[GlobalISel][LegalizerHelper] Add some missing MI change observer calls.
No test as it's a preventative fix.
llvm-svn: 352691
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 91100d0..ab1b633 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -779,9 +779,11 @@
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;
}
}