For PR786:
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index a4d3c54..39090ed 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1041,7 +1041,6 @@
ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0);
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1);
MVT::ValueType VT = N1.getValueType();
- unsigned OpSizeInBits = MVT::getSizeInBits(VT);
// fold (and c1, c2) -> c1&c2
if (N0C && N1C)
@@ -1319,7 +1318,7 @@
/// MatchRotateHalf - Match "(X shl/srl V1) & V2" where V2 may not be present.
static bool MatchRotateHalf(SDOperand Op, SDOperand &Shift, SDOperand &Mask) {
if (Op.getOpcode() == ISD::AND) {
- if (ConstantSDNode *RHSC = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
+ if (isa<ConstantSDNode>(Op.getOperand(1))) {
Mask = Op.getOperand(1);
Op = Op.getOperand(0);
} else {
@@ -1856,9 +1855,6 @@
SDOperand N2 = N->getOperand(2);
SDOperand N3 = N->getOperand(3);
SDOperand N4 = N->getOperand(4);
- ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0);
- ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1);
- ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2);
ISD::CondCode CC = cast<CondCodeSDNode>(N4)->get();
// fold select_cc lhs, rhs, x, x, cc -> x
@@ -1900,7 +1896,7 @@
MVT::ValueType VT = N->getValueType(0);
// fold (sext c1) -> c1
- if (ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0))
+ if (isa<ConstantSDNode>(N0))
return DAG.getNode(ISD::SIGN_EXTEND, VT, N0);
// fold (sext (sext x)) -> (sext x)
@@ -1958,7 +1954,7 @@
MVT::ValueType VT = N->getValueType(0);
// fold (zext c1) -> c1
- if (ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0))
+ if (isa<ConstantSDNode>(N0))
return DAG.getNode(ISD::ZERO_EXTEND, VT, N0);
// fold (zext (zext x)) -> (zext x)
// fold (zext (aext x)) -> (zext x)
@@ -3578,7 +3574,7 @@
if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val)) {
uint64_t C1 = N1C->getValue();
- if (ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0.Val)) {
+ if (isa<ConstantSDNode>(N0.Val)) {
return DAG.FoldSetCC(VT, N0, N1, Cond);
} else {
// If the LHS is '(srl (ctlz x), 5)', the RHS is 0/1, and this is an
@@ -3806,7 +3802,7 @@
return DAG.getSetCC(VT, N1, N0, ISD::getSetCCSwappedOperands(Cond));
}
- if (ConstantFPSDNode *N0C = dyn_cast<ConstantFPSDNode>(N0.Val)) {
+ if (isa<ConstantFPSDNode>(N0.Val)) {
// Constant fold or commute setcc.
SDOperand O = DAG.FoldSetCC(VT, N0, N1, Cond);
if (O.Val) return O;