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compiler-builtins: Remove the no-f16-f128 feature #150968

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Merged
rust-bors merged 1 commit into from
Jan 29, 2026
+4 −26
Merged

compiler-builtins: Remove the no-f16-f128 feature #150968

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1 change: 0 additions & 1 deletion library/alloc/Cargo.toml
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Expand Up @@ -21,7 +21,6 @@ compiler_builtins = { path = "../compiler-builtins/compiler-builtins", features
[features]
compiler-builtins-mem = ['compiler_builtins/mem']
compiler-builtins-c = ["compiler_builtins/c"]
compiler-builtins-no-f16-f128 = ["compiler_builtins/no-f16-f128"]
# Choose algorithms that are optimized for binary size instead of runtime performance
optimize_for_size = ["core/optimize_for_size"]

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4 changes: 0 additions & 4 deletions library/compiler-builtins/builtins-shim/Cargo.toml
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Expand Up @@ -47,10 +47,6 @@ c = ["dep:cc"]
# the generic versions on all platforms.
no-asm = []

# Workaround for codegen backends which haven't yet implemented `f16` and
# `f128` support. Disabled any intrinsics which use those types.
no-f16-f128 = []

# Flag this library as the unstable compiler-builtins lib
compiler-builtins = []

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1 change: 0 additions & 1 deletion library/compiler-builtins/builtins-test/Cargo.toml
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Expand Up @@ -33,7 +33,6 @@ utest-macros = { git = "https://github.com/japaric/utest" }
default = ["mangled-names"]
c = ["compiler_builtins/c"]
no-asm = ["compiler_builtins/no-asm"]
no-f16-f128 = ["compiler_builtins/no-f16-f128"]
mem = ["compiler_builtins/mem"]
mangled-names = ["compiler_builtins/mangled-names"]
# Skip tests that rely on f128 symbols being available on the system
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4 changes: 0 additions & 4 deletions library/compiler-builtins/ci/run.sh
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Expand Up @@ -36,8 +36,6 @@ else
"${test_builtins[@]}" --features c --release
"${test_builtins[@]}" --features no-asm
"${test_builtins[@]}" --features no-asm --release
"${test_builtins[@]}" --features no-f16-f128
"${test_builtins[@]}" --features no-f16-f128 --release
"${test_builtins[@]}" --benches
"${test_builtins[@]}" --benches --release

Expand All @@ -63,8 +61,6 @@ symcheck+=(-- build-and-check)
"${symcheck[@]}" "$target" -- -p compiler_builtins --features c --release
"${symcheck[@]}" "$target" -- -p compiler_builtins --features no-asm
"${symcheck[@]}" "$target" -- -p compiler_builtins --features no-asm --release
"${symcheck[@]}" "$target" -- -p compiler_builtins --features no-f16-f128
"${symcheck[@]}" "$target" -- -p compiler_builtins --features no-f16-f128 --release

run_intrinsics_test() {
build_args=(--verbose --manifest-path builtins-test-intrinsics/Cargo.toml)
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4 changes: 0 additions & 4 deletions library/compiler-builtins/compiler-builtins/Cargo.toml
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Expand Up @@ -45,10 +45,6 @@ c = ["dep:cc"]
# the generic versions on all platforms.
no-asm = []

# Workaround for codegen backends which haven't yet implemented `f16` and
# `f128` support. Disabled any intrinsics which use those types.
no-f16-f128 = []

# Flag this library as the unstable compiler-builtins lib
compiler-builtins = []

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7 changes: 2 additions & 5 deletions library/compiler-builtins/compiler-builtins/configure.rs
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Expand Up @@ -95,16 +95,13 @@ pub fn configure_aliases(target: &Target) {
* * https://github.com/rust-lang/rustc_codegen_cranelift/blob/c713ffab3c6e28ab4b4dd4e392330f786ea657ad/src/lib.rs#L196-L226
*/

// If the feature is set, disable both of these types.
let no_f16_f128 = target.cargo_features.iter().any(|s| s == "no-f16-f128");

println!("cargo::rustc-check-cfg=cfg(f16_enabled)");
if target.reliable_f16 && !no_f16_f128 {
if target.reliable_f16 {
println!("cargo::rustc-cfg=f16_enabled");
}

println!("cargo::rustc-check-cfg=cfg(f128_enabled)");
if target.reliable_f128 && !no_f16_f128 {
if target.reliable_f128 {
println!("cargo::rustc-cfg=f128_enabled");
}
}
7 changes: 2 additions & 5 deletions library/compiler-builtins/libm/configure.rs
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Expand Up @@ -143,16 +143,13 @@ fn emit_f16_f128_cfg(cfg: &Config) {

/* See the compiler-builtins configure file for info about the meaning of these options */

// If the feature is set, disable both of these types.
let no_f16_f128 = cfg.cargo_features.iter().any(|s| s == "no-f16-f128");

println!("cargo:rustc-check-cfg=cfg(f16_enabled)");
if cfg.reliable_f16 && !no_f16_f128 {
if cfg.reliable_f16 {
println!("cargo:rustc-cfg=f16_enabled");
}

println!("cargo:rustc-check-cfg=cfg(f128_enabled)");
if cfg.reliable_f128 && !no_f16_f128 {
if cfg.reliable_f128 {
println!("cargo:rustc-cfg=f128_enabled");
}
}
1 change: 0 additions & 1 deletion library/std/Cargo.toml
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Expand Up @@ -115,7 +115,6 @@ backtrace-trace-only = []
panic-unwind = ["dep:panic_unwind"]
compiler-builtins-c = ["alloc/compiler-builtins-c"]
compiler-builtins-mem = ["alloc/compiler-builtins-mem"]
compiler-builtins-no-f16-f128 = ["alloc/compiler-builtins-no-f16-f128"]
llvm-libunwind = ["unwind/llvm-libunwind"]
system-llvm-libunwind = ["unwind/system-llvm-libunwind"]

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1 change: 0 additions & 1 deletion library/sysroot/Cargo.toml
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Expand Up @@ -25,7 +25,6 @@ backtrace = ["std/backtrace"]
backtrace-trace-only = ["std/backtrace-trace-only"]
compiler-builtins-c = ["std/compiler-builtins-c"]
compiler-builtins-mem = ["std/compiler-builtins-mem"]
compiler-builtins-no-f16-f128 = ["std/compiler-builtins-no-f16-f128"]
debug_refcell = ["std/debug_refcell"]
llvm-libunwind = ["std/llvm-libunwind"]
system-llvm-libunwind = ["std/system-llvm-libunwind"]
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