diff options
Diffstat (limited to 'lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp')
| -rw-r--r-- | lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp index f3a8d3f..06882e1 100644 --- a/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp +++ b/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp @@ -13,6 +13,7 @@ // #define DEBUG_TYPE "mccodeemitter" #include "MCTargetDesc/MipsBaseInfo.h" +#include "MCTargetDesc/MipsDirectObjLower.h" #include "MCTargetDesc/MipsFixupKinds.h" #include "MCTargetDesc/MipsMCTargetDesc.h" #include "llvm/ADT/APFloat.h" @@ -109,16 +110,35 @@ void MipsMCCodeEmitter:: EncodeInstruction(const MCInst &MI, raw_ostream &OS, SmallVectorImpl<MCFixup> &Fixups) const { - uint32_t Binary = getBinaryCodeForInstr(MI, Fixups); + + // Non-pseudo instructions that get changed for direct object + // only based on operand values. + // If this list of instructions get much longer we will move + // the check to a function call. Until then, this is more efficient. + MCInst TmpInst = MI; + switch (MI.getOpcode()) { + // If shift amount is >= 32 it the inst needs to be lowered further + case Mips::DSLL: + case Mips::DSRL: + case Mips::DSRA: + Mips::LowerLargeShift(TmpInst); + break; + // Double extract instruction is chosen by pos and size operands + case Mips::DEXT: + case Mips::DINS: + Mips::LowerDextDins(TmpInst); + } + + uint32_t Binary = getBinaryCodeForInstr(TmpInst, Fixups); // Check for unimplemented opcodes. - // Unfortunately in MIPS both NOT and SLL will come in with Binary == 0 + // Unfortunately in MIPS both NOP and SLL will come in with Binary == 0 // so we have to special check for them. - unsigned Opcode = MI.getOpcode(); + unsigned Opcode = TmpInst.getOpcode(); if ((Opcode != Mips::NOP) && (Opcode != Mips::SLL) && !Binary) llvm_unreachable("unimplemented opcode in EncodeInstruction()"); - const MCInstrDesc &Desc = MCII.get(MI.getOpcode()); + const MCInstrDesc &Desc = MCII.get(TmpInst.getOpcode()); uint64_t TSFlags = Desc.TSFlags; // Pseudo instructions don't get encoded and shouldn't be here |