Refactor a bit to make some helper methods static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168546 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 37 deletions

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index d68441b..084711b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -3687,16 +3687,12 @@ getF32Constant(SelectionDAG &DAG, unsigned Flt) {
   return DAG.getConstantFP(APFloat(APInt(32, Flt)), MVT::f32);
 }
 
-/// visitExp - Lower an exp intrinsic. Handles the special sequences for
+/// expandExp - Lower an exp intrinsic. Handles the special sequences for
 /// limited-precision mode.
-void
-SelectionDAGBuilder::visitExp(const CallInst &I) {
-  SDValue result;
-  DebugLoc dl = getCurDebugLoc();
-
-  if (getValue(I.getArgOperand(0)).getValueType() == MVT::f32 &&
+static SDValue expandExp(DebugLoc dl, SDValue Op, SelectionDAG &DAG,
+                         const TargetLowering &TLI) {
+  if (Op.getValueType() == MVT::f32 &&
       LimitFloatPrecision > 0 && LimitFloatPrecision <= 18) {
-    SDValue Op = getValue(I.getArgOperand(0));
 
     // Put the exponent in the right bit position for later addition to the
     // final result:
@@ -3785,17 +3781,13 @@ SelectionDAGBuilder::visitExp(const CallInst &I) {
 
     // Add the exponent into the result in integer domain.
     SDValue t13 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, TwoToFracPartOfX);
-    result = DAG.getNode(ISD::BITCAST, dl, MVT::f32,
-                         DAG.getNode(ISD::ADD, dl, MVT::i32,
-                                     t13, IntegerPartOfX));
-  } else {
-    // No special expansion.
-    result = DAG.getNode(ISD::FEXP, dl,
-                         getValue(I.getArgOperand(0)).getValueType(),
-                         getValue(I.getArgOperand(0)));
+    return DAG.getNode(ISD::BITCAST, dl, MVT::f32,
+                       DAG.getNode(ISD::ADD, dl, MVT::i32,
+                                   t13, IntegerPartOfX));
   }
 
-  setValue(&I, result);
+  // No special expansion.
+  return DAG.getNode(ISD::FEXP, dl, Op.getValueType(), Op);
 }
 
 /// expandLog - Lower a log intrinsic. Handles the special sequences for
@@ -4077,17 +4069,12 @@ static SDValue expandLog10(DebugLoc dl, SDValue Op, SelectionDAG &DAG,
   return DAG.getNode(ISD::FLOG10, dl, Op.getValueType(), Op);
 }
 
-/// visitExp2 - Lower an exp2 intrinsic. Handles the special sequences for
+/// expandExp2 - Lower an exp2 intrinsic. Handles the special sequences for
 /// limited-precision mode.
-void
-SelectionDAGBuilder::visitExp2(const CallInst &I) {
-  SDValue result;
-  DebugLoc dl = getCurDebugLoc();
-
-  if (getValue(I.getArgOperand(0)).getValueType() == MVT::f32 &&
+static SDValue expandExp2(DebugLoc dl, SDValue Op, SelectionDAG &DAG,
+                          const TargetLowering &TLI) {
+  if (Op.getValueType() == MVT::f32 &&
       LimitFloatPrecision > 0 && LimitFloatPrecision <= 18) {
-    SDValue Op = getValue(I.getArgOperand(0));
-
     SDValue IntegerPartOfX = DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Op);
 
     //   FractionalPartOfX = x - (float)IntegerPartOfX;
@@ -4168,17 +4155,13 @@ SelectionDAGBuilder::visitExp2(const CallInst &I) {
     // Add the exponent into the result in integer domain.
     SDValue t13 = DAG.getNode(ISD::BITCAST, dl, MVT::i32,
                               TwoToFractionalPartOfX);
-    result = DAG.getNode(ISD::BITCAST, dl, MVT::f32,
-                         DAG.getNode(ISD::ADD, dl, MVT::i32,
-                                     t13, IntegerPartOfX));
-  } else {
-    // No special expansion.
-    result = DAG.getNode(ISD::FEXP2, dl,
-                         getValue(I.getArgOperand(0)).getValueType(),
-                         getValue(I.getArgOperand(0)));
+    return DAG.getNode(ISD::BITCAST, dl, MVT::f32,
+                       DAG.getNode(ISD::ADD, dl, MVT::i32,
+                                   t13, IntegerPartOfX));
   }
 
-  setValue(&I, result);
+  // No special expansion.
+  return DAG.getNode(ISD::FEXP2, dl, Op.getValueType(), Op);
 }
 
 /// visitPow - Lower a pow intrinsic. Handles the special sequences for
@@ -4896,10 +4879,10 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
     setValue(&I, expandLog10(dl, getValue(I.getArgOperand(0)), DAG, TLI));
     return 0;
   case Intrinsic::exp:
-    visitExp(I);
+    setValue(&I, expandExp(dl, getValue(I.getArgOperand(0)), DAG, TLI));
     return 0;
   case Intrinsic::exp2:
-    visitExp2(I);
+    setValue(&I, expandExp2(dl, getValue(I.getArgOperand(0)), DAG, TLI));
     return 0;
   case Intrinsic::pow:
     visitPow(I);