Move the SplatByte helper to APInt and generalize it a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175621 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 09885d8..0640311 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3377,17 +3377,6 @@
&ArgChains[0], ArgChains.size());
}
-/// SplatByte - Distribute ByteVal over NumBits bits.
-static APInt SplatByte(unsigned NumBits, uint8_t ByteVal) {
- APInt Val = APInt(NumBits, ByteVal);
- unsigned Shift = 8;
- for (unsigned i = NumBits; i > 8; i >>= 1) {
- Val = (Val << Shift) | Val;
- Shift <<= 1;
- }
- return Val;
-}
-
/// getMemsetValue - Vectorized representation of the memset value
/// operand.
static SDValue getMemsetValue(SDValue Value, EVT VT, SelectionDAG &DAG,
@@ -3396,7 +3385,8 @@
unsigned NumBits = VT.getScalarType().getSizeInBits();
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Value)) {
- APInt Val = SplatByte(NumBits, C->getZExtValue() & 255);
+ assert(C->getAPIntValue().getBitWidth() == 8);
+ APInt Val = APInt::getSplat(NumBits, C->getAPIntValue());
if (VT.isInteger())
return DAG.getConstant(Val, VT);
return DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(VT), Val), VT);
@@ -3406,7 +3396,7 @@
if (NumBits > 8) {
// Use a multiplication with 0x010101... to extend the input to the
// required length.
- APInt Magic = SplatByte(NumBits, 0x01);
+ APInt Magic = APInt::getSplat(NumBits, APInt(8, 0x01));
Value = DAG.getNode(ISD::MUL, dl, VT, Value, DAG.getConstant(Magic, VT));
}