Do away with addLegalFPImmediate. Add a target hook isFPImmLegal which returns true if the fp immediate can be natively codegened by target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85281 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 2 insertions, 10 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index e04231074d..e41175623a 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2573,16 +2573,8 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
   case ISD::ConstantFP: {
     ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node);
     // Check to see if this FP immediate is already legal.
-    bool isLegal = false;
-    for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(),
-            E = TLI.legal_fpimm_end(); I != E; ++I) {
-      if (CFP->isExactlyValue(*I)) {
-        isLegal = true;
-        break;
-      }
-    }
     // If this is a legal constant, turn it into a TargetConstantFP node.
-    if (isLegal)
+    if (TLI.isFPImmLegal(CFP->getValueAPF()))
       Results.push_back(SDValue(Node, 0));
     else
       Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI));
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index a2baee4231..9f36b679f3 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -481,7 +481,7 @@ TargetLowering::TargetLowering(TargetMachine &tm,TargetLoweringObjectFile *tlof)
   setOperationAction(ISD::PREFETCH, MVT::Other, Expand);
   
   // ConstantFP nodes default to expand.  Targets can either change this to 
-  // Legal, in which case all fp constants are legal, or use addLegalFPImmediate
+  // Legal, in which case all fp constants are legal, or use isFPImmLegal()
   // to optimize expansions for certain constants.
   setOperationAction(ISD::ConstantFP, MVT::f32, Expand);
   setOperationAction(ISD::ConstantFP, MVT::f64, Expand);