From ba46b6837367204e0ae4ba020a788df06dc2ebd8 Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Fri, 11 Nov 2022 20:03:33 +0000
Subject: [PATCH] Skip stable hashing without incremental.

---
 compiler/rustc_middle/src/ty/context.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs
index 0ac712565b5..8f96f5a9eb3 100644
--- a/compiler/rustc_middle/src/ty/context.rs
+++ b/compiler/rustc_middle/src/ty/context.rs
@@ -192,7 +192,9 @@ impl<'tcx> CtxtInterners<'tcx> {
 
                     // It's impossible to hash inference variables (and will ICE), so we don't need to try to cache them.
                     // Without incremental, we rarely stable-hash types, so let's not do it proactively.
-                    let stable_hash = if flags.flags.intersects(TypeFlags::NEEDS_INFER) {
+                    let stable_hash = if flags.flags.intersects(TypeFlags::NEEDS_INFER)
+                        || sess.opts.incremental.is_none()
+                    {
                         Fingerprint::ZERO
                     } else {
                         let mut hasher = StableHasher::new();