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Change the CheckCtx constructor to take a Name enum

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This prepares to eliminate some reliance on string matching but does not
yet make those changes.
This commit is contained in:
Trevor Gross
2024-11-02 22:35:30 -05:00
parent 6aef9e17c8
commit 2fab4f4580
8 changed files with 40 additions and 50 deletions
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2
library/compiler-builtins/libm/crates/libm-test/benches/random.rs
View File

@@ -50,7 +50,7 @@ where
let name = Op::NAME_STR;
let ulp = libm_test::musl_allowed_ulp(name);
let ctx = CheckCtx::new(ulp, name, CheckBasis::Musl);
let ctx = CheckCtx::new(ulp, Op::NAME, CheckBasis::Musl);
let benchvec: Vec<_> =
random::get_test_cases::<Op::RustArgs>(&ctx).take(BENCH_ITER_ITEMS).collect();

7
library/compiler-builtins/libm/crates/libm-test/src/gen/random.rs
View File

@@ -110,7 +110,10 @@ pub fn get_test_cases<RustArgs>(ctx: &CheckCtx) -> impl Iterator<Item = RustArgs
where
CachedInput: GenerateInput<RustArgs>,
{
let inputs =
if ctx.fn_name == "jn" || ctx.fn_name == "jnf" { &TEST_CASES_JN } else { &TEST_CASES };
let inputs = if ctx.fn_name_str == "jn" || ctx.fn_name_str == "jnf" {
&TEST_CASES_JN
} else {
&TEST_CASES
};
inputs.get_cases()
}

21
library/compiler-builtins/libm/crates/libm-test/src/lib.rs
View File

@@ -17,27 +17,6 @@ pub type TestResult<T = (), E = anyhow::Error> = Result<T, E>;
// List of all files present in libm's source
include!(concat!(env!("OUT_DIR"), "/all_files.rs"));
/// Return the unsuffixed version of a function name; e.g. `abs` and `absf` both return `abs`,
/// `lgamma_r` and `lgammaf_r` both return `lgamma_r`.
pub fn base_name(name: &str) -> &str {
let known_mappings = &[
("erff", "erf"),
("erf", "erf"),
("lgammaf_r", "lgamma_r"),
("modff", "modf"),
("modf", "modf"),
];
match known_mappings.iter().find(|known| known.0 == name) {
Some(found) => found.1,
None => name
.strip_suffix("f")
.or_else(|| name.strip_suffix("f16"))
.or_else(|| name.strip_suffix("f128"))
.unwrap_or(name),
}
}
/// True if `EMULATED` is set and nonempty. Used to determine how many iterations to run.
pub const fn emulated() -> bool {
match option_env!("EMULATED") {

32
library/compiler-builtins/libm/crates/libm-test/src/precision.rs
View File

@@ -111,25 +111,25 @@ impl MaybeOverride<(f32,)> for SpecialCase {
ctx: &CheckCtx,
) -> Option<TestResult> {
if ctx.basis == CheckBasis::Musl {
if ctx.fn_name == "expm1f" && input.0 > 80.0 && actual.is_infinite() {
if ctx.fn_name_str == "expm1f" && input.0 > 80.0 && actual.is_infinite() {
// we return infinity but the number is representable
return XFAIL;
}
if ctx.fn_name == "sinhf" && input.0.abs() > 80.0 && actual.is_nan() {
if ctx.fn_name_str == "sinhf" && input.0.abs() > 80.0 && actual.is_nan() {
// we return some NaN that should be real values or infinite
// doesn't seem to happen on x86
return XFAIL;
}
}
if ctx.fn_name == "acoshf" && input.0 < -1.0 {
if ctx.fn_name_str == "acoshf" && input.0 < -1.0 {
// acoshf is undefined for x <= 1.0, but we return a random result at lower
// values.
return XFAIL;
}
if ctx.fn_name == "lgammaf" || ctx.fn_name == "lgammaf_r" && input.0 < 0.0 {
if ctx.fn_name_str == "lgammaf" || ctx.fn_name_str == "lgammaf_r" && input.0 < 0.0 {
// loggamma should not be defined for x < 0, yet we both return results
return XFAIL;
}
@@ -146,7 +146,7 @@ impl MaybeOverride<(f32,)> for SpecialCase {
// On MPFR for lgammaf_r, we set -1 as the integer result for negative infinity but MPFR
// sets +1
if ctx.basis == CheckBasis::Mpfr
&& ctx.fn_name == "lgammaf_r"
&& ctx.fn_name_str == "lgammaf_r"
&& input.0 == f32::NEG_INFINITY
&& actual.abs() == expected.abs()
{
@@ -166,13 +166,13 @@ impl MaybeOverride<(f64,)> for SpecialCase {
ctx: &CheckCtx,
) -> Option<TestResult> {
if ctx.basis == CheckBasis::Musl {
if cfg!(target_arch = "x86") && ctx.fn_name == "acosh" && input.0 < 1.0 {
if cfg!(target_arch = "x86") && ctx.fn_name_str == "acosh" && input.0 < 1.0 {
// The function is undefined, both implementations return random results
return SKIP;
}
if cfg!(x86_no_sse)
&& ctx.fn_name == "ceil"
&& ctx.fn_name_str == "ceil"
&& input.0 < 0.0
&& input.0 > -1.0
&& expected == F::ZERO
@@ -183,13 +183,13 @@ impl MaybeOverride<(f64,)> for SpecialCase {
}
}
if ctx.fn_name == "acosh" && input.0 < 1.0 {
if ctx.fn_name_str == "acosh" && input.0 < 1.0 {
// The function is undefined for the inputs, musl and our libm both return
// random results.
return XFAIL;
}
if ctx.fn_name == "lgamma" || ctx.fn_name == "lgamma_r" && input.0 < 0.0 {
if ctx.fn_name_str == "lgamma" || ctx.fn_name_str == "lgamma_r" && input.0 < 0.0 {
// loggamma should not be defined for x < 0, yet we both return results
return XFAIL;
}
@@ -206,7 +206,7 @@ impl MaybeOverride<(f64,)> for SpecialCase {
// On MPFR for lgamma_r, we set -1 as the integer result for negative infinity but MPFR
// sets +1
if ctx.basis == CheckBasis::Mpfr
&& ctx.fn_name == "lgamma_r"
&& ctx.fn_name_str == "lgamma_r"
&& input.0 == f64::NEG_INFINITY
&& actual.abs() == expected.abs()
{
@@ -219,7 +219,7 @@ impl MaybeOverride<(f64,)> for SpecialCase {
/// Check NaN bits if the function requires it
fn maybe_check_nan_bits<F: Float>(actual: F, expected: F, ctx: &CheckCtx) -> Option<TestResult> {
if !(ctx.base_name == "fabs" || ctx.base_name == "copysign") {
if !(ctx.base_name_str == "fabs" || ctx.base_name_str == "copysign") {
return None;
}
@@ -277,7 +277,7 @@ fn maybe_skip_binop_nan<F1: Float, F2: Float>(
) -> Option<TestResult> {
match ctx.basis {
CheckBasis::Musl => {
if (ctx.base_name == "fmax" || ctx.base_name == "fmin")
if (ctx.base_name_str == "fmax" || ctx.base_name_str == "fmin")
&& (input.0.is_nan() || input.1.is_nan())
&& expected.is_nan()
{
@@ -287,7 +287,7 @@ fn maybe_skip_binop_nan<F1: Float, F2: Float>(
}
}
CheckBasis::Mpfr => {
if ctx.base_name == "copysign" && input.1.is_nan() {
if ctx.base_name_str == "copysign" && input.1.is_nan() {
SKIP
} else {
None
@@ -308,7 +308,7 @@ impl MaybeOverride<(i32, f32)> for SpecialCase {
CheckBasis::Musl => bessel_prec_dropoff(input, ulp, ctx),
CheckBasis::Mpfr => {
// We return +0.0, MPFR returns -0.0
if ctx.fn_name == "jnf"
if ctx.fn_name_str == "jnf"
&& input.1 == f32::NEG_INFINITY
&& actual == F::ZERO
&& expected == F::ZERO
@@ -333,7 +333,7 @@ impl MaybeOverride<(i32, f64)> for SpecialCase {
CheckBasis::Musl => bessel_prec_dropoff(input, ulp, ctx),
CheckBasis::Mpfr => {
// We return +0.0, MPFR returns -0.0
if ctx.fn_name == "jn"
if ctx.fn_name_str == "jn"
&& input.1 == f64::NEG_INFINITY
&& actual == F::ZERO
&& expected == F::ZERO
@@ -353,7 +353,7 @@ fn bessel_prec_dropoff<F: Float>(
ulp: &mut u32,
ctx: &CheckCtx,
) -> Option<TestResult> {
if ctx.base_name == "jn" {
if ctx.base_name_str == "jn" {
if input.0 > 4000 {
return XFAIL;
} else if input.0 > 2000 {

20
library/compiler-builtins/libm/crates/libm-test/src/test_traits.rs
View File

@@ -11,25 +11,33 @@ use std::fmt;
use anyhow::{Context, bail, ensure};
use crate::{Float, Int, MaybeOverride, SpecialCase, TestResult};
use crate::{BaseName, Float, Int, MaybeOverride, Name, SpecialCase, TestResult};
/// Context passed to [`CheckOutput`].
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct CheckCtx {
/// Allowed ULP deviation
pub ulp: u32,
pub fn_name: Name,
pub base_name: BaseName,
/// Function name.
pub fn_name: &'static str,
pub fn_name_str: &'static str,
/// Return the unsuffixed version of the function name.
pub base_name: &'static str,
pub base_name_str: &'static str,
/// Source of truth for tests.
pub basis: CheckBasis,
}
impl CheckCtx {
pub fn new(ulp: u32, fname: &'static str, basis: CheckBasis) -> Self {
let base_name = crate::base_name(fname);
Self { ulp, fn_name: fname, base_name, basis }
pub fn new(ulp: u32, fn_name: Name, basis: CheckBasis) -> Self {
Self {
ulp,
fn_name,
fn_name_str: fn_name.as_str(),
base_name: fn_name.base_name(),
base_name_str: fn_name.base_name().as_str(),
basis,
}
}
}

2
library/compiler-builtins/libm/crates/libm-test/tests/compare_built_musl.rs
View File

@@ -36,7 +36,7 @@ where
{
let name = Op::NAME_STR;
let ulp = musl_allowed_ulp(name);
let ctx = CheckCtx::new(ulp, name, CheckBasis::Musl);
let ctx = CheckCtx::new(ulp, Op::NAME, CheckBasis::Musl);
let cases = random::get_test_cases::<Op::RustArgs>(&ctx);
for input in cases {

2
library/compiler-builtins/libm/crates/libm-test/tests/multiprecision.rs
View File

@@ -33,7 +33,7 @@ where
let ulp = multiprec_allowed_ulp(name);
let mut mp_vals = Op::new_mp();
let ctx = CheckCtx::new(ulp, name, CheckBasis::Mpfr);
let ctx = CheckCtx::new(ulp, Op::NAME, CheckBasis::Mpfr);
let cases = random::get_test_cases::<Op::RustArgs>(&ctx);
for input in cases {