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[flang] implement sizeof lowering for polymorphic entities #84498

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Merged
merged 1 commit into from
Mar 12, 2024
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[flang] implement sizeof lowering for polymorphic entities #84498

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1 change: 1 addition & 0 deletions flang/include/flang/Optimizer/Builder/IntrinsicCall.h
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Original file line number Diff line number Diff line change
Expand Up @@ -338,6 +338,7 @@ struct IntrinsicLibrary {
mlir::Value genSign(mlir::Type, llvm::ArrayRef<mlir::Value>);
mlir::Value genSind(mlir::Type, llvm::ArrayRef<mlir::Value>);
fir::ExtendedValue genSize(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
fir::ExtendedValue genSizeOf(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
mlir::Value genSpacing(mlir::Type resultType,
llvm::ArrayRef<mlir::Value> args);
fir::ExtendedValue genSpread(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
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18 changes: 18 additions & 0 deletions flang/lib/Optimizer/Builder/IntrinsicCall.cpp
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Expand Up @@ -567,6 +567,10 @@ static constexpr IntrinsicHandler handlers[]{
{"dim", asAddr, handleDynamicOptional},
{"kind", asValue}}},
/*isElemental=*/false},
{"sizeof",
&I::genSizeOf,
{{{"a", asBox}}},
/*isElemental=*/false},
{"sleep", &I::genSleep, {{{"seconds", asValue}}}, /*isElemental=*/false},
{"spacing", &I::genSpacing},
{"spread",
Expand Down Expand Up @@ -5946,6 +5950,20 @@ IntrinsicLibrary::genSize(mlir::Type resultType,
.getResults()[0];
}

// SIZEOF
fir::ExtendedValue
IntrinsicLibrary::genSizeOf(mlir::Type resultType,
llvm::ArrayRef<fir::ExtendedValue> args) {
assert(args.size() == 1);
mlir::Value box = fir::getBase(args[0]);
mlir::Value eleSize = builder.create<fir::BoxEleSizeOp>(loc, resultType, box);
if (!fir::isArray(args[0]))
return eleSize;
mlir::Value arraySize = builder.createConvert(
loc, resultType, fir::runtime::genSize(builder, loc, box));
return builder.create<mlir::arith::MulIOp>(loc, eleSize, arraySize);
}

// TAND
mlir::Value IntrinsicLibrary::genTand(mlir::Type resultType,
llvm::ArrayRef<mlir::Value> args) {
Expand Down
23 changes: 23 additions & 0 deletions flang/test/Lower/Intrinsics/sizeof.f90
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@@ -0,0 +1,23 @@
! Test SIZEOF lowering for polymorphic entities.
! RUN: bbc -emit-hlfir --polymorphic-type -o - %s | FileCheck %s

integer(8) function test1(x)
class(*) :: x
test1 = sizeof(x)
end function
! CHECK-LABEL: func.func @_QPtest1(
! CHECK: %[[VAL_3:.*]]:2 = hlfir.declare %{{.*}} {uniq_name = "_QFtest1Ex"} : (!fir.class<none>) -> (!fir.class<none>, !fir.class<none>)
! CHECK: %[[VAL_4:.*]] = fir.box_elesize %[[VAL_3]]#1 : (!fir.class<none>) -> i64
! CHECK: hlfir.assign %[[VAL_4]] to %{{.*}} : i64, !fir.ref<i64>

integer(8) function test2(x)
class(*) :: x(:, :)
test2 = sizeof(x)
end function
! CHECK-LABEL: func.func @_QPtest2(
! CHECK: %[[VAL_3:.*]]:2 = hlfir.declare %{{.*}} {uniq_name = "_QFtest2Ex"} : (!fir.class<!fir.array<?x?xnone>>) -> (!fir.class<!fir.array<?x?xnone>>, !fir.class<!fir.array<?x?xnone>>)
! CHECK: %[[VAL_4:.*]] = fir.box_elesize %[[VAL_3]]#1 : (!fir.class<!fir.array<?x?xnone>>) -> i64
! CHECK: %[[VAL_7:.*]] = fir.convert %[[VAL_3]]#1 : (!fir.class<!fir.array<?x?xnone>>) -> !fir.box<none>
! CHECK: %[[VAL_9:.*]] = fir.call @_FortranASize(%[[VAL_7]], %{{.*}}, %{{.*}}) fastmath<contract> : (!fir.box<none>, !fir.ref<i8>, i32) -> i64
! CHECK: %[[VAL_10:.*]] = arith.muli %[[VAL_4]], %[[VAL_9]] : i64
! CHECK: hlfir.assign %[[VAL_10]] to %{{.*}} : i64, !fir.ref<i64>