[llvm] r367205 - [NFC][ARM][ParallelDSP] Remove AreSymmetrical
Sam Parker via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 29 01:12:24 PDT 2019
Author: sam_parker
Date: Mon Jul 29 01:12:24 2019
New Revision: 367205
URL: http://llvm.org/viewvc/llvm-project?rev=367205&view=rev
Log:
[NFC][ARM][ParallelDSP] Remove AreSymmetrical
We explicitly search for a parallel mac and we only care about its
inputs, checking for symmetry doesn't add anything here.
Modified:
llvm/trunk/lib/Target/ARM/ARMParallelDSP.cpp
Modified: llvm/trunk/lib/Target/ARM/ARMParallelDSP.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMParallelDSP.cpp?rev=367205&r1=367204&r2=367205&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMParallelDSP.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMParallelDSP.cpp Mon Jul 29 01:12:24 2019
@@ -79,8 +79,6 @@ namespace {
}
unsigned size() const { return AllValues.size(); }
-
- bool AreSymmetrical(BinOpChain *Other);
};
/// Represent a sequence of multiply-accumulate operations with the aim to
@@ -566,9 +564,6 @@ bool ARMParallelDSP::CreateParallelPairs
}
auto CanPair = [&](Reduction &R, BinOpChain *PMul0, BinOpChain *PMul1) {
- if (!PMul0->AreSymmetrical(PMul1))
- return false;
-
// The first elements of each vector should be loads with sexts. If we
// find that its two pairs of consecutive loads, then these can be
// transformed into two wider loads and the users can be replaced with
@@ -766,44 +761,6 @@ LoadInst* ARMParallelDSP::CreateWideLoad
return WideLoad;
}
-// Compare the value lists in Other to this chain.
-bool BinOpChain::AreSymmetrical(BinOpChain *Other) {
- // Element-by-element comparison of Value lists returning true if they are
- // instructions with the same opcode or constants with the same value.
- auto CompareValueList = [](const ValueList &VL0,
- const ValueList &VL1) {
- if (VL0.size() != VL1.size()) {
- LLVM_DEBUG(dbgs() << "Muls are mismatching operand list lengths: "
- << VL0.size() << " != " << VL1.size() << "\n");
- return false;
- }
-
- const unsigned Pairs = VL0.size();
-
- for (unsigned i = 0; i < Pairs; ++i) {
- const Value *V0 = VL0[i];
- const Value *V1 = VL1[i];
- const auto *Inst0 = dyn_cast<Instruction>(V0);
- const auto *Inst1 = dyn_cast<Instruction>(V1);
-
- if (!Inst0 || !Inst1)
- return false;
-
- if (Inst0->isSameOperationAs(Inst1))
- continue;
-
- const APInt *C0, *C1;
- if (!(match(V0, m_APInt(C0)) && match(V1, m_APInt(C1)) && C0 == C1))
- return false;
- }
-
- return true;
- };
-
- return CompareValueList(LHS, Other->LHS) &&
- CompareValueList(RHS, Other->RHS);
-}
-
Pass *llvm::createARMParallelDSPPass() {
return new ARMParallelDSP();
}
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