From 002adabb3a251a81ef304353eefb1bf96ec388f6 Mon Sep 17 00:00:00 2001
From: Fangrui Song <maskray@google.com>
Date: Mon, 16 Dec 2019 15:04:16 -0800
Subject: [PATCH] [AArch64][SVE] Change pattern generation code to fix
 -Wimplicit-fallthrough after D71483

---
 llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp b/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
index e138c2d..f40652f 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
@@ -2867,16 +2867,23 @@ bool AArch64DAGToDAGISel::SelectSVELogicalImm(SDValue N, MVT VT, SDValue &Imm) {
     switch (VT.SimpleTy) {
       case MVT::i8:
         ImmVal &= 0xFF;
-        ImmVal |= (ImmVal << 8);
+        ImmVal |= ImmVal << 8;
+        ImmVal |= ImmVal << 16;
+        ImmVal |= ImmVal << 32;
+        break;
       case MVT::i16:
         ImmVal &= 0xFFFF;
-        ImmVal |= (ImmVal << 16);
+        ImmVal |= ImmVal << 16;
+        ImmVal |= ImmVal << 32;
+        break;
       case MVT::i32:
         ImmVal &= 0xFFFFFFFF;
-        ImmVal |= (ImmVal << 32);
+        ImmVal |= ImmVal << 32;
         break;
-      default:
+      case MVT::i64:
         break;
+      default:
+        llvm_unreachable("Unexpected type");
     }
 
     uint64_t encoding;
-- 
2.7.4