forked from OSchip/llvm-project
Process gep (phi ptr1, ptr2) in SROA
Differential Revision: https://reviews.llvm.org/D79218
This commit is contained in:
Stanislav Mekhanoshin
parent
1caedd0c55
commit
745c6c8458
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@ -3475,15 +3475,60 @@ private:
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Sel->getName() + ".sroa.sel");
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GEPI.replaceAllUsesWith(NSel);
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GEPI.eraseFromParent();
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Instruction *NSelI = cast<Instruction>(NSel);
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Visited.insert(NSelI);
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enqueueUsers(*NSelI);
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LLVM_DEBUG(dbgs() << "\n to: " << *NTrue
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<< "\n " << *NFalse
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<< "\n " << *NSel << '\n');
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if (isa<Instruction>(NTrue))
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visit(cast<Instruction>(NTrue));
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if (isa<Instruction>(NFalse))
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visit(cast<Instruction>(NFalse));
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return true;
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}
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// Fold gep (phi ptr1, ptr2) => phi gep(ptr1), gep(ptr2)
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bool foldGEPPhi(GetElementPtrInst &GEPI) {
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if (!GEPI.hasAllConstantIndices())
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return false;
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PHINode *PHI = cast<PHINode>(GEPI.getPointerOperand());
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if (GEPI.getParent() != PHI->getParent() ||
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llvm::any_of(PHI->incoming_values(), [](Value *In)
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{ Instruction *I = dyn_cast<Instruction>(In);
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return !I || isa<GetElementPtrInst>(I) || isa<PHINode>(I) ||
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!I->getParent()->isLegalToHoistInto();
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}))
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return false;
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LLVM_DEBUG(dbgs() << " Rewriting gep(phi) -> phi(gep):"
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<< "\n original: " << *PHI
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<< "\n " << GEPI
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<< "\n to: ");
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SmallVector<Value *, 4> Index(GEPI.idx_begin(), GEPI.idx_end());
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bool IsInBounds = GEPI.isInBounds();
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IRBuilderTy PHIBuilder(GEPI.getParent()->getFirstNonPHI());
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PHINode *NewPN = PHIBuilder.CreatePHI(GEPI.getType(),
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PHI->getNumIncomingValues(),
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PHI->getName() + ".sroa.phi");
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for (unsigned I = 0, E = PHI->getNumIncomingValues(); I != E; ++I) {
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Instruction *In = cast<Instruction>(PHI->getIncomingValue(I));
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IRBuilderTy B(In->getParent(), std::next(In->getIterator()));
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Value *NewVal = IsInBounds
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? B.CreateInBoundsGEP(In, Index, In->getName() + ".sroa.gep")
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: B.CreateGEP(In, Index, In->getName() + ".sroa.gep");
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NewPN->addIncoming(NewVal, PHI->getIncomingBlock(I));
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}
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GEPI.replaceAllUsesWith(NewPN);
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GEPI.eraseFromParent();
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Visited.insert(NewPN);
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enqueueUsers(*NewPN);
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LLVM_DEBUG(for (Value *In : NewPN->incoming_values())
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dbgs() << "\n " << *In;
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dbgs() << "\n " << *NewPN << '\n');
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return true;
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}
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@ -3493,6 +3538,10 @@ private:
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foldGEPSelect(GEPI))
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return true;
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if (isa<PHINode>(GEPI.getPointerOperand()) &&
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foldGEPPhi(GEPI))
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return true;
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enqueueUsers(GEPI);
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return false;
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}
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@ -0,0 +1,421 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -sroa < %s | FileCheck %s
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%pair = type { i32, i32 }
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define i32 @test_sroa_phi_gep(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
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; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
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;
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entry:
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%a = alloca %pair, align 4
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%b = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
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%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
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store i32 1, i32* %gep_a, align 4
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store i32 2, i32* %gep_b, align 4
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br i1 %cond, label %if.then, label %end
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if.then:
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br label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
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%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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define i32 @test_sroa_phi_gep_non_inbound(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep_non_inbound(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
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; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
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;
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entry:
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%a = alloca %pair, align 4
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%b = alloca %pair, align 4
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%gep_a = getelementptr %pair, %pair* %a, i32 0, i32 1
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%gep_b = getelementptr %pair, %pair* %b, i32 0, i32 1
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store i32 1, i32* %gep_a, align 4
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store i32 2, i32* %gep_b, align 4
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br i1 %cond, label %if.then, label %end
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if.then:
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br label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
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%gep = getelementptr %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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define i32 @test_sroa_phi_gep_undef(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep_undef(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ undef, [[IF_THEN]] ]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
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; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: ret i32 [[LOAD]]
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;
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entry:
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%a = alloca %pair, align 4
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br i1 %cond, label %if.then, label %end
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if.then:
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br label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ undef, %if.then ]
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%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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@g = global %pair zeroinitializer, align 4
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define i32 @test_sroa_phi_gep_global(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep_global(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
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; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
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; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ @g, [[IF_THEN]] ]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
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; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: ret i32 [[LOAD]]
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;
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entry:
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%a = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
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store i32 1, i32* %gep_a, align 4
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br i1 %cond, label %if.then, label %end
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if.then:
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br label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ @g, %if.then ]
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%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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define i32 @test_sroa_phi_gep_arg_phi_inspt(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep_arg_phi_inspt(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[I]] = add i32 [[PHI_INSPT]], 1
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; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
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; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ 2, [[FOR]] ]
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; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
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;
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entry:
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%a = alloca %pair, align 4
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%b = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
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%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
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store i32 1, i32* %gep_a, align 4
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store i32 2, i32* %gep_b, align 4
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br i1 %cond, label %for, label %end
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for:
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%phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
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%i = add i32 %phi_inspt, 1
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%loop.cond = icmp ult i32 %i, 10
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br i1 %loop.cond, label %for, label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ %b, %for ]
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%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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define i32 @test_sroa_phi_gep_phi_inspt(i1 %cond) {
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; CHECK-LABEL: @test_sroa_phi_gep_phi_inspt(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
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; CHECK-NEXT: [[B:%.*]] = alloca [[PAIR]], align 4
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; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
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; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
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; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
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; CHECK-NEXT: store i32 2, i32* [[GEP_B]], align 4
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PHI_IN:%.*]] = phi %pair* [ null, [[ENTRY:%.*]] ], [ [[B]], [[FOR]] ]
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; CHECK-NEXT: [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[I:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[I]] = add i32 [[PHI_INSPT]], 1
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; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
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; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY]] ], [ [[PHI_IN]], [[FOR]] ]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
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; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: ret i32 [[LOAD]]
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;
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entry:
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%a = alloca %pair, align 4
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%b = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
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%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
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store i32 1, i32* %gep_a, align 4
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store i32 2, i32* %gep_b, align 4
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br i1 %cond, label %for, label %end
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for:
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%phi_in = phi %pair * [ null, %entry ], [ %b, %for ]
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%phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
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%i = add i32 %phi_inspt, 1
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%loop.cond = icmp ult i32 %i, 10
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br i1 %loop.cond, label %for, label %end
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end:
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%phi = phi %pair* [ %a, %entry], [ %phi_in, %for ]
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%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
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%load = load i32, i32* %gep, align 4
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ret i32 %load
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}
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define i32 @test_sroa_gep_phi_gep(i1 %cond) {
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; CHECK-LABEL: @test_sroa_gep_phi_gep(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A_SROA_0:%.*]] = alloca i32, align 4
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[PHI:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[GEP_FOR:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[I]] = add i32 [[PHI_I]], 1
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; CHECK-NEXT: [[GEP_FOR]] = getelementptr inbounds i32, i32* [[PHI]], i32 0
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; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
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; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI_END:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
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; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[PHI_END]], align 4
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; CHECK-NEXT: ret i32 [[LOAD]]
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;
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entry:
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%a = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
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br i1 %cond, label %for, label %end
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for:
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%phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
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%phi = phi i32* [ %gep_a, %entry], [ %gep_for, %for ]
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%i = add i32 %phi_i, 1
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%gep_for = getelementptr inbounds i32, i32* %phi, i32 0
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%loop.cond = icmp ult i32 %i, 10
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br i1 %loop.cond, label %for, label %end
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end:
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%phi_end = phi i32* [ %gep_a, %entry], [ %phi, %for ]
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%load = load i32, i32* %phi_end, align 4
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ret i32 %load
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}
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define i32 @test_sroa_gep_cast_phi_gep(i1 %cond) {
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; CHECK-LABEL: @test_sroa_gep_cast_phi_gep(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A_SROA_0:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[A_SROA_0_0_GEP_A_1_SROA_CAST2:%.*]] = bitcast i32* [[A_SROA_0]] to float*
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; CHECK-NEXT: [[A_SROA_0_0_GEP_A_1_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
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; CHECK-NEXT: [[A_SROA_0_0_GEP_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
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; CHECK-NEXT: store i32 1065353216, i32* [[A_SROA_0]], align 4
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
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; CHECK: for:
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; CHECK-NEXT: [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_1_SROA_CAST2]], [[ENTRY]] ], [ [[GEP_FOR_2:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[PHI_SROA_PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_SROA_CAST]], [[ENTRY]] ], [ [[GEP_FOR_2_SROA_GEP:%.*]], [[FOR]] ]
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; CHECK-NEXT: [[I]] = add i32 [[PHI_I]], 1
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; CHECK-NEXT: [[GEP_FOR_1:%.*]] = bitcast float* [[PHI_SROA_PHI]] to i32*
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; CHECK-NEXT: [[GEP_FOR_2]] = bitcast i32* [[GEP_FOR_1]] to float*
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; CHECK-NEXT: [[GEP_FOR_2_SROA_GEP]] = getelementptr inbounds float, float* [[GEP_FOR_2]], i32 0
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; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
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; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[PHI_END:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_1_SROA_CAST]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
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; CHECK-NEXT: [[PHI_END_1:%.*]] = bitcast float* [[PHI_END]] to i32*
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; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[PHI_END_1]], align 4
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; CHECK-NEXT: ret i32 [[LOAD]]
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;
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entry:
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%a = alloca %pair, align 4
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%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
|
||||
%gep_a.1 = bitcast i32* %gep_a to float*
|
||||
store float 1.0, float* %gep_a.1, align 4
|
||||
br i1 %cond, label %for, label %end
|
||||
|
||||
for:
|
||||
%phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
|
||||
%phi = phi float* [ %gep_a.1, %entry], [ %gep_for.2, %for ]
|
||||
%i = add i32 %phi_i, 1
|
||||
%gep_for = getelementptr inbounds float, float* %phi, i32 0
|
||||
%gep_for.1 = bitcast float* %gep_for to i32*
|
||||
%gep_for.2 = bitcast i32* %gep_for.1 to float*
|
||||
%loop.cond = icmp ult i32 %i, 10
|
||||
br i1 %loop.cond, label %for, label %end
|
||||
|
||||
end:
|
||||
%phi_end = phi float* [ %gep_a.1, %entry], [ %phi, %for ]
|
||||
%phi_end.1 = bitcast float* %phi_end to i32*
|
||||
%load = load i32, i32* %phi_end.1, align 4
|
||||
ret i32 %load
|
||||
}
|
||||
|
||||
define i32 @test_sroa_invoke_phi_gep(i1 %cond) personality i32 (...)* @__gxx_personality_v0 {
|
||||
; CHECK-LABEL: @test_sroa_invoke_phi_gep(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
|
||||
; CHECK-NEXT: br i1 [[COND:%.*]], label [[CALL:%.*]], label [[END:%.*]]
|
||||
; CHECK: call:
|
||||
; CHECK-NEXT: [[B:%.*]] = invoke %pair* @foo()
|
||||
; CHECK-NEXT: to label [[END]] unwind label [[INVOKE_CATCH:%.*]]
|
||||
; CHECK: end:
|
||||
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[CALL]] ]
|
||||
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
|
||||
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
|
||||
; CHECK-NEXT: ret i32 [[LOAD]]
|
||||
; CHECK: invoke_catch:
|
||||
; CHECK-NEXT: [[RES:%.*]] = landingpad { i8*, i32 }
|
||||
; CHECK-NEXT: catch i8* null
|
||||
; CHECK-NEXT: ret i32 0
|
||||
;
|
||||
entry:
|
||||
%a = alloca %pair, align 4
|
||||
br i1 %cond, label %call, label %end
|
||||
|
||||
call:
|
||||
%b = invoke %pair* @foo()
|
||||
to label %end unwind label %invoke_catch
|
||||
|
||||
end:
|
||||
%phi = phi %pair* [ %a, %entry], [ %b, %call ]
|
||||
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
|
||||
%load = load i32, i32* %gep, align 4
|
||||
ret i32 %load
|
||||
|
||||
invoke_catch:
|
||||
%res = landingpad { i8*, i32 }
|
||||
catch i8* null
|
||||
ret i32 0
|
||||
}
|
||||
|
||||
define i32 @test_sroa_phi_gep_nonconst_idx(i1 %cond, i32 %idx) {
|
||||
; CHECK-LABEL: @test_sroa_phi_gep_nonconst_idx(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
|
||||
; CHECK-NEXT: [[B:%.*]] = alloca [[PAIR]], align 4
|
||||
; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
|
||||
; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
|
||||
; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
|
||||
; CHECK-NEXT: store i32 2, i32* [[GEP_B]], align 4
|
||||
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
|
||||
; CHECK: if.then:
|
||||
; CHECK-NEXT: br label [[END]]
|
||||
; CHECK: end:
|
||||
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[IF_THEN]] ]
|
||||
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 [[IDX:%.*]], i32 1
|
||||
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
|
||||
; CHECK-NEXT: ret i32 [[LOAD]]
|
||||
;
|
||||
entry:
|
||||
%a = alloca %pair, align 4
|
||||
%b = alloca %pair, align 4
|
||||
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
|
||||
%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
|
||||
store i32 1, i32* %gep_a, align 4
|
||||
store i32 2, i32* %gep_b, align 4
|
||||
br i1 %cond, label %if.then, label %end
|
||||
|
||||
if.then:
|
||||
br label %end
|
||||
|
||||
end:
|
||||
%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
|
||||
%gep = getelementptr inbounds %pair, %pair* %phi, i32 %idx, i32 1
|
||||
%load = load i32, i32* %gep, align 4
|
||||
ret i32 %load
|
||||
}
|
||||
|
||||
define void @test_sroa_gep_phi_select_other_block() {
|
||||
; CHECK-LABEL: @test_sroa_gep_phi_select_other_block(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [[PAIR:%.*]], align 8
|
||||
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
|
||||
; CHECK: while.body:
|
||||
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[ALLOCA]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[WHILE_BODY]] ]
|
||||
; CHECK-NEXT: [[SELECT]] = select i1 undef, %pair* [[PHI]], %pair* undef
|
||||
; CHECK-NEXT: br i1 undef, label [[EXIT:%.*]], label [[WHILE_BODY]]
|
||||
; CHECK: exit:
|
||||
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i64 1
|
||||
; CHECK-NEXT: unreachable
|
||||
;
|
||||
entry:
|
||||
%alloca = alloca %pair, align 8
|
||||
br label %while.body
|
||||
|
||||
while.body:
|
||||
%phi = phi %pair* [ %alloca, %entry ], [ %select, %while.body ]
|
||||
%select = select i1 undef, %pair* %phi, %pair* undef
|
||||
br i1 undef, label %exit, label %while.body
|
||||
|
||||
exit:
|
||||
%gep = getelementptr inbounds %pair, %pair* %phi, i64 1
|
||||
unreachable
|
||||
}
|
||||
|
||||
define void @test_sroa_gep_phi_select_same_block() {
|
||||
; CHECK-LABEL: @test_sroa_gep_phi_select_same_block(
|
||||
; CHECK-NEXT: entry:
|
||||
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [[PAIR:%.*]], align 8
|
||||
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
|
||||
; CHECK: while.body:
|
||||
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[ALLOCA]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[WHILE_BODY]] ]
|
||||
; CHECK-NEXT: [[SELECT]] = select i1 undef, %pair* [[PHI]], %pair* undef
|
||||
; CHECK-NEXT: [[PHI_SROA_GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i64 1
|
||||
; CHECK-NEXT: [[SELECT_SROA_SEL:%.*]] = select i1 undef, %pair* [[PHI_SROA_GEP]], %pair* undef
|
||||
; CHECK-NEXT: br i1 undef, label [[EXIT:%.*]], label [[WHILE_BODY]]
|
||||
; CHECK: exit:
|
||||
; CHECK-NEXT: unreachable
|
||||
;
|
||||
entry:
|
||||
%alloca = alloca %pair, align 8
|
||||
br label %while.body
|
||||
|
||||
while.body:
|
||||
%phi = phi %pair* [ %alloca, %entry ], [ %select, %while.body ]
|
||||
%select = select i1 undef, %pair* %phi, %pair* undef
|
||||
%gep = getelementptr inbounds %pair, %pair* %select, i64 1
|
||||
br i1 undef, label %exit, label %while.body
|
||||
|
||||
exit:
|
||||
unreachable
|
||||
}
|
||||
|
||||
declare %pair* @foo()
|
||||
|
||||
declare i32 @__gxx_personality_v0(...)
|
||||
Loading…
Reference in New Issue