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[Hexagon] Remove unused function from HexagonISelDAGToDAGHVX.cpp 

It will be reintroduced shortly with an actual use.  This change is
simply to eliminate a compilation warning.
This commit is contained in:
Krzysztof Parzyszek 2021-05-25 14:27:02 -05:00
parent 3a678fe3e2
commit 6a2869cf1e
1 changed files with 0 additions and 55 deletions
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55
llvm/lib/Target/Hexagon/HexagonISelDAGToDAGHVX.cpp
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@ -868,7 +868,6 @@ namespace llvm {
OpRef butterfly(ShuffleMask SM, OpRef Va, ResultStack &Results);
OpRef contracting(ShuffleMask SM, OpRef Va, OpRef Vb, ResultStack &Results);
OpRef expanding(ShuffleMask SM, OpRef Va, ResultStack &Results);
OpRef perfect(ShuffleMask SM, OpRef Va, ResultStack &Results);
bool selectVectorConstants(SDNode *N);
@ -1777,60 +1776,6 @@ OpRef HvxSelector::contracting(ShuffleMask SM, OpRef Va, OpRef Vb,
return OpRef::res(Results.top());
}
OpRef HvxSelector::expanding(ShuffleMask SM, OpRef Va, ResultStack &Results) {
DEBUG_WITH_TYPE("isel", {dbgs() << __func__ << '\n';});
// Expanding shuffles (using all elements and inserting into larger vector):
//
// V6_vunpacku{b,h} [*]
//
// [*] Only if the upper elements (filled with 0s) are "don't care" in Mask.
//
// Note: V6_vunpacko{b,h} are or-ing the high byte/half in the result, so
// they are not shuffles.
//
// The argument is a single vector.
int VecLen = SM.Mask.size();
assert(2*HwLen == unsigned(VecLen) && "Expecting vector-pair type");
std::pair<int,unsigned> Strip = findStrip(SM.Mask, 1, VecLen);
// The patterns for the unpacks, in terms of the starting offsets of the
// consecutive strips (L = length of the strip, N = VecLen):
//
// vunpacku: 0, -1, L, -1, 2L, -1 ...
if (Strip.first != 0)
return OpRef::fail();
// The vunpackus only handle byte and half-word.
if (Strip.second != 1 && Strip.second != 2)
return OpRef::fail();
int N = VecLen;
int L = Strip.second;
// First, check the non-ignored strips.
for (int I = 2*L; I < 2*N; I += 2*L) {
auto S = findStrip(SM.Mask.drop_front(I), 1, N-I);
if (S.second != unsigned(L))
return OpRef::fail();
if (2*S.first != I)
return OpRef::fail();
}
// Check the -1s.
for (int I = L; I < 2*N; I += 2*L) {
auto S = findStrip(SM.Mask.drop_front(I), 0, N-I);
if (S.first != -1 || S.second != unsigned(L))
return OpRef::fail();
}
unsigned Opc = Strip.second == 1 ? Hexagon::V6_vunpackub
: Hexagon::V6_vunpackuh;
Results.push(Opc, getPairVT(MVT::i8), {Va});
return OpRef::res(Results.top());
}
OpRef HvxSelector::perfect(ShuffleMask SM, OpRef Va, ResultStack &Results) {
DEBUG_WITH_TYPE("isel", {dbgs() << __func__ << '\n';});
// V6_vdeal{b,h}