Change APFloat::convertFromInteger to take the incoming

bit width instead of number of words allocated, which
makes it actually work for int->APF conversions.
Adjust callers.  Add const to one of the APInt constructors
to prevent surprising match when called with const
argument.

llvm-svn: 42210

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 34fca4d6239..340125e761c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3215,7 +3215,8 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
           const uint64_t zero[] = {0, 0};
           APFloat apf = APFloat(APInt(MVT::getSizeInBits(VT), 2, zero));
           uint64_t x = 1ULL << ShiftAmt;
-          (void)apf.convertFromInteger(&x, 1, false, APFloat::rmTowardZero);
+          (void)apf.convertFromInteger(&x, MVT::getSizeInBits(NVT), false, 
+                                       APFloat::rmTowardZero);
           Tmp2 = DAG.getConstantFP(apf, VT);
           Tmp3 = DAG.getSetCC(TLI.getSetCCResultTy(),
                             Node->getOperand(0), Tmp2, ISD::SETLT);