From 554c6762e8cbc0a2fd6b61201254ba37df57e8db Mon Sep 17 00:00:00 2001
From: Jakub Staszak <kubastaszak@gmail.com>
Date: Sun, 30 Sep 2012 21:24:57 +0000
Subject: [PATCH] Use dyn_cast instead of isa and cast.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164924 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index a48a6256e55..4ed5ffb9e7f 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -136,13 +136,11 @@ bool ISD::isBuildVectorAllOnes(const SDNode *N) {
   // constants are.
   SDValue NotZero = N->getOperand(i);
   unsigned EltSize = N->getValueType(0).getVectorElementType().getSizeInBits();
-  if (isa<ConstantSDNode>(NotZero)) {
-    if (cast<ConstantSDNode>(NotZero)->getAPIntValue().countTrailingOnes() <
-        EltSize)
+  if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(NotZero)) {
+    if (CN->getAPIntValue().countTrailingOnes() < EltSize)
       return false;
-  } else if (isa<ConstantFPSDNode>(NotZero)) {
-    if (cast<ConstantFPSDNode>(NotZero)->getValueAPF()
-              .bitcastToAPInt().countTrailingOnes() < EltSize)
+  } else if (ConstantFPSDNode *CFPN = dyn_cast<ConstantFPSDNode>(NotZero)) {
+    if (CFPN->getValueAPF().bitcastToAPInt().countTrailingOnes() < EltSize)
       return false;
   } else
     return false;
@@ -179,11 +177,11 @@ bool ISD::isBuildVectorAllZeros(const SDNode *N) {
   // Do not accept build_vectors that aren't all constants or which have non-0
   // elements.
   SDValue Zero = N->getOperand(i);
-  if (isa<ConstantSDNode>(Zero)) {
-    if (!cast<ConstantSDNode>(Zero)->isNullValue())
+  if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Zero)) {
+    if (!CN->isNullValue())
       return false;
-  } else if (isa<ConstantFPSDNode>(Zero)) {
-    if (!cast<ConstantFPSDNode>(Zero)->getValueAPF().isPosZero())
+  } else if (ConstantFPSDNode *CFPN = dyn_cast<ConstantFPSDNode>(Zero)) {
+    if (!CFPN->getValueAPF().isPosZero())
       return false;
   } else
     return false;