1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
index 5b7761f..af35669 100644
--- a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
@@ -641,6 +641,18 @@ bool PPCMIPeephole::simplifyCode() {
           DefMI->getOperand(0).setReg(MI.getOperand(0).getReg());
           LLVM_DEBUG(dbgs() << "Removing redundant splat: ");
           LLVM_DEBUG(MI.dump());
+        } else if (Immed == 2 &&
+                   (DefOpc == PPC::VSPLTB || DefOpc == PPC::VSPLTH ||
+                    DefOpc == PPC::VSPLTW || DefOpc == PPC::XXSPLTW)) {
+          // Swap of various vector splats, convert to copy.
+          ToErase = &MI;
+          Simplified = true;
+          LLVM_DEBUG(dbgs() << "Optimizing swap(vsplt[b|h|w]|xxspltw) => "
+                               "copy(vsplt[b|h|w]|xxspltw): ");
+          LLVM_DEBUG(MI.dump());
+          BuildMI(MBB, &MI, MI.getDebugLoc(), TII->get(PPC::COPY),
+                  MI.getOperand(0).getReg())
+              .add(MI.getOperand(1));
         }
         break;
       }