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author | Anton Korobeynikov <asl@math.spbu.ru> | 2009-08-26 13:44:29 +0000 |
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committer | Anton Korobeynikov <asl@math.spbu.ru> | 2009-08-26 13:44:29 +0000 |
commit | cd76128f182b9a9f3986384523cf90f4c30e4d35 (patch) | |
tree | 939263e00edd02b6b91f26752a3249449f7632e0 /lib/Target | |
parent | 3772fb11feabfa304faddaaf902eaf57307766af (diff) | |
download | llvm-cd76128f182b9a9f3986384523cf90f4c30e4d35.tar.gz llvm-cd76128f182b9a9f3986384523cf90f4c30e4d35.tar.bz2 llvm-cd76128f182b9a9f3986384523cf90f4c30e4d35.tar.xz |
Add dummy inline asm handling for 'r' constraint. This fixes PR4778
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80085 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
-rw-r--r-- | lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp | 16 | ||||
-rw-r--r-- | lib/Target/MSP430/MSP430ISelLowering.cpp | 38 | ||||
-rw-r--r-- | lib/Target/MSP430/MSP430ISelLowering.h | 5 |
3 files changed, 59 insertions, 0 deletions
diff --git a/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp b/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp index 8724eefc69..6e2e9599df 100644 --- a/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp +++ b/lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp @@ -58,6 +58,9 @@ namespace { void printCCOperand(const MachineInstr *MI, int OpNum); void printInstruction(const MachineInstr *MI); // autogenerated. void printMachineInstruction(const MachineInstr * MI); + bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, + unsigned AsmVariant, + const char *ExtraCode); void emitFunctionHeader(const MachineFunction &MF); bool runOnMachineFunction(MachineFunction &F); @@ -243,6 +246,19 @@ void MSP430AsmPrinter::printCCOperand(const MachineInstr *MI, int OpNum) { } } +/// PrintAsmOperand - Print out an operand for an inline asm expression. +/// +bool MSP430AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, + unsigned AsmVariant, + const char *ExtraCode) { + // Does this asm operand have a single letter operand modifier? + if (ExtraCode && ExtraCode[0]) + return true; // Unknown modifier. + + printOperand(MI, OpNo); + return false; +} + // Force static initialization. extern "C" void LLVMInitializeMSP430AsmPrinter() { RegisterAsmPrinter<MSP430AsmPrinter> X(TheMSP430Target); diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp index 3e6169e514..4c3e3984c4 100644 --- a/lib/Target/MSP430/MSP430ISelLowering.cpp +++ b/lib/Target/MSP430/MSP430ISelLowering.cpp @@ -151,6 +151,44 @@ unsigned MSP430TargetLowering::getFunctionAlignment(const Function *F) const { } //===----------------------------------------------------------------------===// +// MSP430 Inline Assembly Support +//===----------------------------------------------------------------------===// + +/// getConstraintType - Given a constraint letter, return the type of +/// constraint it is for this target. +TargetLowering::ConstraintType +MSP430TargetLowering::getConstraintType(const std::string &Constraint) const { + if (Constraint.size() == 1) { + switch (Constraint[0]) { + case 'r': + return C_RegisterClass; + default: + break; + } + } + return TargetLowering::getConstraintType(Constraint); +} + +std::pair<unsigned, const TargetRegisterClass*> +MSP430TargetLowering:: +getRegForInlineAsmConstraint(const std::string &Constraint, + EVT VT) const { + if (Constraint.size() == 1) { + // GCC Constraint Letters + switch (Constraint[0]) { + default: break; + case 'r': // GENERAL_REGS + if (VT == MVT::i8) + return std::make_pair(0U, MSP430::GR8RegisterClass); + + return std::make_pair(0U, MSP430::GR16RegisterClass); + } + } + + return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT); +} + +//===----------------------------------------------------------------------===// // Calling Convention Implementation //===----------------------------------------------------------------------===// diff --git a/lib/Target/MSP430/MSP430ISelLowering.h b/lib/Target/MSP430/MSP430ISelLowering.h index 1339ccda07..7947b0ff86 100644 --- a/lib/Target/MSP430/MSP430ISelLowering.h +++ b/lib/Target/MSP430/MSP430ISelLowering.h @@ -84,6 +84,11 @@ namespace llvm { SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG); SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG); + TargetLowering::ConstraintType + getConstraintType(const std::string &Constraint) const; + std::pair<unsigned, const TargetRegisterClass*> + getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const; + MachineBasicBlock* EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *BB) const; |