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
diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index 84e39b4..2831617 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -637,7 +637,8 @@
}
}
- 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 1026169..d9a5a13 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -713,6 +713,10 @@
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.