bjoernager/rust
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Use rint instead of roundeven

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Use rint intrinsic instead of roundeven to impement `round_ties_even`. They do the same thing when rounding mode is default, which Rust assumes.
And `rint` has better platform support.

Keeps `roundeven` around in `core::intrinsics`, it's doing no harm there.
This commit is contained in:
Jules Bertholet 2022-11-07 13:10:36 -05:00
parent 03c166d389
commit f8138110bc
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4 changed files with 12 additions and 7 deletions
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compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
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@ -295,6 +295,8 @@ fn codegen_float_intrinsic_call<'tcx>(
sym::ceilf64 => ("ceil", 1, fx.tcx.types.f64),
sym::truncf32 => ("truncf", 1, fx.tcx.types.f32),
sym::truncf64 => ("trunc", 1, fx.tcx.types.f64),
sym::rintf32 => ("rintf", 1, fx.tcx.types.f32),
sym::rintf64 => ("rint", 1, fx.tcx.types.f64),
sym::roundf32 => ("roundf", 1, fx.tcx.types.f32),
sym::roundf64 => ("round", 1, fx.tcx.types.f64),
sym::roundevenf32 => ("roundevenf", 1, fx.tcx.types.f32),