diff --git a/lib/Conversion/SCFToCalyx/SCFToCalyx.cpp b/lib/Conversion/SCFToCalyx/SCFToCalyx.cpp
index 6ef0da7e0a68..76a25fa08fbe 100644
--- a/lib/Conversion/SCFToCalyx/SCFToCalyx.cpp
+++ b/lib/Conversion/SCFToCalyx/SCFToCalyx.cpp
@@ -1060,7 +1060,8 @@ static LogicalResult buildAllocOp(ComponentLoweringState &componentState,
       // value's precision handling.
       value = bit_cast<double>(bitValue);
     } else {
-      APInt apInt(/*numBits=*/elmTyBitWidth, bitValue, isSigned);
+      APInt apInt(/*numBits=*/elmTyBitWidth, bitValue, isSigned,
+                  /*implicitTrunc=*/true);
       // The conditional ternary operation will cause the `value` to interpret
       // the underlying data as unsigned regardless `isSigned` or not.
       if (isSigned)
diff --git a/llvm b/llvm
index 8193832fb988..3cc852ece438 160000
--- a/llvm
+++ b/llvm
@@ -1 +1 @@
-Subproject commit 8193832fb988e3df1e8e726634783805dca8d9b6
+Subproject commit 3cc852ece438a63e7b09d1c84a81d21598454e1a