From 3bb2101a25827bed5e3da14b7d3978cd7a40e425 Mon Sep 17 00:00:00 2001
From: Jerry Zhao <jerryz123@berkeley.edu>
Date: Tue, 27 Feb 2024 17:01:56 -0800
Subject: [PATCH] Always checkout CIRCT/LLVM shallow

---
 scripts/build-circt-from-source.sh | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/build-circt-from-source.sh b/scripts/build-circt-from-source.sh
index f9bb727e..56d7966b 100755
--- a/scripts/build-circt-from-source.sh
+++ b/scripts/build-circt-from-source.sh
@@ -49,13 +49,17 @@ fi
 
 
 
-echo "Cloning CIRCT submodules"
+echo "Cloning CIRCT"
 (
     cd $RDIR/tools
-    git submodule update --init circt
-    cd circt
+    git submodule update --init --progress circt
+)
+echo "Cloning CIRCT/LLVM"
+(
+    cd $RDIR/tools/circt
     git submodule init
-    git submodule update
+    git config submodule.llvm.shallow true
+    git submodule update --recommend-shallow --progress llvm
 )
 
 echo "Building CIRCT's LLVM/MLIR"