diff options
Diffstat (limited to 'llvm/lib/Target/Alpha')
| -rw-r--r-- | llvm/lib/Target/Alpha/AlphaISelLowering.cpp | 13 | ||||
| -rw-r--r-- | llvm/lib/Target/Alpha/AlphaISelLowering.h | 5 |
2 files changed, 13 insertions, 5 deletions
diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp index b3f865cf4a8..b2b738db2eb 100644 --- a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp +++ b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp @@ -157,11 +157,6 @@ AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM) setStackPointerRegisterToSaveRestore(Alpha::R30); - addLegalFPImmediate(APFloat(+0.0)); //F31 - addLegalFPImmediate(APFloat(+0.0f)); //F31 - addLegalFPImmediate(APFloat(-0.0)); //-F31 - addLegalFPImmediate(APFloat(-0.0f)); //-F31 - setJumpBufSize(272); setJumpBufAlignment(16); @@ -919,3 +914,11 @@ AlphaTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const { // The Alpha target isn't yet aware of offsets. return false; } + +bool AlphaTargetLowering::isFPImmLegal(const APFloat &Imm) const { + // +0.0 F31 + // +0.0f F31 + // -0.0 -F31 + // -0.0f -F31 + return Imm.isZero() || Imm.isNegZero(); +} diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.h b/llvm/lib/Target/Alpha/AlphaISelLowering.h index b580c9d7126..fbffbed939a 100644 --- a/llvm/lib/Target/Alpha/AlphaISelLowering.h +++ b/llvm/lib/Target/Alpha/AlphaISelLowering.h @@ -102,6 +102,11 @@ namespace llvm { /// getFunctionAlignment - Return the Log2 alignment of this function. virtual unsigned getFunctionAlignment(const Function *F) const; + /// isFPImmLegal - Returns true if the target can instruction select the + /// specified FP immediate natively. If false, the legalizer will + /// materialize the FP immediate as a load from a constant pool. + virtual bool isFPImmLegal(const APFloat &Imm) const; + private: // Helpers for custom lowering. void LowerVAARG(SDNode *N, SDValue &Chain, SDValue &DataPtr, |
