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.
diff --git a/lib/Target/PIC16/PIC16ISelLowering.cpp b/lib/Target/PIC16/PIC16ISelLowering.cpp
index 4cf2b8b..2aa451c 100644
--- a/lib/Target/PIC16/PIC16ISelLowering.cpp
+++ b/lib/Target/PIC16/PIC16ISelLowering.cpp
@@ -371,6 +371,11 @@
return MVT::i8;
}
+MVT::SimpleValueType
+PIC16TargetLowering::getCmpLibcallReturnType() const {
+ return MVT::i8;
+}
+
/// The type legalizer framework of generating legalizer can generate libcalls
/// only when the operand/result types are illegal.
/// PIC16 needs to generate libcalls even for the legal types (i8) for some ops.
diff --git a/lib/Target/PIC16/PIC16ISelLowering.h b/lib/Target/PIC16/PIC16ISelLowering.h
index 2949465..afdd4b4 100644
--- a/lib/Target/PIC16/PIC16ISelLowering.h
+++ b/lib/Target/PIC16/PIC16ISelLowering.h
@@ -84,6 +84,7 @@
virtual const char *getTargetNodeName(unsigned Opcode) const;
/// getSetCCResultType - Return the ISD::SETCC ValueType
virtual MVT::SimpleValueType getSetCCResultType(EVT ValType) const;
+ virtual MVT::SimpleValueType getCmpLibcallReturnType() const;
SDValue LowerShift(SDValue Op, SelectionDAG &DAG);
SDValue LowerMUL(SDValue Op, SelectionDAG &DAG);
SDValue LowerADD(SDValue Op, SelectionDAG &DAG);