From 9b0b28e021b8b032f9501539df812a1fa1da7317 Mon Sep 17 00:00:00 2001
From: Scott Michel <scottm@aero.org>
Date: Tue, 2 Dec 2008 19:55:08 +0000
Subject: [PATCH] Non-functional change: make custom lowering for truncate
 stylistically consistent with the way it's generally done in other places.

llvm-svn: 60439
---
 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index cd90f672513e..d61d6ca6fdfc 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3903,11 +3903,18 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
     switch (getTypeAction(Node->getOperand(0).getValueType())) {
     case Legal:
       Tmp1 = LegalizeOp(Node->getOperand(0));
-      Result = DAG.UpdateNodeOperands(Result, Tmp1);
-      if (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)) ==
-          TargetLowering::Custom) {
-        Tmp1 = TLI.LowerOperation(Result, DAG);
-        if (Tmp1.getNode()) Result = Tmp1;
+      switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
+      default: assert(0 && "Unknown TRUNCATE legalization operation action!");
+      case TargetLowering::Custom:
+	isCustom = true;
+	// FALLTHROUGH
+      case TargetLowering::Legal:
+	Result = DAG.UpdateNodeOperands(Result, Tmp1);
+	if (isCustom) {
+	  Tmp1 = TLI.LowerOperation(Result, DAG);
+	  if (Tmp1.getNode()) Result = Tmp1;
+	}
+	break;
       }
       break;
     case Expand: