Merge from rustc

Author: RalfJung

src/intrinsics/simd.rs

@@ -635,7 +635,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                     this.write_immediate(*val, &dest)?;
                 }
             }
-            "shuffle_generic" => {
+            "shuffle_const_generic" => {
                 let [left, right] = check_intrinsic_arg_count(args)?;
                 let (left, left_len) = this.project_to_simd(left)?;
                 let (right, right_len) = this.project_to_simd(right)?;
@@ -659,7 +659,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                         this.read_immediate(&this.project_index(&right, right_idx)?)?
                     } else {
                         throw_ub_format!(
-                            "`simd_shuffle_generic` index {src_index} is out-of-bounds for 2 vectors with length {dest_len}"
+                            "`simd_shuffle_const_generic` index {src_index} is out-of-bounds for 2 vectors with length {dest_len}"
                         );
                     };
                     this.write_immediate(*val, &dest)?;

tests/pass/intrinsics/portable-simd.rs

@@ -16,7 +16,7 @@ use std::simd::prelude::*;
 
 #[rustc_intrinsic]
 #[rustc_nounwind]
-pub unsafe fn simd_shuffle_generic<T, U, const IDX: &'static [u32]>(_x: T, _y: T) -> U;
+pub unsafe fn simd_shuffle_const_generic<T, U, const IDX: &'static [u32]>(_x: T, _y: T) -> U;
 
 fn simd_ops_f32() {
     let a = f32x4::splat(10.0);
@@ -619,13 +619,13 @@ fn simd_intrinsics() {
             simd_select(i8x4::from_array([0, -1, -1, 0]), b, a),
             i32x4::from_array([10, 2, 10, 10])
         );
-        assert_eq!(simd_shuffle_generic::<_, i32x4, { &[3, 1, 0, 2] }>(a, b), a,);
+        assert_eq!(simd_shuffle_const_generic::<_, i32x4, { &[3, 1, 0, 2] }>(a, b), a,);
         assert_eq!(
             simd_shuffle::<_, _, i32x4>(a, b, const { u32x4::from_array([3u32, 1, 0, 2]) }),
             a,
         );
         assert_eq!(
-            simd_shuffle_generic::<_, i32x4, { &[7, 5, 4, 6] }>(a, b),
+            simd_shuffle_const_generic::<_, i32x4, { &[7, 5, 4, 6] }>(a, b),
             i32x4::from_array([4, 2, 1, 10]),
         );
         assert_eq!(