: Remove the no-f16-f128 feature) - rust-lang/rust#151493 ([RFC] rustc_parse: improve the error diagnostic for "missing let in let chain") - rust-lang/rust#151660 (Bump `std`'s `backtrace`'s `rustc-demangle`) - rust-lang/rust#151696 (Borrowck: Simplify SCC annotation computation, placeholder rewriting) - rust-lang/rust#151704 (Implement `set_output_kind` for Emscripten linker) - rust-lang/rust#151706 (Remove Fuchsia from target OS list in unix.rs for sleep) - rust-lang/rust#151769 (fix undefined behavior in VecDeque::splice) - rust-lang/rust#151779 (stdarch subtree update) - rust-lang/rust#151449 ([rustdoc] Add regression test for rust-lang/rust#151411) - rust-lang/rust#151773 (clean up checks for constant promotion of integer division/remainder operations)
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This option was used to gate
f16andf128when support across backends and targets was inconsistent. We now have the rustc builtin cfgtarget_has_reliable{f16,f128}which has taken over this usecase. Remove no-f16-f128 since it is now unused and redundant.r? @Amanieu