diff options
Diffstat (limited to 'compiler/rustc_codegen_ssa/src/mir/place.rs')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/place.rs | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/place.rs b/compiler/rustc_codegen_ssa/src/mir/place.rs index fbe30154a..cf02f59f6 100644 --- a/compiler/rustc_codegen_ssa/src/mir/place.rs +++ b/compiler/rustc_codegen_ssa/src/mir/place.rs @@ -9,7 +9,7 @@ use rustc_middle::mir; use rustc_middle::mir::tcx::PlaceTy; use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout}; use rustc_middle::ty::{self, Ty}; -use rustc_target::abi::{Abi, Align, FieldsShape, Int, TagEncoding}; +use rustc_target::abi::{Abi, Align, FieldsShape, Int, Pointer, TagEncoding}; use rustc_target::abi::{VariantIdx, Variants}; #[derive(Copy, Clone, Debug)] @@ -209,6 +209,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> { bx: &mut Bx, cast_to: Ty<'tcx>, ) -> V { + let dl = &bx.tcx().data_layout; let cast_to_layout = bx.cx().layout_of(cast_to); let cast_to_size = cast_to_layout.layout.size(); let cast_to = bx.cx().immediate_backend_type(cast_to_layout); @@ -250,12 +251,14 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> { TagEncoding::Niche { untagged_variant, ref niche_variants, niche_start } => { // Cast to an integer so we don't have to treat a pointer as a // special case. - let (tag, tag_llty) = if tag_scalar.primitive().is_ptr() { - let t = bx.type_isize(); - let tag = bx.ptrtoint(tag_imm, t); - (tag, t) - } else { - (tag_imm, bx.cx().immediate_backend_type(tag_op.layout)) + let (tag, tag_llty) = match tag_scalar.primitive() { + // FIXME(erikdesjardins): handle non-default addrspace ptr sizes + Pointer(_) => { + let t = bx.type_from_integer(dl.ptr_sized_integer()); + let tag = bx.ptrtoint(tag_imm, t); + (tag, t) + } + _ => (tag_imm, bx.cx().immediate_backend_type(tag_op.layout)), }; let tag_size = tag_scalar.size(bx.cx()); |