Allow isize/usize in simd_cast

1 files changed, 16 insertions, 4 deletions

diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs
index 07d49b6e729..f472178dbc6 100644
--- a/compiler/rustc_codegen_llvm/src/intrinsic.rs
+++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs
@@ -1715,14 +1715,26 @@ unsupported {} from `{}` with element `{}` of size `{}` to `{}`"#,
         let (in_style, in_width) = match in_elem.kind() {
             // vectors of pointer-sized integers should've been
             // disallowed before here, so this unwrap is safe.
-            ty::Int(i) => (Style::Int(true), i.bit_width().unwrap()),
-            ty::Uint(u) => (Style::Int(false), u.bit_width().unwrap()),
+            ty::Int(i) => (
+                Style::Int(true),
+                i.normalize(bx.tcx().sess.target.pointer_width).bit_width().unwrap(),
+            ),
+            ty::Uint(u) => (
+                Style::Int(false),
+                u.normalize(bx.tcx().sess.target.pointer_width).bit_width().unwrap(),
+            ),
             ty::Float(f) => (Style::Float, f.bit_width()),
             _ => (Style::Unsupported, 0),
         };
         let (out_style, out_width) = match out_elem.kind() {
-            ty::Int(i) => (Style::Int(true), i.bit_width().unwrap()),
-            ty::Uint(u) => (Style::Int(false), u.bit_width().unwrap()),
+            ty::Int(i) => (
+                Style::Int(true),
+                i.normalize(bx.tcx().sess.target.pointer_width).bit_width().unwrap(),
+            ),
+            ty::Uint(u) => (
+                Style::Int(false),
+                u.normalize(bx.tcx().sess.target.pointer_width).bit_width().unwrap(),
+            ),
             ty::Float(f) => (Style::Float, f.bit_width()),
             _ => (Style::Unsupported, 0),
         };