[LibCallsShrinkWrap][NFC] Reuse createCond and createOrCond

Add two new functions `createCond` and `createOrCond` that accept extra
arguments Arg and Arg/Arg2 respectively.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D153253

llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp

@@ -79,14 +79,21 @@ class LibCallsShrinkWrap : public InstVisitor<LibCallsShrinkWrap> {
   Value *generateTwoRangeCond(CallInst *CI, const LibFunc &Func);
   Value *generateCondForPow(CallInst *CI, const LibFunc &Func);
 
+  // Create an OR of two conditions with given Arg and Arg2.
+  Value *createOrCond(CallInst *CI, Value *Arg, CmpInst::Predicate Cmp,
+                      float Val, Value *Arg2, CmpInst::Predicate Cmp2,
+                      float Val2) {
+    IRBuilder<> BBBuilder(CI);
+    auto Cond2 = createCond(BBBuilder, Arg2, Cmp2, Val2);
+    auto Cond1 = createCond(BBBuilder, Arg, Cmp, Val);
+    return BBBuilder.CreateOr(Cond1, Cond2);
+  }
+
   // Create an OR of two conditions.
   Value *createOrCond(CallInst *CI, CmpInst::Predicate Cmp, float Val,
                       CmpInst::Predicate Cmp2, float Val2) {
-    IRBuilder<> BBBuilder(CI);
     Value *Arg = CI->getArgOperand(0);
-    auto Cond2 = createCond(BBBuilder, Arg, Cmp2, Val2);
-    auto Cond1 = createCond(BBBuilder, Arg, Cmp, Val);
-    return BBBuilder.CreateOr(Cond1, Cond2);
+    return createOrCond(CI, Arg, Cmp, Val, Arg, Cmp2, Val2);
   }
 
   // Create a single condition using IRBuilder.
@@ -98,11 +105,17 @@ class LibCallsShrinkWrap : public InstVisitor<LibCallsShrinkWrap> {
     return BBBuilder.CreateFCmp(Cmp, Arg, V);
   }
 
+  // Create a single condition with given Arg.
+  Value *createCond(CallInst *CI, Value *Arg, CmpInst::Predicate Cmp,
+                    float Val) {
+    IRBuilder<> BBBuilder(CI);
+    return createCond(BBBuilder, Arg, Cmp, Val);
+  }
+
   // Create a single condition.
   Value *createCond(CallInst *CI, CmpInst::Predicate Cmp, float Val) {
-    IRBuilder<> BBBuilder(CI);
     Value *Arg = CI->getArgOperand(0);
-    return createCond(BBBuilder, Arg, Cmp, Val);
+    return createCond(CI, Arg, Cmp, Val);
   }
 
   const TargetLibraryInfo &TLI;
@@ -406,7 +419,6 @@ Value *LibCallsShrinkWrap::generateCondForPow(CallInst *CI,
 
   Value *Base = CI->getArgOperand(0);
   Value *Exp = CI->getArgOperand(1);
-  IRBuilder<> BBBuilder(CI);
 
   // Constant Base case.
   if (ConstantFP *CF = dyn_cast<ConstantFP>(Base)) {
@@ -417,10 +429,7 @@ Value *LibCallsShrinkWrap::generateCondForPow(CallInst *CI,
     }
 
     ++NumWrappedOneCond;
-    Constant *V = ConstantFP::get(CI->getContext(), APFloat(127.0f));
-    if (!Exp->getType()->isFloatTy())
-      V = ConstantExpr::getFPExtend(V, Exp->getType());
-    return BBBuilder.CreateFCmp(CmpInst::FCMP_OGT, Exp, V);
+    return createCond(CI, Exp, CmpInst::FCMP_OGT, 127.0f);
   }
 
   // If the Base value coming from an integer type.
@@ -445,16 +454,8 @@ Value *LibCallsShrinkWrap::generateCondForPow(CallInst *CI,
     }
 
     ++NumWrappedTwoCond;
-    Constant *V = ConstantFP::get(CI->getContext(), APFloat(UpperV));
-    Constant *V0 = ConstantFP::get(CI->getContext(), APFloat(0.0f));
-    if (!Exp->getType()->isFloatTy())
-      V = ConstantExpr::getFPExtend(V, Exp->getType());
-    if (!Base->getType()->isFloatTy())
-      V0 = ConstantExpr::getFPExtend(V0, Exp->getType());
-
-    Value *Cond = BBBuilder.CreateFCmp(CmpInst::FCMP_OGT, Exp, V);
-    Value *Cond0 = BBBuilder.CreateFCmp(CmpInst::FCMP_OLE, Base, V0);
-    return BBBuilder.CreateOr(Cond0, Cond);
+    return createOrCond(CI, Base, CmpInst::FCMP_OLE, 0.0f, Exp,
+                        CmpInst::FCMP_OGT, UpperV);
   }
   LLVM_DEBUG(dbgs() << "Not handled pow(): base not from integer convert\n");
   return nullptr;