[flang-commits] [flang] 0ac1dfa - [flang] lower c_f_procpointer (#76071)
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Fri Dec 22 02:01:06 PST 2023
Author: jeanPerier
Date: 2023-12-22T11:01:03+01:00
New Revision: 0ac1dfa31153f3dcb2fcda63e7f198f5682193eb
URL: https://github.com/llvm/llvm-project/commit/0ac1dfa31153f3dcb2fcda63e7f198f5682193eb
DIFF: https://github.com/llvm/llvm-project/commit/0ac1dfa31153f3dcb2fcda63e7f198f5682193eb.diff
LOG: [flang] lower c_f_procpointer (#76071)
This is equivalent to a procedure pointer assignment, except that the
target is a C_FUNPTR.
Added:
flang/test/Lower/Intrinsics/c_f_procpointer.f90
Modified:
flang/include/flang/Optimizer/Builder/IntrinsicCall.h
flang/lib/Optimizer/Builder/IntrinsicCall.cpp
Removed:
################################################################################
diff --git a/flang/include/flang/Optimizer/Builder/IntrinsicCall.h b/flang/include/flang/Optimizer/Builder/IntrinsicCall.h
index ba0c4806c759e1..dba946975e1928 100644
--- a/flang/include/flang/Optimizer/Builder/IntrinsicCall.h
+++ b/flang/include/flang/Optimizer/Builder/IntrinsicCall.h
@@ -202,6 +202,7 @@ struct IntrinsicLibrary {
fir::ExtendedValue genCAssociatedCPtr(mlir::Type,
llvm::ArrayRef<fir::ExtendedValue>);
void genCFPointer(llvm::ArrayRef<fir::ExtendedValue>);
+ void genCFProcPointer(llvm::ArrayRef<fir::ExtendedValue>);
fir::ExtendedValue genCFunLoc(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
fir::ExtendedValue genCLoc(mlir::Type, llvm::ArrayRef<fir::ExtendedValue>);
void genDateAndTime(llvm::ArrayRef<fir::ExtendedValue>);
diff --git a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
index b6d84fb13c2350..c8057fbdd475af 100644
--- a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
+++ b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
@@ -165,6 +165,10 @@ static constexpr IntrinsicHandler handlers[]{
{"fptr", asInquired},
{"shape", asAddr, handleDynamicOptional}}},
/*isElemental=*/false},
+ {"c_f_procpointer",
+ &I::genCFProcPointer,
+ {{{"cptr", asValue}, {"fptr", asInquired}}},
+ /*isElemental=*/false},
{"c_funloc", &I::genCFunLoc, {{{"x", asBox}}}, /*isElemental=*/false},
{"c_loc", &I::genCLoc, {{{"x", asBox}}}, /*isElemental=*/false},
{"ceiling", &I::genCeiling},
@@ -2525,6 +2529,22 @@ void IntrinsicLibrary::genCFPointer(llvm::ArrayRef<fir::ExtendedValue> args) {
/*lbounds=*/mlir::ValueRange{});
}
+// C_F_PROCPOINTER
+void IntrinsicLibrary::genCFProcPointer(
+ llvm::ArrayRef<fir::ExtendedValue> args) {
+ assert(args.size() == 2);
+ mlir::Value cptr =
+ fir::factory::genCPtrOrCFunptrValue(builder, loc, fir::getBase(args[0]));
+ mlir::Value fptr = fir::getBase(args[1]);
+ auto boxProcType =
+ mlir::cast<fir::BoxProcType>(fir::unwrapRefType(fptr.getType()));
+ mlir::Value cptrCast =
+ builder.createConvert(loc, boxProcType.getEleTy(), cptr);
+ mlir::Value cptrBox =
+ builder.create<fir::EmboxProcOp>(loc, boxProcType, cptrCast);
+ builder.create<fir::StoreOp>(loc, cptrBox, fptr);
+}
+
// C_FUNLOC
fir::ExtendedValue
IntrinsicLibrary::genCFunLoc(mlir::Type resultType,
diff --git a/flang/test/Lower/Intrinsics/c_f_procpointer.f90 b/flang/test/Lower/Intrinsics/c_f_procpointer.f90
new file mode 100644
index 00000000000000..f70a56c91b916a
--- /dev/null
+++ b/flang/test/Lower/Intrinsics/c_f_procpointer.f90
@@ -0,0 +1,42 @@
+! Test C_F_PROCPOINTER() lowering.
+! RUN: bbc -emit-hlfir -o - %s | FileCheck %s
+
+subroutine test_c_funloc(fptr, cptr)
+ use iso_c_binding, only : c_f_procpointer, c_funptr
+ real, pointer, external :: fptr
+ type(c_funptr), cptr
+ call c_f_procpointer(cptr, fptr)
+end subroutine
+! CHECK-LABEL: func.func @_QPtest_c_funloc(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.boxproc<() -> ()>>,
+! CHECK-SAME: %[[VAL_1:.*]]: !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>> {fir.bindc_name = "cptr"}) {
+! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_1]] {uniq_name = "_QFtest_c_funlocEcptr"} : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>) -> (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>, !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>)
+! CHECK: %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFtest_c_funlocEfptr"} : (!fir.ref<!fir.boxproc<() -> ()>>) -> (!fir.ref<!fir.boxproc<() -> ()>>, !fir.ref<!fir.boxproc<() -> ()>>)
+! CHECK: %[[VAL_4:.*]] = fir.field_index __address, !fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>
+! CHECK: %[[VAL_5:.*]] = fir.coordinate_of %[[VAL_2]]#1, %[[VAL_4]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>, !fir.field) -> !fir.ref<i64>
+! CHECK: %[[VAL_6:.*]] = fir.load %[[VAL_5]] : !fir.ref<i64>
+! CHECK: %[[VAL_7:.*]] = fir.convert %[[VAL_6]] : (i64) -> (() -> ())
+! CHECK: %[[VAL_8:.*]] = fir.emboxproc %[[VAL_7]] : (() -> ()) -> !fir.boxproc<() -> ()>
+! CHECK: fir.store %[[VAL_8]] to %[[VAL_3]]#1 : !fir.ref<!fir.boxproc<() -> ()>>
+
+subroutine test_c_funloc_char(fptr, cptr)
+ use iso_c_binding, only : c_f_procpointer, c_funptr
+ interface
+ character(10) function char_func()
+ end function
+ end interface
+ procedure(char_func), pointer :: fptr
+ type(c_funptr), cptr
+ call c_f_procpointer(cptr, fptr)
+end subroutine
+! CHECK-LABEL: func.func @_QPtest_c_funloc_char(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.boxproc<() -> ()>>,
+! CHECK-SAME: %[[VAL_1:.*]]: !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>> {fir.bindc_name = "cptr"}) {
+! CHECK: %[[VAL_2:.*]]:2 = hlfir.declare %[[VAL_1]] {uniq_name = "_QFtest_c_funloc_charEcptr"} : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>) -> (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>, !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>)
+! CHECK: %[[VAL_3:.*]]:2 = hlfir.declare %[[VAL_0]] {fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFtest_c_funloc_charEfptr"} : (!fir.ref<!fir.boxproc<() -> ()>>) -> (!fir.ref<!fir.boxproc<() -> ()>>, !fir.ref<!fir.boxproc<() -> ()>>)
+! CHECK: %[[VAL_4:.*]] = fir.field_index __address, !fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>
+! CHECK: %[[VAL_5:.*]] = fir.coordinate_of %[[VAL_2]]#1, %[[VAL_4]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_funptr{__address:i64}>>, !fir.field) -> !fir.ref<i64>
+! CHECK: %[[VAL_6:.*]] = fir.load %[[VAL_5]] : !fir.ref<i64>
+! CHECK: %[[VAL_7:.*]] = fir.convert %[[VAL_6]] : (i64) -> (() -> ())
+! CHECK: %[[VAL_8:.*]] = fir.emboxproc %[[VAL_7]] : (() -> ()) -> !fir.boxproc<() -> ()>
+! CHECK: fir.store %[[VAL_8]] to %[[VAL_3]]#1 : !fir.ref<!fir.boxproc<() -> ()>>
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