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Sync from rust 3c9faa0d03

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bjorn3 2026-02-17 10:47:17 +00:00
commit cef9cfee90
3 changed files with 138 additions and 6 deletions
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5
example/mini_core.rs
View file

@ -621,11 +621,6 @@ impl<T: ?Sized> Deref for Box<T> {
}
}
#[lang = "exchange_malloc"]
unsafe fn allocate(size: usize, _align: usize) -> *mut u8 {
unsafe { libc::malloc(size) }
}
#[lang = "drop"]
pub trait Drop {
fn drop(&mut self);

133
patches/0029-sysroot_tests-disable-f16-math.patch Normal file
View file

@ -0,0 +1,133 @@
From 285d5716fcfa6d43a3516d899b73bc85da322c25 Mon Sep 17 00:00:00 2001
From: xonx <119700621+xonx4l@users.noreply.github.com>
Date: Sun, 15 Feb 2026 14:06:49 +0000
Subject: [PATCH] Disable f16 math tests for cranelift
---
coretests/tests/floats/mod.rs | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/coretests/tests/floats/mod.rs b/coretests/tests/floats/mod.rs
index c61961f8584..d7b4fa20322 100644
--- a/coretests/tests/floats/mod.rs
+++ b/coretests/tests/floats/mod.rs
@@ -1534,7 +1534,7 @@ fn s_nan() -> Float {
name: powf,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1557,7 +1557,7 @@ fn s_nan() -> Float {
name: exp,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1578,7 +1578,7 @@ fn s_nan() -> Float {
name: exp2,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1598,7 +1598,7 @@ fn s_nan() -> Float {
name: ln,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1620,7 +1620,7 @@ fn s_nan() -> Float {
name: log,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1645,7 +1645,7 @@ fn s_nan() -> Float {
name: log2,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1668,7 +1668,7 @@ fn s_nan() -> Float {
name: log10,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1692,7 +1692,7 @@ fn s_nan() -> Float {
name: asinh,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1725,7 +1725,7 @@ fn s_nan() -> Float {
name: acosh,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1753,7 +1753,7 @@ fn s_nan() -> Float {
name: atanh,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1779,7 +1779,7 @@ fn s_nan() -> Float {
name: gamma,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -1814,7 +1814,7 @@ fn s_nan() -> Float {
name: ln_gamma,
attrs: {
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
@@ -2027,7 +2027,7 @@ fn s_nan() -> Float {
attrs: {
// FIXME(f16_f128): add math tests when available
const: #[cfg(false)],
- f16: #[cfg(all(not(miri), target_has_reliable_f16_math))],
+ f16: #[cfg(false)], // FIXME(rust-lang/rustc_codegen_cranelift#1622)
f128: #[cfg(all(not(miri), target_has_reliable_f128_math))],
},
test<Float> {
--
2.50.1

6
src/lib.rs
View file

@ -180,6 +180,10 @@ impl CodegenBackend for CraneliftCodegenBackend {
&& sess.target.env == Env::Gnu
&& sess.target.abi != Abi::Llvm);
// FIXME(f128): f128 math operations need f128 math symbols, which currently aren't always
// filled in by compiler-builtins. The only libc that provides these currently is glibc.
let has_reliable_f128_math = has_reliable_f16_f128 && sess.target.env == Env::Gnu;
TargetConfig {
target_features,
unstable_target_features,
@ -188,7 +192,7 @@ impl CodegenBackend for CraneliftCodegenBackend {
has_reliable_f16: has_reliable_f16_f128,
has_reliable_f16_math: has_reliable_f16_f128,
has_reliable_f128: has_reliable_f16_f128,
has_reliable_f128_math: has_reliable_f16_f128,
has_reliable_f128_math,
}
}