diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp index ea2156b2e4..b134b23489 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp @@ -2945,26 +2945,27 @@ void AddCatchInfo(CallInst &I, MachineModuleInfo *MMI, /// where Op is the hexidecimal representation of floating point value. static SDValue GetSignificand(SelectionDAG &DAG, SDValue Op) { - SDValue t1 = DAG.getNode(ISD::AND, MVT::i32, Op, - DAG.getConstant(0x007fffff, MVT::i32)); - SDValue t2 = DAG.getNode(ISD::OR, MVT::i32, t1, - DAG.getConstant(0x3f800000, MVT::i32)); - return DAG.getNode(ISD::BIT_CONVERT, MVT::f32, t2); + SDValue t1 = DAG.getNode(ISD::AND, MVT::i32, Op, + DAG.getConstant(0x007fffff, MVT::i32)); + SDValue t2 = DAG.getNode(ISD::OR, MVT::i32, t1, + DAG.getConstant(0x3f800000, MVT::i32)); + return DAG.getNode(ISD::BIT_CONVERT, MVT::f32, t2); } /// GetExponent - Get the exponent: /// -/// (float)((Op1 >> 23) - 127); +/// (float)(int)(((Op & 0x7f800000) >> 23) - 127); /// /// where Op is the hexidecimal representation of floating point value. static SDValue GetExponent(SelectionDAG &DAG, SDValue Op, const TargetLowering &TLI) { - SDValue t1 = DAG.getNode(ISD::SRL, MVT::i32, Op, - DAG.getConstant(23, TLI.getShiftAmountTy())); - SDValue t2 = DAG.getNode(ISD::SUB, MVT::i32, t1, - DAG.getConstant(127, MVT::i32)); - // SDValue t3 = DAG.getNode(ISD::BIT_CONVERT, MVT::i32, t2); - return DAG.getNode(ISD::UINT_TO_FP, MVT::f32, t2); + SDValue t0 = DAG.getNode(ISD::AND, MVT::i32, Op, + DAG.getConstant(0x7f800000, MVT::i32)); + SDValue t1 = DAG.getNode(ISD::SRL, MVT::i32, t0, + DAG.getConstant(23, TLI.getShiftAmountTy())); + SDValue t2 = DAG.getNode(ISD::SUB, MVT::i32, t1, + DAG.getConstant(127, MVT::i32)); + return DAG.getNode(ISD::SINT_TO_FP, MVT::f32, t2); } /// getF32Constant - Get 32-bit floating point constant. |