Replace TargetLowering::isIntImmLegal() with

ScalarTargetTransformInfo::getIntImmCost() instead. "Legal" is a poorly defined
term for something like integer immediate materialization. It is always possible
to materialize an integer immediate. Whether to use it for memcpy expansion is
more a "cost" conceern.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169929 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 2 deletions

diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 5cf40236c5..5a44201ec4 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -22,6 +22,7 @@
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetTransformImpl.h"
 #include <vector>
 
 namespace llvm {
@@ -387,8 +388,6 @@ namespace llvm {
     /// materialize the FP immediate as a load from a constant pool.
     virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const;
 
-    virtual bool isIntImmLegal(const APInt &Imm, EVT VT) const;
-
     virtual bool getTgtMemIntrinsic(IntrinsicInfo &Info,
                                     const CallInst &I,
                                     unsigned Intrinsic) const;
@@ -575,6 +574,16 @@ namespace llvm {
     FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
                              const TargetLibraryInfo *libInfo);
   }
+
+  class ARMScalarTargetTransformImpl : public ScalarTargetTransformImpl {
+    const ARMSubtarget *Subtarget;
+  public:
+    explicit ARMScalarTargetTransformImpl(const TargetLowering *TL) :
+      ScalarTargetTransformImpl(TL),
+      Subtarget(&TL->getTargetMachine().getSubtarget<ARMSubtarget>()) {};
+
+    virtual unsigned getIntImmCost(const APInt &Imm, Type *Ty) const;
+  };
 }
 
 #endif  // ARMISELLOWERING_H