diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp b/llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp index 10636b86c3b..a1aa841eccc 100644 --- a/llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp +++ b/llvm/lib/Target/PowerPC/PPCVSXSwapRemoval.cpp @@ -407,9 +407,9 @@ bool PPCVSXSwapRemoval::gatherVectorInstructions() { case PPC::VSPLTB: case PPC::VSPLTH: case PPC::VSPLTW: + case PPC::XXSPLTW: // Splats are lane-sensitive, but we can use special handling - // to adjust the source lane for the splat. This is not yet - // implemented. When it is, we need to uncomment the following: + // to adjust the source lane for the splat. SwapVector[VecIdx].IsSwappable = 1; SwapVector[VecIdx].SpecialHandling = SHValues::SH_SPLAT; break; @@ -515,7 +515,6 @@ bool PPCVSXSwapRemoval::gatherVectorInstructions() { // permute control vectors (for shift values 1, 2, 3). However, // VPERM has a more restrictive register class. case PPC::XXSLDWI: - case PPC::XXSPLTW: break; } } @@ -806,12 +805,21 @@ void PPCVSXSwapRemoval::handleSpecialSwappables(int EntryIdx) { llvm_unreachable("Unexpected splat opcode"); case PPC::VSPLTB: NElts = 16; break; case PPC::VSPLTH: NElts = 8; break; - case PPC::VSPLTW: NElts = 4; break; + case PPC::VSPLTW: + case PPC::XXSPLTW: NElts = 4; break; } - unsigned EltNo = MI->getOperand(1).getImm(); + unsigned EltNo; + if (MI->getOpcode() == PPC::XXSPLTW) + EltNo = MI->getOperand(2).getImm(); + else + EltNo = MI->getOperand(1).getImm(); + EltNo = (EltNo + NElts / 2) % NElts; - MI->getOperand(1).setImm(EltNo); + if (MI->getOpcode() == PPC::XXSPLTW) + MI->getOperand(2).setImm(EltNo); + else + MI->getOperand(1).setImm(EltNo); DEBUG(dbgs() << " Into: "); DEBUG(MI->dump()); |
