Allow targets to specify the return type of libcalls that are generated for floating point comparisons, rather than hard-coding them as i32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92199 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 1 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index 84e39b4803..2831617ebd 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -637,7 +637,8 @@ void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
     }
   }
 
-  EVT RetVT = MVT::i32; // FIXME: is this the correct return type?
+  // Use the target specific return value for comparions lib calls.
+  EVT RetVT = TLI.getCmpLibcallReturnType();
   SDValue Ops[2] = { LHSInt, RHSInt };
   NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
   NewRHS = DAG.getConstant(0, RetVT);
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 1026169151..d9a5a13666 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -713,6 +713,10 @@ MVT::SimpleValueType TargetLowering::getSetCCResultType(EVT VT) const {
   return PointerTy.SimpleTy;
 }
 
+MVT::SimpleValueType TargetLowering::getCmpLibcallReturnType() const {
+  return MVT::i32; // return the default value
+}
+
 /// 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.