added all flavors of zap for anding
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelPattern.cpp b/lib/Target/Alpha/AlphaISelPattern.cpp
index 9b07ff7..fbd7bb1 100644
--- a/lib/Target/Alpha/AlphaISelPattern.cpp
+++ b/lib/Target/Alpha/AlphaISelPattern.cpp
@@ -1692,6 +1692,26 @@
}
//Fall through
case ISD::AND:
+ //handle zap
+ if (opcode == ISD::AND && N.getOperand(1).getOpcode() == ISD::Constant)
+ {
+ uint64_t k = cast<ConstantSDNode>(N.getOperand(1))->getValue();
+ unsigned int build = 0;
+ for(int i = 0; i < 8; ++i)
+ {
+ if (k & 0xFF == 0xFF)
+ build |= 1 << i;
+ else if (k & 0xFF != 0)
+ { build = 0; break; }
+ k >>= 8;
+ }
+ if (build)
+ {
+ Tmp1 = SelectExpr(N.getOperand(0));
+ BuildMI(BB, Alpha::ZAPNOTi, 2, Result).addReg(Tmp1).addImm(build);
+ return Result;
+ }
+ }
case ISD::OR:
//Check operand(0) == Not
if (N.getOperand(0).getOpcode() == ISD::XOR &&