librustc: use LLVM intrinsics for several floating point operations.
Achieves at least 5x speed up for some functions! Also, reorganise the delegation code so that the delegated function wrappers have the #[inline(always)] annotation, and reduce the repetition of delegate!(..).
This commit is contained in:
Huon Wilson
parent
93c0888b6c
commit
d9c54f8387
@ -10,12 +10,9 @@
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//! Operations and constants for `f32`
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use cmath;
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use libc::{c_float, c_int};
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use num::strconv;
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use num;
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use option::Option;
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use unstable::intrinsics::floorf32;
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use from_str;
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use to_str;
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@ -24,79 +21,93 @@
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pub use cmath::c_float_targ_consts::*;
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// An inner module is required to get the #[inline(always)] attribute on the
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// functions.
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pub use self::delegated::*;
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macro_rules! delegate(
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(
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fn $name:ident(
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$(
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$arg:ident : $arg_ty:ty
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),*
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) -> $rv:ty = $bound_name:path
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$(
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fn $name:ident(
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$(
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$arg:ident : $arg_ty:ty
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),*
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) -> $rv:ty = $bound_name:path
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),*
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) => (
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pub fn $name($( $arg : $arg_ty ),*) -> $rv {
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unsafe {
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$bound_name($( $arg ),*)
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}
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mod delegated {
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use cmath::c_float_utils;
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use libc::{c_float, c_int};
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use unstable::intrinsics;
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$(
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#[inline(always)]
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pub fn $name($( $arg : $arg_ty ),*) -> $rv {
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unsafe {
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$bound_name($( $arg ),*)
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}
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}
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)*
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}
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)
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)
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delegate!(fn acos(n: c_float) -> c_float = cmath::c_float_utils::acos)
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delegate!(fn asin(n: c_float) -> c_float = cmath::c_float_utils::asin)
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delegate!(fn atan(n: c_float) -> c_float = cmath::c_float_utils::atan)
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delegate!(fn atan2(a: c_float, b: c_float) -> c_float =
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cmath::c_float_utils::atan2)
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delegate!(fn cbrt(n: c_float) -> c_float = cmath::c_float_utils::cbrt)
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delegate!(fn ceil(n: c_float) -> c_float = cmath::c_float_utils::ceil)
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delegate!(fn copysign(x: c_float, y: c_float) -> c_float =
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cmath::c_float_utils::copysign)
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delegate!(fn cos(n: c_float) -> c_float = cmath::c_float_utils::cos)
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delegate!(fn cosh(n: c_float) -> c_float = cmath::c_float_utils::cosh)
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delegate!(fn erf(n: c_float) -> c_float = cmath::c_float_utils::erf)
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delegate!(fn erfc(n: c_float) -> c_float = cmath::c_float_utils::erfc)
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delegate!(fn exp(n: c_float) -> c_float = cmath::c_float_utils::exp)
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delegate!(fn expm1(n: c_float) -> c_float = cmath::c_float_utils::expm1)
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delegate!(fn exp2(n: c_float) -> c_float = cmath::c_float_utils::exp2)
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delegate!(fn abs(n: c_float) -> c_float = cmath::c_float_utils::abs)
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delegate!(fn abs_sub(a: c_float, b: c_float) -> c_float =
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cmath::c_float_utils::abs_sub)
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delegate!(fn mul_add(a: c_float, b: c_float, c: c_float) -> c_float =
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cmath::c_float_utils::mul_add)
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delegate!(fn fmax(a: c_float, b: c_float) -> c_float =
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cmath::c_float_utils::fmax)
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delegate!(fn fmin(a: c_float, b: c_float) -> c_float =
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cmath::c_float_utils::fmin)
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delegate!(fn nextafter(x: c_float, y: c_float) -> c_float =
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cmath::c_float_utils::nextafter)
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delegate!(fn frexp(n: c_float, value: &mut c_int) -> c_float =
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cmath::c_float_utils::frexp)
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delegate!(fn hypot(x: c_float, y: c_float) -> c_float =
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cmath::c_float_utils::hypot)
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delegate!(fn ldexp(x: c_float, n: c_int) -> c_float =
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cmath::c_float_utils::ldexp)
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delegate!(fn lgamma(n: c_float, sign: &mut c_int) -> c_float =
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cmath::c_float_utils::lgamma)
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delegate!(fn ln(n: c_float) -> c_float = cmath::c_float_utils::ln)
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delegate!(fn log_radix(n: c_float) -> c_float =
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cmath::c_float_utils::log_radix)
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delegate!(fn ln1p(n: c_float) -> c_float = cmath::c_float_utils::ln1p)
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delegate!(fn log10(n: c_float) -> c_float = cmath::c_float_utils::log10)
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delegate!(fn log2(n: c_float) -> c_float = cmath::c_float_utils::log2)
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delegate!(fn ilog_radix(n: c_float) -> c_int =
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cmath::c_float_utils::ilog_radix)
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delegate!(fn modf(n: c_float, iptr: &mut c_float) -> c_float =
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cmath::c_float_utils::modf)
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delegate!(fn pow(n: c_float, e: c_float) -> c_float =
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cmath::c_float_utils::pow)
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delegate!(fn round(n: c_float) -> c_float = cmath::c_float_utils::round)
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delegate!(fn ldexp_radix(n: c_float, i: c_int) -> c_float =
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cmath::c_float_utils::ldexp_radix)
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delegate!(fn sin(n: c_float) -> c_float = cmath::c_float_utils::sin)
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delegate!(fn sinh(n: c_float) -> c_float = cmath::c_float_utils::sinh)
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delegate!(fn sqrt(n: c_float) -> c_float = cmath::c_float_utils::sqrt)
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delegate!(fn tan(n: c_float) -> c_float = cmath::c_float_utils::tan)
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delegate!(fn tanh(n: c_float) -> c_float = cmath::c_float_utils::tanh)
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delegate!(fn tgamma(n: c_float) -> c_float = cmath::c_float_utils::tgamma)
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delegate!(fn trunc(n: c_float) -> c_float = cmath::c_float_utils::trunc)
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delegate!(
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// intrinsics
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fn abs(n: f32) -> f32 = intrinsics::fabsf32,
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fn cos(n: f32) -> f32 = intrinsics::cosf32,
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fn exp(n: f32) -> f32 = intrinsics::expf32,
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fn exp2(n: f32) -> f32 = intrinsics::exp2f32,
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fn floor(x: f32) -> f32 = intrinsics::floorf32,
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fn ln(n: f32) -> f32 = intrinsics::logf32,
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fn log10(n: f32) -> f32 = intrinsics::log10f32,
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fn log2(n: f32) -> f32 = intrinsics::log2f32,
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fn mul_add(a: f32, b: f32, c: f32) -> f32 = intrinsics::fmaf32,
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fn pow(n: f32, e: f32) -> f32 = intrinsics::powf32,
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fn powi(n: f32, e: c_int) -> f32 = intrinsics::powif32,
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fn sin(n: f32) -> f32 = intrinsics::sinf32,
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fn sqrt(n: f32) -> f32 = intrinsics::sqrtf32,
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// LLVM 3.3 required to use intrinsics for these four
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fn ceil(n: c_float) -> c_float = c_float_utils::ceil,
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fn trunc(n: c_float) -> c_float = c_float_utils::trunc,
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/*
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fn ceil(n: f32) -> f32 = intrinsics::ceilf32,
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fn trunc(n: f32) -> f32 = intrinsics::truncf32,
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fn rint(n: f32) -> f32 = intrinsics::rintf32,
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fn nearbyint(n: f32) -> f32 = intrinsics::nearbyintf32,
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*/
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// cmath
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fn acos(n: c_float) -> c_float = c_float_utils::acos,
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fn asin(n: c_float) -> c_float = c_float_utils::asin,
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fn atan(n: c_float) -> c_float = c_float_utils::atan,
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fn atan2(a: c_float, b: c_float) -> c_float = c_float_utils::atan2,
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fn cbrt(n: c_float) -> c_float = c_float_utils::cbrt,
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fn copysign(x: c_float, y: c_float) -> c_float = c_float_utils::copysign,
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fn cosh(n: c_float) -> c_float = c_float_utils::cosh,
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fn erf(n: c_float) -> c_float = c_float_utils::erf,
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fn erfc(n: c_float) -> c_float = c_float_utils::erfc,
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fn expm1(n: c_float) -> c_float = c_float_utils::expm1,
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fn abs_sub(a: c_float, b: c_float) -> c_float = c_float_utils::abs_sub,
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fn fmax(a: c_float, b: c_float) -> c_float = c_float_utils::fmax,
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fn fmin(a: c_float, b: c_float) -> c_float = c_float_utils::fmin,
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fn nextafter(x: c_float, y: c_float) -> c_float = c_float_utils::nextafter,
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fn frexp(n: c_float, value: &mut c_int) -> c_float = c_float_utils::frexp,
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fn hypot(x: c_float, y: c_float) -> c_float = c_float_utils::hypot,
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fn ldexp(x: c_float, n: c_int) -> c_float = c_float_utils::ldexp,
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fn lgamma(n: c_float, sign: &mut c_int) -> c_float = c_float_utils::lgamma,
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fn log_radix(n: c_float) -> c_float = c_float_utils::log_radix,
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fn ln1p(n: c_float) -> c_float = c_float_utils::ln1p,
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fn ilog_radix(n: c_float) -> c_int = c_float_utils::ilog_radix,
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fn modf(n: c_float, iptr: &mut c_float) -> c_float = c_float_utils::modf,
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fn round(n: c_float) -> c_float = c_float_utils::round,
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fn ldexp_radix(n: c_float, i: c_int) -> c_float = c_float_utils::ldexp_radix,
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fn sinh(n: c_float) -> c_float = c_float_utils::sinh,
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fn tan(n: c_float) -> c_float = c_float_utils::tan,
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fn tanh(n: c_float) -> c_float = c_float_utils::tanh,
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fn tgamma(n: c_float) -> c_float = c_float_utils::tgamma)
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// These are not defined inside consts:: for consistency with
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// the integer types
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@ -143,9 +154,6 @@ pub fn is_NaN(f: f32) -> bool { f != f }
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#[inline(always)]
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pub fn gt(x: f32, y: f32) -> bool { return x > y; }
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/// Returns `x` rounded down
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#[inline(always)]
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pub fn floor(x: f32) -> f32 { unsafe { floorf32(x) } }
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// FIXME (#1999): replace the predicates below with llvm intrinsics or
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// calls to the libmath macros in the rust runtime for performance.
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@ -10,12 +10,9 @@
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//! Operations and constants for `f64`
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use cmath;
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use libc::{c_double, c_int};
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use num::strconv;
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use num;
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use option::Option;
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use unstable::intrinsics::floorf64;
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use to_str;
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use from_str;
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@ -25,87 +22,98 @@
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pub use cmath::c_double_targ_consts::*;
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pub use cmp::{min, max};
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// An inner module is required to get the #[inline(always)] attribute on the
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// functions.
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pub use self::delegated::*;
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macro_rules! delegate(
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(
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fn $name:ident(
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$(
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$arg:ident : $arg_ty:ty
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),*
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) -> $rv:ty = $bound_name:path
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$(
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fn $name:ident(
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$(
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$arg:ident : $arg_ty:ty
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),*
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) -> $rv:ty = $bound_name:path
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),*
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) => (
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pub fn $name($( $arg : $arg_ty ),*) -> $rv {
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unsafe {
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$bound_name($( $arg ),*)
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}
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mod delegated {
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use cmath::c_double_utils;
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use libc::{c_double, c_int};
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use unstable::intrinsics;
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$(
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#[inline(always)]
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pub fn $name($( $arg : $arg_ty ),*) -> $rv {
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unsafe {
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$bound_name($( $arg ),*)
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}
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}
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)*
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}
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)
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)
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delegate!(fn acos(n: c_double) -> c_double = cmath::c_double_utils::acos)
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delegate!(fn asin(n: c_double) -> c_double = cmath::c_double_utils::asin)
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delegate!(fn atan(n: c_double) -> c_double = cmath::c_double_utils::atan)
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delegate!(fn atan2(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::atan2)
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delegate!(fn cbrt(n: c_double) -> c_double = cmath::c_double_utils::cbrt)
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delegate!(fn ceil(n: c_double) -> c_double = cmath::c_double_utils::ceil)
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delegate!(fn copysign(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::copysign)
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delegate!(fn cos(n: c_double) -> c_double = cmath::c_double_utils::cos)
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delegate!(fn cosh(n: c_double) -> c_double = cmath::c_double_utils::cosh)
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delegate!(fn erf(n: c_double) -> c_double = cmath::c_double_utils::erf)
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delegate!(fn erfc(n: c_double) -> c_double = cmath::c_double_utils::erfc)
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delegate!(fn exp(n: c_double) -> c_double = cmath::c_double_utils::exp)
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delegate!(fn expm1(n: c_double) -> c_double = cmath::c_double_utils::expm1)
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delegate!(fn exp2(n: c_double) -> c_double = cmath::c_double_utils::exp2)
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delegate!(fn abs(n: c_double) -> c_double = cmath::c_double_utils::abs)
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delegate!(fn abs_sub(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::abs_sub)
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delegate!(fn mul_add(a: c_double, b: c_double, c: c_double) -> c_double =
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cmath::c_double_utils::mul_add)
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delegate!(fn fmax(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::fmax)
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delegate!(fn fmin(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::fmin)
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delegate!(fn nextafter(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::nextafter)
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delegate!(fn frexp(n: c_double, value: &mut c_int) -> c_double =
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cmath::c_double_utils::frexp)
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delegate!(fn hypot(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::hypot)
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delegate!(fn ldexp(x: c_double, n: c_int) -> c_double =
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cmath::c_double_utils::ldexp)
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delegate!(fn lgamma(n: c_double, sign: &mut c_int) -> c_double =
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cmath::c_double_utils::lgamma)
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delegate!(fn ln(n: c_double) -> c_double = cmath::c_double_utils::ln)
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delegate!(fn log_radix(n: c_double) -> c_double =
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cmath::c_double_utils::log_radix)
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delegate!(fn ln1p(n: c_double) -> c_double = cmath::c_double_utils::ln1p)
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delegate!(fn log10(n: c_double) -> c_double = cmath::c_double_utils::log10)
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delegate!(fn log2(n: c_double) -> c_double = cmath::c_double_utils::log2)
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delegate!(fn ilog_radix(n: c_double) -> c_int =
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cmath::c_double_utils::ilog_radix)
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delegate!(fn modf(n: c_double, iptr: &mut c_double) -> c_double =
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cmath::c_double_utils::modf)
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delegate!(fn pow(n: c_double, e: c_double) -> c_double =
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cmath::c_double_utils::pow)
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delegate!(fn round(n: c_double) -> c_double = cmath::c_double_utils::round)
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delegate!(fn ldexp_radix(n: c_double, i: c_int) -> c_double =
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cmath::c_double_utils::ldexp_radix)
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delegate!(fn sin(n: c_double) -> c_double = cmath::c_double_utils::sin)
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delegate!(fn sinh(n: c_double) -> c_double = cmath::c_double_utils::sinh)
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delegate!(fn sqrt(n: c_double) -> c_double = cmath::c_double_utils::sqrt)
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delegate!(fn tan(n: c_double) -> c_double = cmath::c_double_utils::tan)
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delegate!(fn tanh(n: c_double) -> c_double = cmath::c_double_utils::tanh)
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delegate!(fn tgamma(n: c_double) -> c_double = cmath::c_double_utils::tgamma)
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delegate!(fn trunc(n: c_double) -> c_double = cmath::c_double_utils::trunc)
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delegate!(fn j0(n: c_double) -> c_double = cmath::c_double_utils::j0)
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delegate!(fn j1(n: c_double) -> c_double = cmath::c_double_utils::j1)
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delegate!(fn jn(i: c_int, n: c_double) -> c_double =
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cmath::c_double_utils::jn)
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delegate!(fn y0(n: c_double) -> c_double = cmath::c_double_utils::y0)
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delegate!(fn y1(n: c_double) -> c_double = cmath::c_double_utils::y1)
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delegate!(fn yn(i: c_int, n: c_double) -> c_double =
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cmath::c_double_utils::yn)
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delegate!(
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// intrinsics
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fn abs(n: f64) -> f64 = intrinsics::fabsf64,
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fn cos(n: f64) -> f64 = intrinsics::cosf64,
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fn exp(n: f64) -> f64 = intrinsics::expf64,
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fn exp2(n: f64) -> f64 = intrinsics::exp2f64,
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fn floor(x: f64) -> f64 = intrinsics::floorf64,
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fn ln(n: f64) -> f64 = intrinsics::logf64,
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fn log10(n: f64) -> f64 = intrinsics::log10f64,
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fn log2(n: f64) -> f64 = intrinsics::log2f64,
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fn mul_add(a: f64, b: f64, c: f64) -> f64 = intrinsics::fmaf64,
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fn pow(n: f64, e: f64) -> f64 = intrinsics::powf64,
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fn powi(n: f64, e: c_int) -> f64 = intrinsics::powif64,
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fn sin(n: f64) -> f64 = intrinsics::sinf64,
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fn sqrt(n: f64) -> f64 = intrinsics::sqrtf64,
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// LLVM 3.3 required to use intrinsics for these four
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fn ceil(n: c_double) -> c_double = c_double_utils::ceil,
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fn trunc(n: c_double) -> c_double = c_double_utils::trunc,
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/*
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fn ceil(n: f64) -> f64 = intrinsics::ceilf64,
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fn trunc(n: f64) -> f64 = intrinsics::truncf64,
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fn rint(n: c_double) -> c_double = intrinsics::rintf64,
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fn nearbyint(n: c_double) -> c_double = intrinsics::nearbyintf64,
|
||||
*/
|
||||
|
||||
// cmath
|
||||
fn acos(n: c_double) -> c_double = c_double_utils::acos,
|
||||
fn asin(n: c_double) -> c_double = c_double_utils::asin,
|
||||
fn atan(n: c_double) -> c_double = c_double_utils::atan,
|
||||
fn atan2(a: c_double, b: c_double) -> c_double = c_double_utils::atan2,
|
||||
fn cbrt(n: c_double) -> c_double = c_double_utils::cbrt,
|
||||
fn copysign(x: c_double, y: c_double) -> c_double = c_double_utils::copysign,
|
||||
fn cosh(n: c_double) -> c_double = c_double_utils::cosh,
|
||||
fn erf(n: c_double) -> c_double = c_double_utils::erf,
|
||||
fn erfc(n: c_double) -> c_double = c_double_utils::erfc,
|
||||
fn expm1(n: c_double) -> c_double = c_double_utils::expm1,
|
||||
fn abs_sub(a: c_double, b: c_double) -> c_double = c_double_utils::abs_sub,
|
||||
fn fmax(a: c_double, b: c_double) -> c_double = c_double_utils::fmax,
|
||||
fn fmin(a: c_double, b: c_double) -> c_double = c_double_utils::fmin,
|
||||
fn nextafter(x: c_double, y: c_double) -> c_double = c_double_utils::nextafter,
|
||||
fn frexp(n: c_double, value: &mut c_int) -> c_double = c_double_utils::frexp,
|
||||
fn hypot(x: c_double, y: c_double) -> c_double = c_double_utils::hypot,
|
||||
fn ldexp(x: c_double, n: c_int) -> c_double = c_double_utils::ldexp,
|
||||
fn lgamma(n: c_double, sign: &mut c_int) -> c_double = c_double_utils::lgamma,
|
||||
fn log_radix(n: c_double) -> c_double = c_double_utils::log_radix,
|
||||
fn ln1p(n: c_double) -> c_double = c_double_utils::ln1p,
|
||||
fn ilog_radix(n: c_double) -> c_int = c_double_utils::ilog_radix,
|
||||
fn modf(n: c_double, iptr: &mut c_double) -> c_double = c_double_utils::modf,
|
||||
fn round(n: c_double) -> c_double = c_double_utils::round,
|
||||
fn ldexp_radix(n: c_double, i: c_int) -> c_double = c_double_utils::ldexp_radix,
|
||||
fn sinh(n: c_double) -> c_double = c_double_utils::sinh,
|
||||
fn tan(n: c_double) -> c_double = c_double_utils::tan,
|
||||
fn tanh(n: c_double) -> c_double = c_double_utils::tanh,
|
||||
fn tgamma(n: c_double) -> c_double = c_double_utils::tgamma,
|
||||
fn j0(n: c_double) -> c_double = c_double_utils::j0,
|
||||
fn j1(n: c_double) -> c_double = c_double_utils::j1,
|
||||
fn jn(i: c_int, n: c_double) -> c_double = c_double_utils::jn,
|
||||
fn y0(n: c_double) -> c_double = c_double_utils::y0,
|
||||
fn y1(n: c_double) -> c_double = c_double_utils::y1,
|
||||
fn yn(i: c_int, n: c_double) -> c_double = c_double_utils::yn)
|
||||
|
||||
// FIXME (#1433): obtain these in a different way
|
||||
|
||||
@ -218,9 +226,6 @@ pub fn is_finite(x: f64) -> bool {
|
||||
return !(is_NaN(x) || is_infinite(x));
|
||||
}
|
||||
|
||||
/// Returns `x` rounded down
|
||||
#[inline(always)]
|
||||
pub fn floor(x: f64) -> f64 { unsafe { floorf64(x) } }
|
||||
|
||||
// FIXME (#1999): add is_normal, is_subnormal, and fpclassify
|
||||
|
||||
|
||||
@ -36,7 +36,7 @@
|
||||
pub use f64::{erf, erfc, exp, expm1, exp2, abs_sub};
|
||||
pub use f64::{mul_add, fmax, fmin, nextafter, frexp, hypot, ldexp};
|
||||
pub use f64::{lgamma, ln, log_radix, ln1p, log10, log2, ilog_radix};
|
||||
pub use f64::{modf, pow, round, sinh, tanh, tgamma, trunc};
|
||||
pub use f64::{modf, pow, powi, round, sinh, tanh, tgamma, trunc};
|
||||
pub use f64::signbit;
|
||||
pub use f64::{j0, j1, jn, y0, y1, yn};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user