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Add a little hook

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llvm-svn: 21883
This commit is contained in:
Chris Lattner 2005-05-12 02:02:21 +00:00
parent b38ffd7fbf
commit 045b3f0110
1 changed files with 14 additions and 0 deletions
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14
include/llvm/Target/TargetLowering.h
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@ -76,6 +76,10 @@ public:
MVT::ValueType getShiftAmountTy() const { return ShiftAmountTy; }
OutOfRangeShiftAmount getShiftAmountFlavor() const {return ShiftAmtHandling; }
/// isSetCCExpensive - Return true if the setcc operation is expensive for
/// this target.
bool isSetCCExpensive() const { return SetCCIsExpensive; }
/// getSetCCResultTy - Return the ValueType of the result of setcc operations.
///
MVT::ValueType getSetCCResultTy() const { return SetCCResultTy; }
@ -207,6 +211,11 @@ protected:
ShiftAmtHandling = OORSA;
}
/// setSetCCIxExpensive - This is a short term hack for targets that codegen
/// setcc as a conditional branch. This encourages the code generator to fold
/// setcc operations into other operations if possible.
void setSetCCIsExpensive() { SetCCIsExpensive = true; }
/// addRegisterClass - Add the specified register class as an available
/// regclass for the specified value type. This indicates the selector can
/// handle values of that class natively.
@ -310,6 +319,11 @@ private:
OutOfRangeShiftAmount ShiftAmtHandling;
/// SetCCIsExpensive - This is a short term hack for targets that codegen
/// setcc as a conditional branch. This encourages the code generator to fold
/// setcc operations into other operations if possible.
bool SetCCIsExpensive;
/// SetCCResultTy - The type that SetCC operations use. This defaults to the
/// PointerTy.
MVT::ValueType SetCCResultTy;