Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/ui/simd/libm_no_std_cant_float.rs b/tests/ui/simd/libm_no_std_cant_float.rs
new file mode 100644
index 000000000..50ac8e208
--- /dev/null
+++ b/tests/ui/simd/libm_no_std_cant_float.rs
@@ -0,0 +1,22 @@
+#![crate_type = "rlib"]
+#![no_std]
+#![feature(portable_simd)]
+use core::simd::f32x4;
+use core::simd::SimdFloat;
+
+// For SIMD float ops, the LLIR version which is used to implement the portable
+// forms of them may become calls to math.h AKA libm. So, we can't guarantee
+// we can compile them for #![no_std] crates.
+// Someday we may solve this.
+// Until then, this test at least guarantees these functions require std.
+fn guarantee_no_std_nolibm_calls() -> f32x4 {
+    let x = f32x4::from_array([0.1, 0.5, 0.6, -1.5]);
+    let x2 = x + x;
+    let _xc = x.ceil(); //~ ERROR E0599
+    let _xf = x.floor(); //~ ERROR E0599
+    let _xr = x.round(); //~ ERROR E0599
+    let _xt = x.trunc(); //~ ERROR E0599
+    let _xfma = x.mul_add(x, x); //~ ERROR E0599
+    let _xsqrt = x.sqrt(); //~ ERROR E0599
+    x2.abs() * x2
+}