diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp index 3ac8e94..4f8d01b 100644 --- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp +++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp @@ -105,13 +105,6 @@ namespace { return CurDAG->getTargetConstant(Imm, PPCLowering->getPointerTy()); } - /// isRunOfOnes - Returns true iff Val consists of one contiguous run of 1s - /// with any number of 0s on either side. The 1s are allowed to wrap from - /// LSB to MSB, so 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. - /// 0x0F0F0000 is not, since all 1s are not contiguous. - static bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME); - - /// isRotateAndMask - Returns true if Mask and Shift can be folded into a /// rotate and mask opcode and mask operation. static bool isRotateAndMask(SDNode *N, unsigned Mask, bool isShiftMask, @@ -418,30 +411,6 @@ SDNode *PPCDAGToDAGISel::getFrameIndex(SDNode *SN, SDNode *N, unsigned Offset) { getSmallIPtrImm(Offset)); } -bool PPCDAGToDAGISel::isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) { - if (!Val) - return false; - - if (isShiftedMask_32(Val)) { - // look for the first non-zero bit - MB = countLeadingZeros(Val); - // look for the first zero bit after the run of ones - ME = countLeadingZeros((Val - 1) ^ Val); - return true; - } else { - Val = ~Val; // invert mask - if (isShiftedMask_32(Val)) { - // effectively look for the first zero bit - ME = countLeadingZeros(Val) - 1; - // effectively look for the first one bit after the run of zeros - MB = countLeadingZeros((Val - 1) ^ Val) + 1; - return true; - } - } - // no run present - return false; -} - bool PPCDAGToDAGISel::isRotateAndMask(SDNode *N, unsigned Mask, bool isShiftMask, unsigned &SH, unsigned &MB, unsigned &ME) { |