Index: lib/Analysis/LoopAccessAnalysis.cpp =================================================================== --- lib/Analysis/LoopAccessAnalysis.cpp +++ lib/Analysis/LoopAccessAnalysis.cpp @@ -1939,7 +1939,10 @@ Value *NewPtr = (Inst && TheLoop->contains(Inst)) ? Exp.expandCodeFor(Sc, PtrArithTy, Loc) : Ptr; - return {NewPtr, NewPtr}; + // We must return a half-open range, which means incrementing Sc. + const SCEV *ScPlusOne = SE->getAddExpr(Sc, SE->getOne(PtrArithTy)); + Value *NewPtrPlusOne = Exp.expandCodeFor(ScPlusOne, PtrArithTy, Loc); + return {NewPtr, NewPtrPlusOne}; } else { Value *Start = nullptr, *End = nullptr; DEBUG(dbgs() << "LAA: Adding RT check for range:\n"); Index: test/Transforms/LoopVersioning/loop-invariant-bound.ll =================================================================== --- test/Transforms/LoopVersioning/loop-invariant-bound.ll +++ test/Transforms/LoopVersioning/loop-invariant-bound.ll @@ -8,12 +8,13 @@ %Partials.215 = type { [2 x %Dual.213] } ; Function Attrs: sspreq -define void @"julia_axpy!_65480"(%Dual.212*) { +define void @"julia_axpy!_65480"(%Dual.212*, %Dual.212* %other) { top: br label %if24 ; CHECK-NOT: %bc = bitcast i64* %v2.sroa.0.0..sroa_cast -; CHECK: %bound0 +; CHECK: %bound0 = icmp ult i8* %[[x:[a-z0-9]+]], %[[y:[a-z0-9]+]] +; CHECK-NOT: %bound1 = icmp ult i8* %[[y]], %[[x]] if24: ; preds = %if24, %top %"#temp#1.sroa.3.02" = phi i64 [ undef, %top ], [ %2, %if24 ] @@ -24,7 +25,7 @@ %v2.sroa.0.0..sroa_cast = bitcast %Dual.212* %0 to i64* %v2.sroa.0.0.copyload = load i64, i64* %v2.sroa.0.0..sroa_cast, align 1 %3 = add i64 %"#temp#1.sroa.0.01", -1 - %4 = getelementptr inbounds %Dual.212, %Dual.212* undef, i64 %3, i32 1, i32 0, i64 0, i32 1, i32 0, i64 0 + %4 = getelementptr inbounds %Dual.212, %Dual.212* %other, i64 0, i32 1, i32 0, i64 0, i32 1, i32 0, i64 0 %5 = bitcast double* %4 to i64* store i64 undef, i64* %5, align 8 %notlhs27 = icmp eq i64 %2, undef