[llvm-commits] CVS: llvm/lib/Target/Alpha/AlphaISelPattern.cpp
Andrew Lenharth
alenhar2 at cs.uiuc.edu
Tue Apr 12 20:47:19 PDT 2005
Changes in directory llvm/lib/Target/Alpha:
AlphaISelPattern.cpp updated: 1.94 -> 1.95
---
Log message:
added all flavors of zap for anding
---
Diffs of the changes: (+20 -0)
AlphaISelPattern.cpp | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+)
Index: llvm/lib/Target/Alpha/AlphaISelPattern.cpp
diff -u llvm/lib/Target/Alpha/AlphaISelPattern.cpp:1.94 llvm/lib/Target/Alpha/AlphaISelPattern.cpp:1.95
--- llvm/lib/Target/Alpha/AlphaISelPattern.cpp:1.94 Tue Apr 12 21:43:40 2005
+++ llvm/lib/Target/Alpha/AlphaISelPattern.cpp Tue Apr 12 22:47:03 2005
@@ -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 &&
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