Remove `Session` methods that duplicate `DiagCtxt` methods.

Also add some `dcx` methods to types that wrap `TyCtxt`, for easier
access.

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_codegen_gcc/src/context.rs b/compiler/rustc_codegen_gcc/src/context.rs
index ab9c703db37..053f759329f 100644
--- a/compiler/rustc_codegen_gcc/src/context.rs
+++ b/compiler/rustc_codegen_gcc/src/context.rs
@@ -500,9 +500,9 @@ impl<'gcc, 'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'gcc, 'tcx> {
     #[inline]
     fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
         if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
-            self.sess().emit_fatal(respan(span, err.into_diagnostic()))
+            self.tcx.dcx().emit_fatal(respan(span, err.into_diagnostic()))
         } else {
-            self.tcx.sess.emit_fatal(ssa_errors::FailedToGetLayout { span, ty, err })
+            self.tcx.dcx().emit_fatal(ssa_errors::FailedToGetLayout { span, ty, err })
         }
     }
 }
@@ -518,7 +518,7 @@ impl<'gcc, 'tcx> FnAbiOfHelpers<'tcx> for CodegenCx<'gcc, 'tcx> {
         fn_abi_request: FnAbiRequest<'tcx>,
     ) -> ! {
         if let FnAbiError::Layout(LayoutError::SizeOverflow(_)) = err {
-            self.sess().emit_fatal(respan(span, err))
+            self.tcx.dcx().emit_fatal(respan(span, err))
         } else {
             match fn_abi_request {
                 FnAbiRequest::OfFnPtr { sig, extra_args } => {