Auto merge of #69094 - Dylan-DPC:rollup-4qe7uv1, r=Dylan-DPC

Rollup of 8 pull requests

Successful merges:

 - #67585 (Improve `char::is_ascii_*` codegen)
 - #68914 (Speed up `SipHasher128`.)
 - #68994 (rustbuild: include channel in sanitizers installed name)
 - #69032 (ICE in nightly-2020-02-08: handle TerminatorKind::Yield in librustc_mir::transform::promote_consts::Validator method)
 - #69034 (parser: Remove `Parser::prev_token_kind`)
 - #69042 (Remove backtrace header text)
 - #69059 (Remove a few unused objects)
 - #69089 (Properly use the darwin archive format on Apple targets)

Failed merges:

r? @ghost

1 files changed, 12 insertions, 17 deletions

diff --git a/src/librustc_parse/parser/expr.rs b/src/librustc_parse/parser/expr.rs
index eacc95e0395..c8c0ba4c66e 100644
--- a/src/librustc_parse/parser/expr.rs
+++ b/src/librustc_parse/parser/expr.rs
@@ -1,6 +1,6 @@
 use super::pat::{GateOr, PARAM_EXPECTED};
 use super::ty::{AllowPlus, RecoverQPath};
-use super::{BlockMode, Parser, PathStyle, PrevTokenKind, Restrictions, TokenType};
+use super::{BlockMode, Parser, PathStyle, Restrictions, TokenType};
 use super::{SemiColonMode, SeqSep, TokenExpectType};
 use crate::maybe_recover_from_interpolated_ty_qpath;
 
@@ -166,17 +166,10 @@ impl<'a> Parser<'a> {
 
         self.expected_tokens.push(TokenType::Operator);
         while let Some(op) = self.check_assoc_op() {
-            // Adjust the span for interpolated LHS to point to the `$lhs` token and not to what
-            // it refers to. Interpolated identifiers are unwrapped early and never show up here
-            // as `PrevTokenKind::Interpolated` so if LHS is a single identifier we always process
-            // it as "interpolated", it doesn't change the answer for non-interpolated idents.
-            let lhs_span = match (self.prev_token_kind, &lhs.kind) {
-                (PrevTokenKind::Interpolated, _) => self.prev_span,
-                (PrevTokenKind::Ident, &ExprKind::Path(None, ref path))
-                    if path.segments.len() == 1 =>
-                {
-                    self.prev_span
-                }
+            // Adjust the span for interpolated LHS to point to the `$lhs` token
+            // and not to what it refers to.
+            let lhs_span = match self.unnormalized_prev_token().kind {
+                TokenKind::Interpolated(..) => self.prev_span,
                 _ => lhs.span,
             };
 
@@ -535,11 +528,13 @@ impl<'a> Parser<'a> {
         expr: PResult<'a, P<Expr>>,
     ) -> PResult<'a, (Span, P<Expr>)> {
         expr.map(|e| {
-            if self.prev_token_kind == PrevTokenKind::Interpolated {
-                (self.prev_span, e)
-            } else {
-                (e.span, e)
-            }
+            (
+                match self.unnormalized_prev_token().kind {
+                    TokenKind::Interpolated(..) => self.prev_span,
+                    _ => e.span,
+                },
+                e,
+            )
         })
     }