1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index be66f7e9e0e..74ed7bc7331 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -838,6 +838,7 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) : TM(tm) {
   InitLibcallNames(LibcallRoutineNames, TM.getTargetTriple());
   InitCmpLibcallCCs(CmpLibcallCCs);
   InitLibcallCallingConvs(LibcallCallingConvs);
+  ReciprocalEstimates.set("all", false, 0);
 }
 
 void TargetLoweringBase::initActions() {
@@ -1485,6 +1486,22 @@ MVT::SimpleValueType TargetLoweringBase::getCmpLibcallReturnType() const {
   return MVT::i32; // return the default value
 }
 
+TargetRecip
+TargetLoweringBase::getTargetRecipForFunc(MachineFunction &MF) const {
+  const Function *F = MF.getFunction();
+  StringRef RecipAttrName = "reciprocal-estimates";
+  if (!F->hasFnAttribute(RecipAttrName))
+    return ReciprocalEstimates;
+
+  // Make a copy of the target's default reciprocal codegen settings.
+  TargetRecip Recips = ReciprocalEstimates;
+
+  // Override any settings that are customized for this function.
+  StringRef RecipString = F->getFnAttribute(RecipAttrName).getValueAsString();
+  Recips.set(RecipString);
+  return Recips;
+}
+
 /// getVectorTypeBreakdown - Vector types are broken down into some number of
 /// legal first class types.  For example, MVT::v8f32 maps to 2 MVT::v4f32
 /// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.