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Reenable the use of the force-soft-floats feature #810

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Reenable the use of the force-soft-floats feature #810

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12 changes: 8 additions & 4 deletions compiler-builtins/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -95,15 +95,19 @@ fn configure_libm(target: &Target) {
println!("cargo:rustc-check-cfg=cfg(intrinsics_enabled)");
println!("cargo:rustc-check-cfg=cfg(arch_enabled)");
println!("cargo:rustc-check-cfg=cfg(optimizations_enabled)");
println!("cargo:rustc-check-cfg=cfg(feature, values(\"unstable-public-internals\"))");
println!("cargo:rustc-check-cfg=cfg(feature, values(\"unstable-public-internals\", \"force-soft-floats\"))");

// Always use intrinsics
println!("cargo:rustc-cfg=intrinsics_enabled");

// Codegen backends (e.g. rustc_codegen_gcc) that implement intrinsics like simd_fsqrt by
// calling sqrt on every element of the vector ends up with an infinite recursion without this
// feature because sqrt would call simd_fsqrt, which in turn calls sqrt on those codegen
// backends.
println!("cargo:rustc-cfg=feature=\"force-soft-floats\"");

// The arch module may contain assembly.
if cfg!(feature = "no-asm") {
println!("cargo:rustc-cfg=feature=\"force-soft-floats\"");
} else {
if !cfg!(feature = "no-asm") {
println!("cargo:rustc-cfg=arch_enabled");
}

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