From d332fc38f3f4f7910f505aff45f4742fd565dcca Mon Sep 17 00:00:00 2001
From: kennytm <kennytm@gmail.com>
Date: Sat, 14 Jul 2018 23:04:33 +0800
Subject: [PATCH] Revert "Auto merge of #52212 - kennytm:o3-again,
 r=alexcrichton"

This reverts commit 1731f0af22af16c461b2b7abe58988b8549b2de6, reversing
changes made to 0a8275f8b677304458c6161e26436dfe67ab766b.
---
 src/Cargo.toml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Cargo.toml b/src/Cargo.toml
index be4db9d3e2aa0..5ae26fea2d13b 100644
--- a/src/Cargo.toml
+++ b/src/Cargo.toml
@@ -40,6 +40,13 @@ members = [
   "tools/rls/test_data/workspace_symbol",
 ]
 
+# Curiously, LLVM 7.0 will segfault if compiled with opt-level=3
+# See issue https://github.com/rust-lang/rust/issues/52378
+[profile.release]
+opt-level = 2
+[profile.bench]
+opt-level = 2
+
 # These options are controlled from our rustc wrapper script, so turn them off
 # here and have them controlled elsewhere.
 [profile.dev]