diff --git a/flang/lib/Optimizer/Analysis/AliasAnalysis.cpp b/flang/lib/Optimizer/Analysis/AliasAnalysis.cpp index 5827d1c3c529e..873758487ddd0 100644 --- a/flang/lib/Optimizer/Analysis/AliasAnalysis.cpp +++ b/flang/lib/Optimizer/Analysis/AliasAnalysis.cpp @@ -51,14 +51,22 @@ static bool hasGlobalOpTargetAttr(mlir::Value v, fir::AddrOfOp op) { v, fir::GlobalOp::getTargetAttrName(globalOpName)); } -static mlir::Value getOriginalDef(mlir::Value v) { +static mlir::Value +getOriginalDef(mlir::Value v, + fir::AliasAnalysis::Source::Attributes &attributes, + bool &isCapturedInInternalProcedure) { mlir::Operation *defOp; bool breakFromLoop = false; while (!breakFromLoop && (defOp = v.getDefiningOp())) { llvm::TypeSwitch(defOp) .Case([&](fir::ConvertOp op) { v = op.getValue(); }) - .Case( - [&](auto op) { v = op.getMemref(); }) + .Case([&](auto op) { + v = op.getMemref(); + auto varIf = llvm::cast(defOp); + attributes |= getAttrsFromVariable(varIf); + isCapturedInInternalProcedure |= + varIf.isCapturedInInternalProcedure(); + }) .Default([&](auto op) { breakFromLoop = true; }); } return v; @@ -600,7 +608,8 @@ AliasAnalysis::Source AliasAnalysis::getSource(mlir::Value v, if (mlir::isa(boxTy.getEleTy())) attributes.set(Attribute::Pointer); - auto def = getOriginalDef(op.getMemref()); + auto def = getOriginalDef(op.getMemref(), attributes, + isCapturedInInternalProcedure); if (auto addrOfOp = def.template getDefiningOp()) { global = addrOfOp.getSymbol(); @@ -609,13 +618,13 @@ AliasAnalysis::Source AliasAnalysis::getSource(mlir::Value v, type = SourceKind::Global; } - - // TODO: Add support to fir.alloca and fir.allocmem - // if (auto allocOp = def.template getDefiningOp()) { - // ... - // } - - if (isDummyArgument(def)) { + // TODO: Add support to fir.allocmem + else if (auto allocOp = + def.template getDefiningOp()) { + v = def; + defOp = v.getDefiningOp(); + type = SourceKind::Allocate; + } else if (isDummyArgument(def)) { defOp = nullptr; v = def; } diff --git a/flang/test/Analysis/AliasAnalysis/alias-analysis-2.fir b/flang/test/Analysis/AliasAnalysis/alias-analysis-2.fir index 24cfaf6ed7ecc..b4c757f2d0b4e 100644 --- a/flang/test/Analysis/AliasAnalysis/alias-analysis-2.fir +++ b/flang/test/Analysis/AliasAnalysis/alias-analysis-2.fir @@ -8,9 +8,11 @@ // They cannot physically alias // CHECK-DAG: p1.addr#0 <-> p2.addr#0: NoAlias -// p1.addr and p2.addr could both be wrapped inside boxes -// CHECK-DAG: p1.addr#0 <-> boxp1.addr#0: MayAlias -// CHECK-DAG: p2.addr#0 <-> boxp1.addr#0: MayAlias +// p1.addr is the address returned by an alloca. It does not have a target +// attribute, and it is not the address retrieved from a pointer. It cannot +// alias anything. Likewise for p2.addr. +// CHECK-DAG: p1.addr#0 <-> boxp1.addr#0: NoAlias +// CHECK-DAG: p2.addr#0 <-> boxp1.addr#0: NoAlias // TODO: To really see aliasing, we should be looking at a load of p1.addr // p1.addr is just a local address holding the address to the data @@ -27,10 +29,11 @@ // CHECK-DAG: p2.addr#0 <-> func.region0#2: NoAlias // All arguments are either pointers or targets -// A pointer in a box may alias with both +// The address *in* a local pointer may alias the address of a target +// argument, but it does not alias the address *of* a pointer argument. // CHECK-DAG: boxp1.addr#0 <-> func.region0#0: MayAlias // CHECK-DAG: boxp1.addr#0 <-> func.region0#1: MayAlias -// CHECK-DAG: boxp1.addr#0 <-> func.region0#2: MayAlias +// CHECK-DAG: boxp1.addr#0 <-> func.region0#2: NoAlias // A target dummy may alias with another target // CHECK-DAG: func.region0#0 <-> func.region0#1: MayAlias @@ -54,7 +57,7 @@ // The addresses stored in two different pointers can alias, even if one has no // box. In this program, they happen to be the same address. -// T4: +// T4 from . // CHECK-DAG: p1.tgt#0 <-> boxp1.addr#0: MayAlias func.func @_QFPtest(%arg0: !fir.ref {fir.bindc_name = "v1", fir.target}, %arg1: !fir.ref {fir.bindc_name = "v2", fir.target}, %arg2: !fir.ref>> ) attributes {test.ptr = "func"} { diff --git a/flang/test/Analysis/AliasAnalysis/load-ptr-alloca.fir b/flang/test/Analysis/AliasAnalysis/load-ptr-alloca.fir new file mode 100644 index 0000000000000..56c5313d397a5 --- /dev/null +++ b/flang/test/Analysis/AliasAnalysis/load-ptr-alloca.fir @@ -0,0 +1,412 @@ +// Check aliasing with the address *in* (not *of*) a local (fir.alloca) pointer +// variable. +// +// Throughout this test, the ".fir" suffix on symbols indicates a version of the +// MLIR after convert-hlfir-to-fir. We would like alias analysis results to be +// the same in both versions. + +// RUN: fir-opt %s -split-input-file -o /dev/null --mlir-disable-threading \ +// RUN: -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis))' \ +// RUN: 2>&1 | FileCheck -match-full-lines %s + +// subroutine test(n) +// integer :: n +// real, pointer :: p0, p1 +// real :: arr(n) +// real, target :: t_arr(n) +// real, allocatable :: alloc +// real, allocatable, target :: t_alloc +// real, target :: t +// real :: v +// end subroutine test + +// CHECK-LABEL: Testing : "_QPtest" + +// The address in a pointer can alias the address in another pointer or the +// address of a target but not the address of other variables. +// CHECK-DAG: p0.tgt#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p0.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: v#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: v#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p0.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: v.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: v.fir#0 <-> p1.tgt.fir#0: NoAlias + +// The address in a pointer cannot alias the address of a pointer. +// CHECK-DAG: p0#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p0#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p1.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p1.tgt.fir#0: NoAlias + +// For some cases, AliasAnalysis analyzes hlfir.designate like fir.box_addr, so +// make sure it doesn't mistakenly see the address of arr(1) as an address that +// was loaded from a pointer and that could alias something. However, t_arr is +// a target. +// CHECK-DAG: p0.tgt#0 <-> arr(1)#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_arr(1)#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> arr(1).fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_arr(1).fir#0: MayAlias + +// Like a pointer, an allocatable contains an address, but an allocatable is not +// a pointer and so cannot alias pointers. However, t_alloc is a target. +// CHECK-DAG: p0.tgt#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_alloc.tgt#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> alloc.tgt.fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_alloc.tgt.fir#0: MayAlias + +// The address in an allocatable cannot alias the address of that allocatable. +// CHECK-DAG: alloc#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: alloc.fir#0 <-> alloc.tgt.fir#0: NoAlias + +func.func @_QPtest(%arg0: !fir.ref {fir.bindc_name = "n"}) { + %0 = fir.alloca !fir.box> {bindc_name = "alloc", uniq_name = "_QFtestEalloc"} + %1:2 = hlfir.declare %0 {test.ptr="alloc", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEalloc"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %2:2 = hlfir.declare %arg0 {uniq_name = "_QFtestEn"} : (!fir.ref) -> (!fir.ref, !fir.ref) + %3 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QFtestEp0"} + %4:2 = hlfir.declare %3 {test.ptr="p0", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp0"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %5 = fir.alloca !fir.box> {bindc_name = "p1", uniq_name = "_QFtestEp1"} + %6:2 = hlfir.declare %5 {test.ptr="p1", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp1"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %7 = fir.alloca f32 {bindc_name = "t", fir.target, uniq_name = "_QFtestEt"} + %8:2 = hlfir.declare %7 {test.ptr="t", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt"} : (!fir.ref) -> (!fir.ref, !fir.ref) + %9 = fir.alloca !fir.box> {bindc_name = "t_alloc", fir.target, uniq_name = "_QFtestEt_alloc"} + %10:2 = hlfir.declare %9 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_alloc"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %11 = fir.alloca f32 {bindc_name = "v", uniq_name = "_QFtestEv"} + %12:2 = hlfir.declare %11 {test.ptr="v", uniq_name = "_QFtestEv"} : (!fir.ref) -> (!fir.ref, !fir.ref) + %13 = fir.load %2#0 : !fir.ref + %14 = fir.convert %13 : (i32) -> i64 + %15 = fir.convert %14 : (i64) -> index + %c0 = arith.constant 0 : index + %16 = arith.cmpi sgt, %15, %c0 : index + %17 = arith.select %16, %15, %c0 : index + %18 = fir.alloca !fir.array, %17 {bindc_name = "arr", uniq_name = "_QFtestEarr"} + %19 = fir.shape %17 : (index) -> !fir.shape<1> + %20:2 = hlfir.declare %18(%19) {uniq_name = "_QFtestEarr"} : (!fir.ref>, !fir.shape<1>) -> (!fir.box>, !fir.ref>) + %21 = fir.load %2#0 : !fir.ref + %22 = fir.convert %21 : (i32) -> i64 + %23 = fir.convert %22 : (i64) -> index + %c0_0 = arith.constant 0 : index + %24 = arith.cmpi sgt, %23, %c0_0 : index + %25 = arith.select %24, %23, %c0_0 : index + %26 = fir.alloca !fir.array, %25 {bindc_name = "t_arr", fir.target, uniq_name = "_QFtestEt_arr"} + %27 = fir.shape %25 : (index) -> !fir.shape<1> + %28:2 = hlfir.declare %26(%27) {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_arr"} : (!fir.ref>, !fir.shape<1>) -> (!fir.box>, !fir.ref>) + %29 = fir.load %4#0 : !fir.ref>> + %30 = fir.box_addr %29 {test.ptr="p0.tgt"} : (!fir.box>) -> !fir.ptr + %31 = fir.load %6#0 : !fir.ref>> + %32 = fir.box_addr %31 {test.ptr="p1.tgt"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %33 = hlfir.designate %20#0 (%c1) {test.ptr="arr(1)"} : (!fir.box>, index) -> !fir.ref + %c1_1 = arith.constant 1 : index + %34 = hlfir.designate %28#0 (%c1_1) {test.ptr="t_arr(1)"} : (!fir.box>, index) -> !fir.ref + %35 = fir.load %1#0 : !fir.ref>> + %36 = fir.box_addr %35 {test.ptr="alloc.tgt"} : (!fir.box>) -> !fir.heap + %37 = fir.load %10#0 : !fir.ref>> + %38 = fir.box_addr %37 {test.ptr="t_alloc.tgt"} : (!fir.box>) -> !fir.heap + return +} + +func.func @_QPtest.fir(%arg0: !fir.ref {fir.bindc_name = "n"}) { + %0 = fir.alloca !fir.box> {bindc_name = "alloc", uniq_name = "_QFtestEalloc"} + %1 = fir.declare %0 {test.ptr = "alloc.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEalloc"} : (!fir.ref>>) -> !fir.ref>> + %2 = fir.declare %arg0 {uniq_name = "_QFtestEn"} : (!fir.ref) -> !fir.ref + %3 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QFtestEp0"} + %4 = fir.declare %3 {test.ptr = "p0.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp0"} : (!fir.ref>>) -> !fir.ref>> + %5 = fir.alloca !fir.box> {bindc_name = "p1", uniq_name = "_QFtestEp1"} + %6 = fir.declare %5 {test.ptr = "p1.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp1"} : (!fir.ref>>) -> !fir.ref>> + %7 = fir.alloca f32 {bindc_name = "t", fir.target, uniq_name = "_QFtestEt"} + %8 = fir.declare %7 {test.ptr = "t.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt"} : (!fir.ref) -> !fir.ref + %9 = fir.alloca !fir.box> {bindc_name = "t_alloc", fir.target, uniq_name = "_QFtestEt_alloc"} + %10 = fir.declare %9 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_alloc"} : (!fir.ref>>) -> !fir.ref>> + %11 = fir.alloca f32 {bindc_name = "v", uniq_name = "_QFtestEv"} + %12 = fir.declare %11 {test.ptr = "v.fir", uniq_name = "_QFtestEv"} : (!fir.ref) -> !fir.ref + %13 = fir.load %2 : !fir.ref + %14 = fir.convert %13 : (i32) -> i64 + %15 = fir.convert %14 : (i64) -> index + %c0 = arith.constant 0 : index + %16 = arith.cmpi sgt, %15, %c0 : index + %17 = arith.select %16, %15, %c0 : index + %18 = fir.alloca !fir.array, %17 {bindc_name = "arr", uniq_name = "_QFtestEarr"} + %19 = fir.shape %17 : (index) -> !fir.shape<1> + %20 = fir.declare %18(%19) {uniq_name = "_QFtestEarr"} : (!fir.ref>, !fir.shape<1>) -> !fir.ref> + %21 = fir.embox %20(%19) : (!fir.ref>, !fir.shape<1>) -> !fir.box> + %22 = fir.load %2 : !fir.ref + %23 = fir.convert %22 : (i32) -> i64 + %24 = fir.convert %23 : (i64) -> index + %c0_0 = arith.constant 0 : index + %25 = arith.cmpi sgt, %24, %c0_0 : index + %26 = arith.select %25, %24, %c0_0 : index + %27 = fir.alloca !fir.array, %26 {bindc_name = "t_arr", fir.target, uniq_name = "_QFtestEt_arr"} + %28 = fir.shape %26 : (index) -> !fir.shape<1> + %29 = fir.declare %27(%28) {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_arr"} : (!fir.ref>, !fir.shape<1>) -> !fir.ref> + %30 = fir.embox %29(%28) : (!fir.ref>, !fir.shape<1>) -> !fir.box> + %31 = fir.load %4 : !fir.ref>> + %32 = fir.box_addr %31 {test.ptr = "p0.tgt.fir"} : (!fir.box>) -> !fir.ptr + %33 = fir.load %6 : !fir.ref>> + %34 = fir.box_addr %33 {test.ptr = "p1.tgt.fir"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %35 = fir.array_coor %20(%19) %c1 {test.ptr="arr(1).fir"} : (!fir.ref>, !fir.shape<1>, index) -> !fir.ref + %c1_1 = arith.constant 1 : index + %36 = fir.array_coor %29(%28) %c1_1 {test.ptr="t_arr(1).fir"} : (!fir.ref>, !fir.shape<1>, index) -> !fir.ref + %37 = fir.load %1 : !fir.ref>> + %38 = fir.box_addr %37 {test.ptr = "alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + %39 = fir.load %10 : !fir.ref>> + %40 = fir.box_addr %39 {test.ptr = "t_alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + return +} + +// ----- + +// Repeat above test except compare the local pointer against dummy args instead +// of other locals. + +// subroutine test(p1, arr, t_arr, alloc, t_alloc, t, v) +// real, pointer :: p1 +// real :: arr(:) +// real, target :: t_arr(:) +// real, allocatable :: alloc +// real, allocatable, target :: t_alloc +// real, target :: t +// real :: v +// real, pointer :: p0 +// end subroutine test + +// CHECK-LABEL: Testing : "_QPtest" + +// The address in a pointer can alias the address in another pointer or the +// address of a target but not the address of other variables. +// CHECK-DAG: p0.tgt#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p0.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: v#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: v#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p0.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: v.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: v.fir#0 <-> p1.tgt.fir#0: NoAlias + +// The address in a pointer cannot alias the address of a pointer. +// CHECK-DAG: p0#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p0#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p1.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p1.tgt.fir#0: NoAlias + +// For some cases, AliasAnalysis analyzes hlfir.designate like fir.box_addr, so +// make sure it doesn't mistakenly see the address of arr(1) as an address that +// was loaded from a pointer and that could alias something. However, t_arr is +// a target. +// CHECK-DAG: p0.tgt#0 <-> arr(1)#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_arr(1)#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> arr(1).fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_arr(1).fir#0: MayAlias + +// Like a pointer, an allocatable contains an address, but an allocatable is not +// a pointer and so cannot alias pointers. However, t_alloc is a target. +// CHECK-DAG: p0.tgt#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_alloc.tgt#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> alloc.tgt.fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_alloc.tgt.fir#0: MayAlias + +// The address in an allocatable cannot alias the address of that allocatable. +// CHECK-DAG: alloc#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: alloc.fir#0 <-> alloc.tgt.fir#0: NoAlias + +func.func @_QPtest(%arg0: !fir.ref>> {fir.bindc_name = "p1"}, %arg1: !fir.box> {fir.bindc_name = "arr"}, %arg2: !fir.box> {fir.bindc_name = "t_arr", fir.target}, %arg3: !fir.ref>> {fir.bindc_name = "alloc"}, %arg4: !fir.ref>> {fir.bindc_name = "t_alloc", fir.target}, %arg5: !fir.ref {fir.bindc_name = "t", fir.target}, %arg6: !fir.ref {fir.bindc_name = "v"}) { + %0 = fir.dummy_scope : !fir.dscope + %1:2 = hlfir.declare %arg3 dummy_scope %0 {test.ptr="alloc", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEalloc"} : (!fir.ref>>, !fir.dscope) -> (!fir.ref>>, !fir.ref>>) + %2:2 = hlfir.declare %arg1 dummy_scope %0 {uniq_name = "_QFtestEarr"} : (!fir.box>, !fir.dscope) -> (!fir.box>, !fir.box>) + %3 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QFtestEp0"} + %4:2 = hlfir.declare %3 {test.ptr="p0", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp0"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %5:2 = hlfir.declare %arg0 dummy_scope %0 {test.ptr="p1", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp1"} : (!fir.ref>>, !fir.dscope) -> (!fir.ref>>, !fir.ref>>) + %6:2 = hlfir.declare %arg5 dummy_scope %0 {test.ptr="t", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt"} : (!fir.ref, !fir.dscope) -> (!fir.ref, !fir.ref) + %7:2 = hlfir.declare %arg4 dummy_scope %0 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_alloc"} : (!fir.ref>>, !fir.dscope) -> (!fir.ref>>, !fir.ref>>) + %8:2 = hlfir.declare %arg2 dummy_scope %0 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_arr"} : (!fir.box>, !fir.dscope) -> (!fir.box>, !fir.box>) + %9:2 = hlfir.declare %arg6 dummy_scope %0 {test.ptr="v", uniq_name = "_QFtestEv"} : (!fir.ref, !fir.dscope) -> (!fir.ref, !fir.ref) + %10 = fir.load %4#0 : !fir.ref>> + %11 = fir.box_addr %10 {test.ptr="p0.tgt"} : (!fir.box>) -> !fir.ptr + %12 = fir.load %5#0 : !fir.ref>> + %13 = fir.box_addr %12 {test.ptr="p1.tgt"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %14 = hlfir.designate %2#0 (%c1) {test.ptr="arr(1)"} : (!fir.box>, index) -> !fir.ref + %c1_0 = arith.constant 1 : index + %15 = hlfir.designate %8#0 (%c1_0) {test.ptr="t_arr(1)"} : (!fir.box>, index) -> !fir.ref + %16 = fir.load %1#0 : !fir.ref>> + %17 = fir.box_addr %16 {test.ptr="alloc.tgt"} : (!fir.box>) -> !fir.heap + %18 = fir.load %7#0 : !fir.ref>> + %19 = fir.box_addr %18 {test.ptr="t_alloc.tgt"} : (!fir.box>) -> !fir.heap + return +} + +func.func @_QPtest.fir(%arg0: !fir.ref>> {fir.bindc_name = "p1"}, %arg1: !fir.box> {fir.bindc_name = "arr"}, %arg2: !fir.box> {fir.bindc_name = "t_arr", fir.target}, %arg3: !fir.ref>> {fir.bindc_name = "alloc"}, %arg4: !fir.ref>> {fir.bindc_name = "t_alloc", fir.target}, %arg5: !fir.ref {fir.bindc_name = "t", fir.target}, %arg6: !fir.ref {fir.bindc_name = "v"}) { + %0 = fir.dummy_scope : !fir.dscope + %1 = fir.declare %arg3 dummy_scope %0 {test.ptr = "alloc.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEalloc"} : (!fir.ref>>, !fir.dscope) -> !fir.ref>> + %2 = fir.declare %arg1 dummy_scope %0 {uniq_name = "_QFtestEarr"} : (!fir.box>, !fir.dscope) -> !fir.box> + %3 = fir.rebox %2 : (!fir.box>) -> !fir.box> + %4 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QFtestEp0"} + %5 = fir.declare %4 {test.ptr = "p0.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp0"} : (!fir.ref>>) -> !fir.ref>> + %6 = fir.declare %arg0 dummy_scope %0 {test.ptr = "p1.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEp1"} : (!fir.ref>>, !fir.dscope) -> !fir.ref>> + %7 = fir.declare %arg5 dummy_scope %0 {test.ptr = "t.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt"} : (!fir.ref, !fir.dscope) -> !fir.ref + %8 = fir.declare %arg4 dummy_scope %0 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_alloc"} : (!fir.ref>>, !fir.dscope) -> !fir.ref>> + %9 = fir.declare %arg2 dummy_scope %0 {fortran_attrs = #fir.var_attrs, uniq_name = "_QFtestEt_arr"} : (!fir.box>, !fir.dscope) -> !fir.box> + %10 = fir.rebox %9 : (!fir.box>) -> !fir.box> + %11 = fir.declare %arg6 dummy_scope %0 {test.ptr = "v.fir", uniq_name = "_QFtestEv"} : (!fir.ref, !fir.dscope) -> !fir.ref + %12 = fir.load %5 : !fir.ref>> + %13 = fir.box_addr %12 {test.ptr = "p0.tgt.fir"} : (!fir.box>) -> !fir.ptr + %14 = fir.load %6 : !fir.ref>> + %15 = fir.box_addr %14 {test.ptr = "p1.tgt.fir"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %16 = fir.array_coor %3 %c1 {test.ptr="arr(1).fir"} : (!fir.box>, index) -> !fir.ref + %c1_0 = arith.constant 1 : index + %17 = fir.array_coor %10 %c1_0 {test.ptr="t_arr(1).fir"} : (!fir.box>, index) -> !fir.ref + %18 = fir.load %1 : !fir.ref>> + %19 = fir.box_addr %18 {test.ptr = "alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + %20 = fir.load %8 : !fir.ref>> + %21 = fir.box_addr %20 {test.ptr = "t_alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + return +} + +// ----- + +// Repeat above test except compare the local pointer against globals. + +// module m +// real, pointer :: p1 +// real :: arr(2) +// real, target :: t_arr(2) +// real, allocatable :: alloc +// real, allocatable, target :: t_alloc +// real, target :: t +// real :: v +// contains +// subroutine test() +// real, pointer :: p0 +// end subroutine test +// end module m + +// CHECK-LABEL: Testing : "_QMmPtest" + +// The address in a pointer can alias the address in another pointer or the +// address of a target but not the address of other variables. +// CHECK-DAG: p0.tgt#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p0.tgt#0: MayAlias +// CHECK-DAG: t#0 <-> p1.tgt#0: MayAlias +// CHECK-DAG: v#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: v#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p0.tgt.fir#0: MayAlias +// CHECK-DAG: t.fir#0 <-> p1.tgt.fir#0: MayAlias +// CHECK-DAG: v.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: v.fir#0 <-> p1.tgt.fir#0: NoAlias + +// The address in a pointer cannot alias the address of a pointer. +// CHECK-DAG: p0#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p0#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p0.tgt#0: NoAlias +// CHECK-DAG: p1#0 <-> p1.tgt#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p0.fir#0 <-> p1.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p0.tgt.fir#0: NoAlias +// CHECK-DAG: p1.fir#0 <-> p1.tgt.fir#0: NoAlias + +// For some cases, AliasAnalysis analyzes hlfir.designate like fir.box_addr, so +// make sure it doesn't mistakenly see the address of arr(1) as an address that +// was loaded from a pointer and that could alias something. However, t_arr is +// a target. +// CHECK-DAG: p0.tgt#0 <-> arr(1)#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_arr(1)#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> arr(1).fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_arr(1).fir#0: MayAlias + +// Like a pointer, an allocatable contains an address, but an allocatable is not +// a pointer and so cannot alias pointers. However, t_alloc is a target. +// CHECK-DAG: p0.tgt#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: p0.tgt#0 <-> t_alloc.tgt#0: MayAlias +// CHECK-DAG: p0.tgt.fir#0 <-> alloc.tgt.fir#0: NoAlias +// CHECK-DAG: p0.tgt.fir#0 <-> t_alloc.tgt.fir#0: MayAlias + +// The address in an allocatable cannot alias the address of that allocatable. +// CHECK-DAG: alloc#0 <-> alloc.tgt#0: NoAlias +// CHECK-DAG: alloc.fir#0 <-> alloc.tgt.fir#0: NoAlias + +func.func @_QMmPtest() { + %0 = fir.address_of(@_QMmEalloc) : !fir.ref>> + %1:2 = hlfir.declare %0 {test.ptr="alloc", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEalloc"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %2 = fir.address_of(@_QMmEarr) : !fir.ref> + %c2 = arith.constant 2 : index + %3 = fir.shape %c2 : (index) -> !fir.shape<1> + %4:2 = hlfir.declare %2(%3) {uniq_name = "_QMmEarr"} : (!fir.ref>, !fir.shape<1>) -> (!fir.ref>, !fir.ref>) + %5 = fir.address_of(@_QMmEp1) : !fir.ref>> + %6:2 = hlfir.declare %5 {test.ptr="p1", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEp1"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %7 = fir.address_of(@_QMmEt) : !fir.ref + %8:2 = hlfir.declare %7 {test.ptr="t", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt"} : (!fir.ref) -> (!fir.ref, !fir.ref) + %9 = fir.address_of(@_QMmEt_alloc) : !fir.ref>> + %10:2 = hlfir.declare %9 {fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt_alloc"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %11 = fir.address_of(@_QMmEt_arr) : !fir.ref> + %c2_0 = arith.constant 2 : index + %12 = fir.shape %c2_0 : (index) -> !fir.shape<1> + %13:2 = hlfir.declare %11(%12) {fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt_arr"} : (!fir.ref>, !fir.shape<1>) -> (!fir.ref>, !fir.ref>) + %14 = fir.address_of(@_QMmEv) : !fir.ref + %15:2 = hlfir.declare %14 {test.ptr="v", uniq_name = "_QMmEv"} : (!fir.ref) -> (!fir.ref, !fir.ref) + %16 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QMmFtestEp0"} + %17:2 = hlfir.declare %16 {test.ptr="p0", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmFtestEp0"} : (!fir.ref>>) -> (!fir.ref>>, !fir.ref>>) + %18 = fir.load %17#0 : !fir.ref>> + %19 = fir.box_addr %18 {test.ptr="p0.tgt"} : (!fir.box>) -> !fir.ptr + %20 = fir.load %6#0 : !fir.ref>> + %21 = fir.box_addr %20 {test.ptr="p1.tgt"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %22 = hlfir.designate %4#0 (%c1) {test.ptr="arr(1)"} : (!fir.ref>, index) -> !fir.ref + %c1_1 = arith.constant 1 : index + %23 = hlfir.designate %13#0 (%c1_1) {test.ptr="t_arr(1)"} : (!fir.ref>, index) -> !fir.ref + %24 = fir.load %1#0 : !fir.ref>> + %25 = fir.box_addr %24 {test.ptr="alloc.tgt"} : (!fir.box>) -> !fir.heap + %26 = fir.load %10#0 : !fir.ref>> + %27 = fir.box_addr %26 {test.ptr="t_alloc.tgt"} : (!fir.box>) -> !fir.heap + return +} + +func.func @_QMmPtest.fir() { + %0 = fir.address_of(@_QMmEalloc) : !fir.ref>> + %1 = fir.declare %0 {test.ptr = "alloc.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEalloc"} : (!fir.ref>>) -> !fir.ref>> + %2 = fir.address_of(@_QMmEarr) : !fir.ref> + %c2 = arith.constant 2 : index + %3 = fir.shape %c2 : (index) -> !fir.shape<1> + %4 = fir.declare %2(%3) {uniq_name = "_QMmEarr"} : (!fir.ref>, !fir.shape<1>) -> !fir.ref> + %5 = fir.address_of(@_QMmEp1) : !fir.ref>> + %6 = fir.declare %5 {test.ptr = "p1.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEp1"} : (!fir.ref>>) -> !fir.ref>> + %7 = fir.address_of(@_QMmEt) : !fir.ref + %8 = fir.declare %7 {test.ptr = "t.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt"} : (!fir.ref) -> !fir.ref + %9 = fir.address_of(@_QMmEt_alloc) : !fir.ref>> + %10 = fir.declare %9 {fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt_alloc"} : (!fir.ref>>) -> !fir.ref>> + %11 = fir.address_of(@_QMmEt_arr) : !fir.ref> + %c2_0 = arith.constant 2 : index + %12 = fir.shape %c2_0 : (index) -> !fir.shape<1> + %13 = fir.declare %11(%12) {fortran_attrs = #fir.var_attrs, uniq_name = "_QMmEt_arr"} : (!fir.ref>, !fir.shape<1>) -> !fir.ref> + %14 = fir.address_of(@_QMmEv) : !fir.ref + %15 = fir.declare %14 {test.ptr = "v.fir", uniq_name = "_QMmEv"} : (!fir.ref) -> !fir.ref + %16 = fir.alloca !fir.box> {bindc_name = "p0", uniq_name = "_QMmFtestEp0"} + %17 = fir.declare %16 {test.ptr = "p0.fir", fortran_attrs = #fir.var_attrs, uniq_name = "_QMmFtestEp0"} : (!fir.ref>>) -> !fir.ref>> + %18 = fir.load %17 : !fir.ref>> + %19 = fir.box_addr %18 {test.ptr = "p0.tgt.fir"} : (!fir.box>) -> !fir.ptr + %20 = fir.load %6 : !fir.ref>> + %21 = fir.box_addr %20 {test.ptr = "p1.tgt.fir"} : (!fir.box>) -> !fir.ptr + %c1 = arith.constant 1 : index + %22 = fir.array_coor %4(%3) %c1 {test.ptr="arr(1).fir"} : (!fir.ref>, !fir.shape<1>, index) -> !fir.ref + %c1_1 = arith.constant 1 : index + %23 = fir.array_coor %13(%12) %c1_1 {test.ptr="t_arr(1).fir"} : (!fir.ref>, !fir.shape<1>, index) -> !fir.ref + %24 = fir.load %1 : !fir.ref>> + %25 = fir.box_addr %24 {test.ptr = "alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + %26 = fir.load %10 : !fir.ref>> + %27 = fir.box_addr %26 {test.ptr = "t_alloc.tgt.fir"} : (!fir.box>) -> !fir.heap + return +}