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Revert "Revert "Add Constant Hoisting Pass" (r200034)"

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This reverts commit r200058 and adds the using directive for
ARMTargetTransformInfo to silence two g++ overload warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200062 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Juergen Ributzka
2014-01-25 02:02:55 +00:00
parent 1d1670227b
commit 943ce55f39
21 changed files with 723 additions and 41 deletions
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18
lib/CodeGen/SelectionDAG/TargetLowering.cpp
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@@ -1470,17 +1470,23 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1,
if (Cond == ISD::SETGE || Cond == ISD::SETUGE) {
if (C1 == MinVal) return DAG.getConstant(1, VT); // X >= MIN --> true
// X >= C0 --> X > (C0-1)
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C1-1, N1.getValueType()),
(Cond == ISD::SETGE) ? ISD::SETGT : ISD::SETUGT);
APInt C = C1-1;
if (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
isLegalICmpImmediate(C.getSExtValue())))
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C, N1.getValueType()),
(Cond == ISD::SETGE) ? ISD::SETGT : ISD::SETUGT);
}
if (Cond == ISD::SETLE || Cond == ISD::SETULE) {
if (C1 == MaxVal) return DAG.getConstant(1, VT); // X <= MAX --> true
// X <= C0 --> X < (C0+1)
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C1+1, N1.getValueType()),
(Cond == ISD::SETLE) ? ISD::SETLT : ISD::SETULT);
APInt C = C1+1;
if (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
isLegalICmpImmediate(C.getSExtValue())))
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C, N1.getValueType()),
(Cond == ISD::SETLE) ? ISD::SETLT : ISD::SETULT);
}
if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MinVal)