Kill off the old SimplifyInstruction API by converting remaining users.

llvm-svn: 301673
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp
index c862cfd..173b8cb 100644
--- a/llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -5959,7 +5959,7 @@
     // It is possible for very late stage optimizations (such as SimplifyCFG)
     // to introduce PHI nodes too late to be cleaned up.  If we detect such a
     // trivial PHI, go ahead and zap it here.
-    if (Value *V = SimplifyInstruction(P, *DL, TLInfo, nullptr)) {
+    if (Value *V = SimplifyInstruction(P, {*DL, TLInfo})) {
       P->replaceAllUsesWith(V);
       P->eraseFromParent();
       ++NumPHIsElim;