diff --git a/third_party/subzero/src/IceInstX86Base.h b/third_party/subzero/src/IceInstX86Base.h
index 4c62854..6c140d7 100644
--- a/third_party/subzero/src/IceInstX86Base.h
+++ b/third_party/subzero/src/IceInstX86Base.h
@@ -1249,6 +1249,10 @@
   class InstX86Movd : public InstX86BaseUnaryopXmm<InstX86Base::Movd> {
   public:
     static InstX86Movd *create(Cfg *Func, Variable *Dest, Operand *Src) {
+      // TODO(amaiorano): This fixes assert(Dest->hasReg()) in emitIAS when
+      // there are no more registers left to allocate. Revisit this and fix it
+      // the right way. See b/145529686.
+      Dest->setMustHaveReg();
       return new (Func->allocate<InstX86Movd>()) InstX86Movd(Func, Dest, Src);
     }