From: Dan Gohman <gohman@apple.com>
Date: Fri, 29 Feb 2008 01:44:25 +0000 (+0000)
Subject: Use the new convertFromAPInt instead of convertFromZeroExtendedInteger,
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=c7773bf90ee4398ccdeb847db6330cf4507b832b;p=oota-llvm.git

Use the new convertFromAPInt instead of convertFromZeroExtendedInteger,
which allows more of the surrounding arithmetic to be done with APInt
instead of uint64_t.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47745 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 37dab7d7c16..2acb1e36684 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3754,12 +3754,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
           SDOperand True, False;
           MVT::ValueType VT =  Node->getOperand(0).getValueType();
           MVT::ValueType NVT = Node->getValueType(0);
-          unsigned ShiftAmt = MVT::getSizeInBits(NVT)-1;
           const uint64_t zero[] = {0, 0};
           APFloat apf = APFloat(APInt(MVT::getSizeInBits(VT), 2, zero));
-          uint64_t x = 1ULL << ShiftAmt;
-          (void)apf.convertFromZeroExtendedInteger
-            (&x, MVT::getSizeInBits(NVT), false, APFloat::rmNearestTiesToEven);
+          APInt x = APInt::getSignBit(MVT::getSizeInBits(NVT));
+          (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven);
           Tmp2 = DAG.getConstantFP(apf, VT);
           Tmp3 = DAG.getSetCC(TLI.getSetCCResultTy(),
                             Node->getOperand(0), Tmp2, ISD::SETLT);
@@ -3768,7 +3766,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
                               DAG.getNode(ISD::FSUB, VT, Node->getOperand(0),
                                           Tmp2));
           False = DAG.getNode(ISD::XOR, NVT, False, 
-                              DAG.getConstant(1ULL << ShiftAmt, NVT));
+                              DAG.getConstant(x, NVT));
           Result = DAG.getNode(ISD::SELECT, NVT, Tmp3, True, False);
           break;
         } else {