diff options
Diffstat (limited to 'lib/Target/PIC16/PIC16InstrInfo.cpp')
-rw-r--r-- | lib/Target/PIC16/PIC16InstrInfo.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/Target/PIC16/PIC16InstrInfo.cpp b/lib/Target/PIC16/PIC16InstrInfo.cpp index 2a769e8..8418423 100644 --- a/lib/Target/PIC16/PIC16InstrInfo.cpp +++ b/lib/Target/PIC16/PIC16InstrInfo.cpp @@ -184,3 +184,31 @@ bool PIC16InstrInfo::isMoveInstr(const MachineInstr &MI, return false; } +/// InsertBranch - Insert a branch into the end of the specified +/// MachineBasicBlock. This operands to this method are the same as those +/// returned by AnalyzeBranch. This is invoked in cases where AnalyzeBranch +/// returns success and when an unconditional branch (TBB is non-null, FBB is +/// null, Cond is empty) needs to be inserted. It returns the number of +/// instructions inserted. +unsigned PIC16InstrInfo:: +InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, + MachineBasicBlock *FBB, + const SmallVectorImpl<MachineOperand> &Cond) const { + // Shouldn't be a fall through. + assert(TBB && "InsertBranch must not be told to insert a fallthrough"); + + if (FBB == 0) { // One way branch. + if (Cond.empty()) { + // Unconditional branch? + DebugLoc dl = DebugLoc::getUnknownLoc(); + BuildMI(&MBB, dl, get(PIC16::br_uncond)).addMBB(TBB); + } + return 1; + } + + // FIXME: If the there are some conditions specified then conditional branch + // should be generated. + // For the time being no instruction is being generated therefore + // returning NULL. + return 0; +} |