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[flang] Implement COSPI #149343

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Merged
merged 1 commit into from
Jul 18, 2025
Merged

[flang] Implement COSPI #149343

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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 @@ -245,6 +245,7 @@ struct IntrinsicLibrary {
fir::ExtendedValue genCPtrCompare(mlir::Type,
llvm::ArrayRef<fir::ExtendedValue>);
mlir::Value genCosd(mlir::Type, llvm::ArrayRef<mlir::Value>);
mlir::Value genCospi(mlir::Type, llvm::ArrayRef<mlir::Value>);
void genDateAndTime(llvm::ArrayRef<fir::ExtendedValue>);
mlir::Value genDim(mlir::Type, llvm::ArrayRef<mlir::Value>);
fir::ExtendedValue genDotProduct(mlir::Type,
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1 change: 1 addition & 0 deletions flang/lib/Evaluate/intrinsics.cpp
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Expand Up @@ -428,6 +428,7 @@ static const IntrinsicInterface genericIntrinsicFunction[]{
{"conjg", {{"z", SameComplex}}, SameComplex},
{"cos", {{"x", SameFloating}}, SameFloating},
{"cosd", {{"x", SameFloating}}, SameFloating},
{"cospi", {{"x", SameFloating}}, SameFloating},
{"cosh", {{"x", SameFloating}}, SameFloating},
{"coshape", {{"coarray", AnyData, Rank::coarray}, SizeDefaultKIND}, KINDInt,
Rank::vector, IntrinsicClass::inquiryFunction},
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16 changes: 16 additions & 0 deletions flang/lib/Optimizer/Builder/IntrinsicCall.cpp
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Expand Up @@ -396,6 +396,7 @@ static constexpr IntrinsicHandler handlers[]{
{"command_argument_count", &I::genCommandArgumentCount},
{"conjg", &I::genConjg},
{"cosd", &I::genCosd},
{"cospi", &I::genCospi},
{"count",
&I::genCount,
{{{"mask", asAddr}, {"dim", asValue}, {"kind", asValue}}},
Expand Down Expand Up @@ -3623,6 +3624,21 @@ mlir::Value IntrinsicLibrary::genCosd(mlir::Type resultType,
return getRuntimeCallGenerator("cos", ftype)(builder, loc, {arg});
}

// COSPI
mlir::Value IntrinsicLibrary::genCospi(mlir::Type resultType,
llvm::ArrayRef<mlir::Value> args) {
assert(args.size() == 1);
mlir::MLIRContext *context = builder.getContext();
mlir::FunctionType ftype =
mlir::FunctionType::get(context, {resultType}, {args[0].getType()});
llvm::APFloat pi = llvm::APFloat(llvm::numbers::pi);
mlir::Value dfactor =
builder.createRealConstant(loc, mlir::Float64Type::get(context), pi);
mlir::Value factor = builder.createConvert(loc, args[0].getType(), dfactor);
mlir::Value arg = builder.create<mlir::arith::MulFOp>(loc, args[0], factor);
return getRuntimeCallGenerator("cos", ftype)(builder, loc, {arg});
}

// COUNT
fir::ExtendedValue
IntrinsicLibrary::genCount(mlir::Type resultType,
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22 changes: 22 additions & 0 deletions flang/test/Lower/Intrinsics/cospi.f90
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@@ -0,0 +1,22 @@
! RUN: %flang_fc1 -emit-fir %s -o - | FileCheck %s --check-prefixes="CHECK"

function test_real4(x)
real :: x, test_real4
test_real4 = cospi(x)
end function

! CHECK-LABEL: @_QPtest_real4
! CHECK: %[[dfactor:.*]] = arith.constant 3.1415926535897931 : f64
! CHECK: %[[factor:.*]] = fir.convert %[[dfactor]] : (f64) -> f32
! CHECK: %[[mul:.*]] = arith.mulf %{{.*}}, %[[factor]] fastmath<contract> : f32
! CHECK: %[[cos:.*]] = math.cos %[[mul]] fastmath<contract> : f32

function test_real8(x)
real(8) :: x, test_real8
test_real8 = cospi(x)
end function

! CHECK-LABEL: @_QPtest_real8
! CHECK: %[[dfactor:.*]] = arith.constant 3.1415926535897931 : f64
! CHECK: %[[mul:.*]] = arith.mulf %{{.*}}, %[[dfactor]] fastmath<contract> : f64
! CHECK: %[[cos:.*]] = math.cos %[[mul]] fastmath<contract> : f64
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