Remove unused statistic

Prefer 'neg X' to 'subfic 0, X' since neg does not set XER[CA]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23001 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 5300f59b89f9cdccef3298772abac7ea5bda310e..8e3e9f73d11128e3bc028b8de47bb73d6fb7c2d2 100644 (file)
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -28,7 +28,6 @@
 using namespace llvm;
 
 namespace {
-  Statistic<> Recorded("ppc-codegen", "Number of recording ops emitted");
   Statistic<> FusedFP ("ppc-codegen", "Number of fused fp operations");
   Statistic<> FrameOff("ppc-codegen", "Number of frame idx offsets collapsed");
     
@@ -599,8 +598,11 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) {
     if (Ty == MVT::i32) {
       unsigned Imm;
       if (isIntImmediate(N->getOperand(0), Imm) && isInt16(Imm)) {
-        CurDAG->SelectNodeTo(N, Ty, PPC::SUBFIC, Select(N->getOperand(1)),
-                             getI32Imm(Lo16(Imm)));
+        if (0 == Imm)
+          CurDAG->SelectNodeTo(N, Ty, PPC::NEG, Select(N->getOperand(1)));
+        else
+          CurDAG->SelectNodeTo(N, Ty, PPC::SUBFIC, Select(N->getOperand(1)),
+                               getI32Imm(Lo16(Imm)));
         break;
       }
       if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), N->getOperand(1),