1. This changes handles the cases of (~x)&y and x&(~y) yielding ANDC, and

   (~x)|y and x|(~y) yielding ORC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22771 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index cef895b5d208824e090755cb7f81c2d59fd9f104..500333fb2966e0927042f774fe48eef6820895f0 100644 (file)
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -1717,10 +1717,17 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) {
        return Result;
       }
     }
+    if (isOprNot(N.getOperand(1))) {
+      Tmp1 = SelectExpr(N.getOperand(0));
+      Tmp2 = SelectExpr(N.getOperand(1).getOperand(0));
+      BuildMI(BB, PPC::ANDC, 2, Result).addReg(Tmp1).addReg(Tmp2);
+      RecordSuccess = false;
+      return Result;
+    }
     if (isOprNot(N.getOperand(0))) {
-      Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
-      Tmp2 = SelectExpr(N.getOperand(1));
-      BuildMI(BB, PPC::ANDC, 2, Result).addReg(Tmp2).addReg(Tmp1);
+      Tmp1 = SelectExpr(N.getOperand(1));
+      Tmp2 = SelectExpr(N.getOperand(0).getOperand(0));
+      BuildMI(BB, PPC::ANDC, 2, Result).addReg(Tmp1).addReg(Tmp2);
       RecordSuccess = false;
       return Result;
     }
@@ -1737,6 +1744,20 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) {
       return Result;
     if (SelectIntImmediateExpr(N, Result, PPC::ORIS, PPC::ORI))
       return Result;
+    if (isOprNot(N.getOperand(1))) {
+      Tmp1 = SelectExpr(N.getOperand(0));
+      Tmp2 = SelectExpr(N.getOperand(1).getOperand(0));
+      BuildMI(BB, PPC::ORC, 2, Result).addReg(Tmp1).addReg(Tmp2);
+      RecordSuccess = false;
+      return Result;
+    }
+    if (isOprNot(N.getOperand(0))) {
+      Tmp1 = SelectExpr(N.getOperand(1));
+      Tmp2 = SelectExpr(N.getOperand(0).getOperand(0));
+      BuildMI(BB, PPC::ORC, 2, Result).addReg(Tmp1).addReg(Tmp2);
+      RecordSuccess = false;
+      return Result;
+    }
     // emit regular or
     Tmp1 = SelectExpr(N.getOperand(0));
     Tmp2 = SelectExpr(N.getOperand(1));