From 8b38d7e57176691ff0b8dd2ad88842d8ba850642 Mon Sep 17 00:00:00 2001
From: Amara Emerson <aemerson@apple.com>
Date: Wed, 30 Jan 2019 23:42:46 +0000
Subject: [PATCH] [GlobalISel][LegalizerHelper] Add some missing MI change
 observer calls.

No test as it's a preventative fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352691 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/GlobalISel/LegalizerHelper.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 91100d02af1..ab1b633edee 100644
--- a/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -779,9 +779,11 @@ LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalar(MachineInstr &MI,
   case TargetOpcode::G_SHL:
   case TargetOpcode::G_LSHR:
   case TargetOpcode::G_ASHR: {
+    Observer.changingInstr(MI);
     if (TypeIdx != 1)
       return UnableToLegalize; // TODO
     narrowScalarSrc(MI, NarrowTy, 2);
+    Observer.changedInstr(MI);
     return Legalized;
   }
   }
-- 
2.40.0