Reed Kotler | 1595f36 | 2013-04-09 19:46:01 +0000 | [diff] [blame^] | 1 | //===---- MipsModuleISelDAGToDAG.h - Change Subtarget --------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file defines a pass used to change the subtarget for the |
| 11 | // Mips Instruction selector. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef MIPSMODULEISELDAGTODAG_H |
| 16 | #define MIPSMODULEISELDAGTODAG_H |
| 17 | |
| 18 | #include "Mips.h" |
| 19 | #include "MipsSubtarget.h" |
| 20 | #include "MipsTargetMachine.h" |
| 21 | #include "llvm/CodeGen/SelectionDAGISel.h" |
| 22 | |
| 23 | |
| 24 | //===----------------------------------------------------------------------===// |
| 25 | // Instruction Selector Implementation |
| 26 | //===----------------------------------------------------------------------===// |
| 27 | |
| 28 | //===----------------------------------------------------------------------===// |
| 29 | // MipsModuleDAGToDAGISel - MIPS specific code to select MIPS machine |
| 30 | // instructions for SelectionDAG operations. |
| 31 | //===----------------------------------------------------------------------===// |
| 32 | namespace llvm { |
| 33 | |
| 34 | class MipsModuleDAGToDAGISel : public MachineFunctionPass { |
| 35 | public: |
| 36 | |
| 37 | static char ID; |
| 38 | |
| 39 | explicit MipsModuleDAGToDAGISel(MipsTargetMachine &TM_) |
| 40 | : MachineFunctionPass(ID), |
| 41 | TM(TM_), Subtarget(TM.getSubtarget<MipsSubtarget>()) {} |
| 42 | |
| 43 | // Pass Name |
| 44 | virtual const char *getPassName() const { |
| 45 | return "MIPS DAG->DAG Pattern Instruction Selection"; |
| 46 | } |
| 47 | |
| 48 | virtual bool runOnMachineFunction(MachineFunction &MF); |
| 49 | |
| 50 | virtual SDNode *Select(SDNode *N) { |
| 51 | llvm_unreachable("unexpected"); |
| 52 | } |
| 53 | |
| 54 | protected: |
| 55 | /// Keep a pointer to the MipsSubtarget around so that we can make the right |
| 56 | /// decision when generating code for different targets. |
| 57 | const TargetMachine &TM; |
| 58 | const MipsSubtarget &Subtarget; |
| 59 | }; |
| 60 | |
| 61 | /// createMipsISelDag - This pass converts a legalized DAG into a |
| 62 | /// MIPS-specific DAG, ready for instruction scheduling. |
| 63 | FunctionPass *createMipsModuleISelDag(MipsTargetMachine &TM); |
| 64 | } |
| 65 | |
| 66 | #endif |