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[libc][complex] Testing infra for MPC (llvm#121261)
This PR aims to add the groundwork to test the precision of libc complex functions against MPC. I took `cargf` as a test to verify that the infra works fine.
1 parent 7109f52 commit 7f37b34

31 files changed

+1714
-906
lines changed

‎libc/CMakeLists.txt‎

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@@ -262,6 +262,7 @@ if(LIBC_TARGET_OS_IS_GPU)
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endif()
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include(LLVMLibCCheckMPFR)
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include(LLVMLibCCheckMPC)
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if(LLVM_LIBC_CLANG_TIDY)
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set(LLVM_LIBC_ENABLE_LINTING ON)

‎libc/cmake/modules/LLVMLibCCheckMPC.cmake‎

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if(LIBC_TESTS_CAN_USE_MPFR)
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set(LLVM_LIBC_MPC_INSTALL_PATH "" CACHE PATH "Path to where MPC is installed (e.g. C:/src/install or ~/src/install)")
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if(LLVM_LIBC_MPC_INSTALL_PATH)
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set(LIBC_TESTS_CAN_USE_MPC TRUE)
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elseif(LIBC_TARGET_OS_IS_GPU OR LLVM_LIBC_FULL_BUILD)
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# In full build mode, the MPC library should be built using our own facilities,
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# which is currently not possible.
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set(LIBC_TESTS_CAN_USE_MPC FALSE)
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else()
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try_compile(
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LIBC_TESTS_CAN_USE_MPC
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${CMAKE_CURRENT_BINARY_DIR}
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SOURCES
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${LIBC_SOURCE_DIR}/utils/MPCWrapper/check_mpc.cpp
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COMPILE_DEFINITIONS
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${LIBC_COMPILE_OPTIONS_DEFAULT}
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LINK_LIBRARIES
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-lmpc -lmpfr -lgmp -latomic
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)
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endif()
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endif()

‎libc/src/__support/CMakeLists.txt‎

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@@ -243,12 +243,20 @@ add_header_library(
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HDRS
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complex_type.h
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DEPENDS
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libc.src.__support.CPP.bit
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libc.src.__support.FPUtil.fp_bits
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)
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add_header_library(
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complex_basic_ops
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HDRS
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complex_basic_ops.h
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DEPENDS
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.complex_type
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libc.src.__support.CPP.bit
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libc.src.__support.FPUtil.fp_bits
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)
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add_header_library(
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integer_operations
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HDRS

‎libc/src/__support/CPP/type_traits.h‎

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@@ -26,6 +26,7 @@
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#include "src/__support/CPP/type_traits/is_array.h"
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#include "src/__support/CPP/type_traits/is_base_of.h"
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#include "src/__support/CPP/type_traits/is_class.h"
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#include "src/__support/CPP/type_traits/is_complex.h"
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#include "src/__support/CPP/type_traits/is_const.h"
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#include "src/__support/CPP/type_traits/is_constant_evaluated.h"
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#include "src/__support/CPP/type_traits/is_convertible.h"

‎libc/src/__support/complex_basic_ops.h‎

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//===-- complex basic operations --------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_SRC___SUPPORT_COMPLEX_BASIC_OPERATIONS_H
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#define LLVM_LIBC_SRC___SUPPORT_COMPLEX_BASIC_OPERATIONS_H
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#include "complex_type.h"
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#include "src/__support/CPP/bit.h"
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#include "src/__support/FPUtil/FPBits.h"
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namespace LIBC_NAMESPACE_DECL {
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template <typename T> LIBC_INLINE constexpr T conjugate(T c) {
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Complex<make_real_t<T>> c_c = cpp::bit_cast<Complex<make_real_t<T>>>(c);
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c_c.imag = -c_c.imag;
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return cpp::bit_cast<T>(c_c);
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}
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template <typename T> LIBC_INLINE constexpr T project(T c) {
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using real_t = make_real_t<T>;
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Complex<real_t> c_c = cpp::bit_cast<Complex<real_t>>(c);
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if (fputil::FPBits<real_t>(c_c.real).is_inf() ||
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fputil::FPBits<real_t>(c_c.imag).is_inf())
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return cpp::bit_cast<T>(
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Complex<real_t>{(fputil::FPBits<real_t>::inf(Sign::POS).get_val()),
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static_cast<real_t>(c_c.imag > 0 ? 0.0 : -0.0)});
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return c;
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}
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC___SUPPORT_COMPLEX_BASIC_OPERATIONS_H

‎libc/src/__support/complex_type.h‎

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@@ -9,8 +9,6 @@
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#ifndef LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H
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#define LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H
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#include "src/__support/CPP/bit.h"
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#include "src/__support/FPUtil/FPBits.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/macros/properties/complex_types.h"
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#include "src/__support/macros/properties/types.h"
@@ -71,24 +69,5 @@ template <> struct make_real<cfloat128> {
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template <typename T> using make_real_t = typename make_real<T>::type;
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template <typename T> LIBC_INLINE constexpr T conjugate(T c) {
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Complex<make_real_t<T>> c_c = cpp::bit_cast<Complex<make_real_t<T>>>(c);
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c_c.imag = -c_c.imag;
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return cpp::bit_cast<T>(c_c);
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}
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template <typename T> LIBC_INLINE constexpr T project(T c) {
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using real_t = make_real_t<T>;
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Complex<real_t> c_c = cpp::bit_cast<Complex<real_t>>(c);
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if (fputil::FPBits<real_t>(c_c.real).is_inf() ||
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fputil::FPBits<real_t>(c_c.imag).is_inf()) {
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return cpp::bit_cast<T>(
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Complex<real_t>{(fputil::FPBits<real_t>::inf(Sign::POS).get_val()),
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static_cast<real_t>(c_c.imag > 0 ? 0.0 : -0.0)});
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} else {
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return c;
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}
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}
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H

‎libc/src/complex/generic/CMakeLists.txt‎

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@@ -7,7 +7,7 @@ add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)
@@ -57,7 +57,7 @@ add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)
@@ -71,7 +71,7 @@ add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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)
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add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)
@@ -121,7 +121,7 @@ add_entrypoint_object(
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COMPILE_OPTIONS
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${libc_opt_high_flag}
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DEPENDS
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libc.src.__support.complex_type
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libc.src.__support.complex_basic_ops
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)

‎libc/src/complex/generic/conj.cpp‎

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@@ -8,7 +8,7 @@
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#include "src/complex/conj.h"
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#include "src/__support/common.h"
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#include "src/__support/complex_type.h"
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#include "src/__support/complex_basic_ops.h"
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namespace LIBC_NAMESPACE_DECL {
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‎libc/src/complex/generic/conjf.cpp‎

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#include "src/complex/conjf.h"
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#include "src/__support/common.h"
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#include "src/__support/complex_type.h"
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#include "src/__support/complex_basic_ops.h"
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namespace LIBC_NAMESPACE_DECL {
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‎libc/src/complex/generic/conjf128.cpp‎

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#include "src/complex/conjf128.h"
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#include "src/__support/common.h"
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#include "src/__support/complex_type.h"
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#include "src/__support/complex_basic_ops.h"
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namespace LIBC_NAMESPACE_DECL {
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