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[SLP] Fix PoisonValue in the argument VL of setOperand. #118949

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Merged
merged 7 commits into from
Dec 11, 2024
Merged

[SLP] Fix PoisonValue in the argument VL of setOperand. #118949

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2a81c2c
[SLP] Pre-commit test.
HanKuanChen Dec 6, 2024
4a407ef
[SLP] Fix PoisonValue in the argument VL of setOperand.
HanKuanChen Dec 6, 2024
bd9491e
apply comment
HanKuanChen Dec 6, 2024
e9b8dee
VL0 is already calculated by getSameOpcode
HanKuanChen Dec 9, 2024
5b5fc90
[SLP] NFC. Replace TreeEntry::setOperandsInOrder with VLOperands. (#1…
HanKuanChen Dec 6, 2024
517c32f
Merge remote-tracking branch 'origin/slp-refactor-vloperands' into sl…
HanKuanChen Dec 10, 2024
142bd19
apply comment (do not pass VL0 to setOperand)
HanKuanChen Dec 10, 2024
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25 changes: 12 additions & 13 deletions llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3338,14 +3338,13 @@ class BoUpSLP {
copy(OpVL, Operands[OpIdx].begin());
}

/// Set this bundle's operand from \p VL.
void setOperand(ArrayRef<Value *> VL, const BoUpSLP &R,
bool RequireReorder = false) {
VLOperands Ops(VL, R);
/// Set this bundle's operand from Scalars.
void setOperand(const BoUpSLP &R, bool RequireReorder = false) {
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@alexey-bataev alexey-bataev Dec 6, 2024

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Better to pass first instruction as an argument rather than redo the search for it

VLOperands Ops(Scalars, R);
if (RequireReorder)
Ops.reorder();
for (unsigned I :
seq<unsigned>(cast<Instruction>(VL[0])->getNumOperands()))
auto *I0 = cast<Instruction>(*find_if(Scalars, IsaPred<Instruction>));
for (unsigned I : seq<unsigned>(I0->getNumOperands()))
setOperand(I, Ops.getVL(I));
}

Expand Down Expand Up @@ -8446,7 +8445,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
{}, CurrentOrder);
LLVM_DEBUG(dbgs() << "SLP: added inserts bundle.\n");

TE->setOperand(VL, *this);
TE->setOperand(*this);
buildTree_rec(TE->getOperand(1), Depth + 1, {TE, 1});
return;
}
Expand Down Expand Up @@ -8484,7 +8483,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
case TreeEntry::NeedToGather:
llvm_unreachable("Unexpected loads state.");
}
TE->setOperand(VL, *this);
TE->setOperand(*this);
if (State == TreeEntry::ScatterVectorize)
buildTree_rec(PointerOps, Depth + 1, {TE, 0});
return;
Expand Down Expand Up @@ -8524,7 +8523,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
ReuseShuffleIndices);
LLVM_DEBUG(dbgs() << "SLP: added a vector of casts.\n");

TE->setOperand(VL, *this);
TE->setOperand(*this);
for (unsigned I : seq<unsigned>(VL0->getNumOperands()))
buildTree_rec(TE->getOperand(I), Depth + 1, {TE, I});
if (ShuffleOrOp == Instruction::Trunc) {
Expand Down Expand Up @@ -8621,7 +8620,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
ReuseShuffleIndices);
LLVM_DEBUG(dbgs() << "SLP: added a vector of un/bin op.\n");

TE->setOperand(VL, *this, isa<BinaryOperator>(VL0) && isCommutative(VL0));
TE->setOperand(*this, isa<BinaryOperator>(VL0) && isCommutative(VL0));
for (unsigned I : seq<unsigned>(VL0->getNumOperands()))
buildTree_rec(TE->getOperand(I), Depth + 1, {TE, I});
return;
Expand Down Expand Up @@ -8687,7 +8686,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
fixupOrderingIndices(CurrentOrder);
TreeEntry *TE = newTreeEntry(VL, Bundle /*vectorized*/, S, UserTreeIdx,
ReuseShuffleIndices, CurrentOrder);
TE->setOperand(VL, *this);
TE->setOperand(*this);
buildTree_rec(TE->getOperand(0), Depth + 1, {TE, 0});
if (Consecutive)
LLVM_DEBUG(dbgs() << "SLP: added a vector of stores.\n");
Expand All @@ -8703,7 +8702,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,

TreeEntry *TE = newTreeEntry(VL, Bundle /*vectorized*/, S, UserTreeIdx,
ReuseShuffleIndices);
TE->setOperand(VL, *this, isCommutative(VL0));
TE->setOperand(*this, isCommutative(VL0));
for (unsigned I : seq<unsigned>(CI->arg_size())) {
// For scalar operands no need to create an entry since no need to
// vectorize it.
Expand Down Expand Up @@ -8759,7 +8758,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
return;
}

TE->setOperand(VL, *this, isa<BinaryOperator>(VL0) || CI);
TE->setOperand(*this, isa<BinaryOperator>(VL0) || CI);
for (unsigned I : seq<unsigned>(VL0->getNumOperands()))
buildTree_rec(TE->getOperand(I), Depth + 1, {TE, I});
return;
Expand Down
19 changes: 19 additions & 0 deletions llvm/test/Transforms/SLPVectorizer/fix-113880.ll
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=slp-vectorizer -S -slp-max-reg-size=1024 %s | FileCheck %s

define ptr @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: store <4 x double> <double poison, double 0.000000e+00, double 0.000000e+00, double 0.000000e+00>, ptr null, align 8
; CHECK-NEXT: ret ptr null
;
store double poison, ptr null, align 8
%1 = getelementptr i8, ptr null, i64 8
%2 = fmul double 0.000000e+00, 0.000000e+00
store double %2, ptr %1, align 8
%3 = getelementptr i8, ptr null, i64 16
%4 = fmul double 0.000000e+00, 0.000000e+00
store double %4, ptr %3, align 8
%5 = getelementptr i8, ptr null, i64 24
store double %2, ptr %5, align 8
ret ptr null
}
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