make the new intrinsics safe

Author: RalfJung

core/src/intrinsics/mod.rs

@@ -2740,13 +2740,13 @@ pub unsafe fn truncf128(_x: f128) -> f128 {
 #[rustc_intrinsic_must_be_overridden]
 #[rustc_nounwind]
 #[cfg(not(bootstrap))]
-pub unsafe fn round_ties_even_f16(_x: f16) -> f16 {
+pub fn round_ties_even_f16(_x: f16) -> f16 {
     unreachable!()
 }
 
 /// To be removed on next bootstrap bump.
 #[cfg(bootstrap)]
-pub unsafe fn round_ties_even_f16(x: f16) -> f16 {
+pub fn round_ties_even_f16(x: f16) -> f16 {
     #[rustc_intrinsic]
     #[rustc_intrinsic_must_be_overridden]
     #[rustc_nounwind]
@@ -2767,13 +2767,13 @@ pub unsafe fn round_ties_even_f16(x: f16) -> f16 {
 #[rustc_intrinsic_must_be_overridden]
 #[rustc_nounwind]
 #[cfg(not(bootstrap))]
-pub unsafe fn round_ties_even_f32(_x: f32) -> f32 {
+pub fn round_ties_even_f32(_x: f32) -> f32 {
     unreachable!()
 }
 
 /// To be removed on next bootstrap bump.
 #[cfg(bootstrap)]
-pub unsafe fn round_ties_even_f32(x: f32) -> f32 {
+pub fn round_ties_even_f32(x: f32) -> f32 {
     #[rustc_intrinsic]
     #[rustc_intrinsic_must_be_overridden]
     #[rustc_nounwind]
@@ -2794,13 +2794,13 @@ pub unsafe fn round_ties_even_f32(x: f32) -> f32 {
 #[rustc_intrinsic_must_be_overridden]
 #[rustc_nounwind]
 #[cfg(not(bootstrap))]
-pub unsafe fn round_ties_even_f64(_x: f64) -> f64 {
+pub fn round_ties_even_f64(_x: f64) -> f64 {
     unreachable!()
 }
 
 /// To be removed on next bootstrap bump.
 #[cfg(bootstrap)]
-pub unsafe fn round_ties_even_f64(x: f64) -> f64 {
+pub fn round_ties_even_f64(x: f64) -> f64 {
     #[rustc_intrinsic]
     #[rustc_intrinsic_must_be_overridden]
     #[rustc_nounwind]
@@ -2821,13 +2821,13 @@ pub unsafe fn round_ties_even_f64(x: f64) -> f64 {
 #[rustc_intrinsic_must_be_overridden]
 #[rustc_nounwind]
 #[cfg(not(bootstrap))]
-pub unsafe fn round_ties_even_f128(_x: f128) -> f128 {
+pub fn round_ties_even_f128(_x: f128) -> f128 {
     unreachable!()
 }
 
 /// To be removed on next bootstrap bump.
 #[cfg(bootstrap)]
-pub unsafe fn round_ties_even_f128(x: f128) -> f128 {
+pub fn round_ties_even_f128(x: f128) -> f128 {
     #[rustc_intrinsic]
     #[rustc_intrinsic_must_be_overridden]
     #[rustc_nounwind]

std/src/f128.rs

@@ -126,7 +126,7 @@ impl f128 {
     #[unstable(feature = "f128", issue = "116909")]
     #[must_use = "method returns a new number and does not mutate the original value"]
     pub fn round_ties_even(self) -> f128 {
-        unsafe { intrinsics::round_ties_even_f128(self) }
+        intrinsics::round_ties_even_f128(self)
     }
 
     /// Returns the integer part of `self`.

std/src/f16.rs

@@ -126,7 +126,7 @@ impl f16 {
     #[unstable(feature = "f16", issue = "116909")]
     #[must_use = "method returns a new number and does not mutate the original value"]
     pub fn round_ties_even(self) -> f16 {
-        unsafe { intrinsics::round_ties_even_f16(self) }
+        intrinsics::round_ties_even_f16(self)
     }
 
     /// Returns the integer part of `self`.

std/src/f32.rs

@@ -122,7 +122,7 @@ impl f32 {
     #[stable(feature = "round_ties_even", since = "1.77.0")]
     #[inline]
     pub fn round_ties_even(self) -> f32 {
-        unsafe { intrinsics::round_ties_even_f32(self) }
+        intrinsics::round_ties_even_f32(self)
     }
 
     /// Returns the integer part of `self`.

std/src/f64.rs

@@ -122,7 +122,7 @@ impl f64 {
     #[stable(feature = "round_ties_even", since = "1.77.0")]
     #[inline]
     pub fn round_ties_even(self) -> f64 {
-        unsafe { intrinsics::round_ties_even_f64(self) }
+        intrinsics::round_ties_even_f64(self)
     }
 
     /// Returns the integer part of `self`.