[𝘀𝗽𝗿] changes introduced through rebaseusers/MaskRay/spr/main.elf-orphan-placement-remove-hasinputsections-condition

Created using spr 1.3.5-bogner

[skip ci]

46 files changed, 979 insertions, 88 deletions

diff --git a/libc/src/__support/CPP/CMakeLists.txt b/libc/src/__support/CPP/CMakeLists.txt
index 08661aba5b6b..e6f58b7cd822 100644
--- a/libc/src/__support/CPP/CMakeLists.txt
+++ b/libc/src/__support/CPP/CMakeLists.txt
@@ -111,6 +111,7 @@ add_header_library(
     type_traits/add_lvalue_reference.h
     type_traits/add_pointer.h
     type_traits/add_rvalue_reference.h
+    type_traits/aligned_storage.h
     type_traits/always_false.h
     type_traits/bool_constant.h
     type_traits/conditional.h
diff --git a/libc/src/__support/CPP/type_traits.h b/libc/src/__support/CPP/type_traits.h
index 1494aeb905e0..d50b6612656d 100644
--- a/libc/src/__support/CPP/type_traits.h
+++ b/libc/src/__support/CPP/type_traits.h
@@ -12,6 +12,7 @@
 #include "src/__support/CPP/type_traits/add_lvalue_reference.h"
 #include "src/__support/CPP/type_traits/add_pointer.h"
 #include "src/__support/CPP/type_traits/add_rvalue_reference.h"
+#include "src/__support/CPP/type_traits/aligned_storage.h"
 #include "src/__support/CPP/type_traits/bool_constant.h"
 #include "src/__support/CPP/type_traits/conditional.h"
 #include "src/__support/CPP/type_traits/decay.h"
diff --git a/libc/src/__support/CPP/type_traits/aligned_storage.h b/libc/src/__support/CPP/type_traits/aligned_storage.h
new file mode 100644
index 000000000000..574b1146f6b2
--- /dev/null
+++ b/libc/src/__support/CPP/type_traits/aligned_storage.h
@@ -0,0 +1,27 @@
+//===-- aligned_storage type_traits    --------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_ALIGNED_STORAGE_H
+#define LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_ALIGNED_STORAGE_H
+
+#include <stddef.h> // size_t
+
+namespace LIBC_NAMESPACE::cpp {
+
+template <size_t Len, size_t Align> struct aligned_storage {
+  struct type {
+    alignas(Align) unsigned char data[Len];
+  };
+};
+
+template <size_t Len, size_t Align>
+using aligned_storage_t = typename aligned_storage<Len, Align>::type;
+
+} // namespace LIBC_NAMESPACE::cpp
+
+#endif // LLVM_LIBC_SRC___SUPPORT_CPP_TYPE_TRAITS_ALIGNED_STORAGE_H
diff --git a/libc/src/__support/fixedvector.h b/libc/src/__support/fixedvector.h
index 6aeb4d56363e..ddd0993a9527 100644
--- a/libc/src/__support/fixedvector.h
+++ b/libc/src/__support/fixedvector.h
@@ -24,6 +24,17 @@ template <typename T, size_t CAPACITY> class FixedVector {
 public:
   constexpr FixedVector() = default;
 
+  using iterator = typename cpp::array<T, CAPACITY>::iterator;
+  constexpr FixedVector(iterator begin, iterator end) {
+    for (; begin != end; ++begin)
+      push_back(*begin);
+  }
+
+  constexpr FixedVector(size_t count, const T &value) {
+    for (size_t i = 0; i < count; ++i)
+      push_back(value);
+  }
+
   bool push_back(const T &obj) {
     if (item_count == CAPACITY)
       return false;
@@ -43,8 +54,14 @@ public:
     return true;
   }
 
+  T &operator[](size_t idx) { return store[idx]; }
+
+  const T &operator[](size_t idx) const { return store[idx]; }
+
   bool empty() const { return item_count == 0; }
 
+  size_t size() const { return item_count; }
+
   // Empties the store for all practical purposes.
   void reset() { item_count = 0; }
 
@@ -64,7 +81,6 @@ public:
   }
   LIBC_INLINE constexpr reverse_iterator rend() { return store.rend(); }
 
-  using iterator = typename cpp::array<T, CAPACITY>::iterator;
   LIBC_INLINE constexpr iterator begin() { return store.begin(); }
   LIBC_INLINE constexpr iterator end() { return iterator{&store[item_count]}; }
 };
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 5ae03b1f46c3..7a349ddc5372 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -124,50 +124,60 @@ add_math_entrypoint_object(fmax)
 add_math_entrypoint_object(fmaxf)
 add_math_entrypoint_object(fmaxl)
 add_math_entrypoint_object(fmaxf128)
+add_math_entrypoint_object(fmaxf16)
 
 add_math_entrypoint_object(fmin)
 add_math_entrypoint_object(fminf)
 add_math_entrypoint_object(fminl)
 add_math_entrypoint_object(fminf128)
+add_math_entrypoint_object(fminf16)
 
 add_math_entrypoint_object(fmaximum)
 add_math_entrypoint_object(fmaximumf)
 add_math_entrypoint_object(fmaximuml)
+add_math_entrypoint_object(fmaximumf16)
 add_math_entrypoint_object(fmaximumf128)
 
 add_math_entrypoint_object(fmaximum_num)
 add_math_entrypoint_object(fmaximum_numf)
 add_math_entrypoint_object(fmaximum_numl)
+add_math_entrypoint_object(fmaximum_numf16)
 add_math_entrypoint_object(fmaximum_numf128)
 
 add_math_entrypoint_object(fmaximum_mag)
 add_math_entrypoint_object(fmaximum_magf)
 add_math_entrypoint_object(fmaximum_magl)
+add_math_entrypoint_object(fmaximum_magf16)
 add_math_entrypoint_object(fmaximum_magf128)
 
 add_math_entrypoint_object(fmaximum_mag_num)
 add_math_entrypoint_object(fmaximum_mag_numf)
 add_math_entrypoint_object(fmaximum_mag_numl)
+add_math_entrypoint_object(fmaximum_mag_numf16)
 add_math_entrypoint_object(fmaximum_mag_numf128)
 
 add_math_entrypoint_object(fminimum)
 add_math_entrypoint_object(fminimumf)
 add_math_entrypoint_object(fminimuml)
+add_math_entrypoint_object(fminimumf16)
 add_math_entrypoint_object(fminimumf128)
 
 add_math_entrypoint_object(fminimum_num)
 add_math_entrypoint_object(fminimum_numf)
 add_math_entrypoint_object(fminimum_numl)
+add_math_entrypoint_object(fminimum_numf16)
 add_math_entrypoint_object(fminimum_numf128)
 
 add_math_entrypoint_object(fminimum_mag)
 add_math_entrypoint_object(fminimum_magf)
 add_math_entrypoint_object(fminimum_magl)
+add_math_entrypoint_object(fminimum_magf16)
 add_math_entrypoint_object(fminimum_magf128)
 
 add_math_entrypoint_object(fminimum_mag_num)
 add_math_entrypoint_object(fminimum_mag_numf)
 add_math_entrypoint_object(fminimum_mag_numl)
+add_math_entrypoint_object(fminimum_mag_numf16)
 add_math_entrypoint_object(fminimum_mag_numf128)
 
 add_math_entrypoint_object(fmod)
@@ -270,20 +280,24 @@ add_math_entrypoint_object(nearbyintf128)
 add_math_entrypoint_object(nextafter)
 add_math_entrypoint_object(nextafterf)
 add_math_entrypoint_object(nextafterl)
+add_math_entrypoint_object(nextafterf16)
 add_math_entrypoint_object(nextafterf128)
 
 add_math_entrypoint_object(nexttoward)
 add_math_entrypoint_object(nexttowardf)
 add_math_entrypoint_object(nexttowardl)
+add_math_entrypoint_object(nexttowardf16)
 
 add_math_entrypoint_object(nextdown)
 add_math_entrypoint_object(nextdownf)
 add_math_entrypoint_object(nextdownl)
+add_math_entrypoint_object(nextdownf16)
 add_math_entrypoint_object(nextdownf128)
 
 add_math_entrypoint_object(nextup)
 add_math_entrypoint_object(nextupf)
 add_math_entrypoint_object(nextupl)
+add_math_entrypoint_object(nextupf16)
 add_math_entrypoint_object(nextupf128)
 
 add_math_entrypoint_object(pow)
diff --git a/libc/src/math/fmaxf16.h b/libc/src/math/fmaxf16.h
new file mode 100644
index 000000000000..bf608f82c420
--- /dev/null
+++ b/libc/src/math/fmaxf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaxf16 -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMAXF16_H
+#define LLVM_LIBC_SRC_MATH_FMAXF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fmaxf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXF16_H
diff --git a/libc/src/math/fmaximum_mag_numf16.h b/libc/src/math/fmaximum_mag_numf16.h
new file mode 100644
index 000000000000..4c963d4dccc7
--- /dev/null
+++ b/libc/src/math/fmaximum_mag_numf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaximum_mag_numf16 -----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMAXIMUM_MAG_NUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMAXIMUM_MAG_NUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fmaximum_mag_numf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXIMUM_MAG_NUMF16_H
diff --git a/libc/src/math/fmaximum_magf16.h b/libc/src/math/fmaximum_magf16.h
new file mode 100644
index 000000000000..e5f57d3b7f1d
--- /dev/null
+++ b/libc/src/math/fmaximum_magf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaximum_magf16 ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMAXIMUM_MAGF16_H
+#define LLVM_LIBC_SRC_MATH_FMAXIMUM_MAGF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fmaximum_magf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXIMUM_MAGF16_H
diff --git a/libc/src/math/fmaximum_numf16.h b/libc/src/math/fmaximum_numf16.h
new file mode 100644
index 000000000000..b450a4595648
--- /dev/null
+++ b/libc/src/math/fmaximum_numf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaximum_numf16 ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMAXIMUM_NUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMAXIMUM_NUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fmaximum_numf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXIMUM_NUMF16_H
diff --git a/libc/src/math/fmaximumf16.h b/libc/src/math/fmaximumf16.h
new file mode 100644
index 000000000000..806339fde683
--- /dev/null
+++ b/libc/src/math/fmaximumf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaximumf16 -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMAXIMUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMAXIMUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fmaximumf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXIMUMF16_H
diff --git a/libc/src/math/fminf16.h b/libc/src/math/fminf16.h
new file mode 100644
index 000000000000..22d4e6c80394
--- /dev/null
+++ b/libc/src/math/fminf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminf16 -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMINF16_H
+#define LLVM_LIBC_SRC_MATH_FMINF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fminf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINF16_H
diff --git a/libc/src/math/fminimum_mag_numf16.h b/libc/src/math/fminimum_mag_numf16.h
new file mode 100644
index 000000000000..0fd314b2f5a2
--- /dev/null
+++ b/libc/src/math/fminimum_mag_numf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminimum_mag_numf16 -----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMINIMUM_MAG_NUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMINIMUM_MAG_NUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fminimum_mag_numf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINIMUM_MAG_NUMF16_H
diff --git a/libc/src/math/fminimum_magf16.h b/libc/src/math/fminimum_magf16.h
new file mode 100644
index 000000000000..27673555403c
--- /dev/null
+++ b/libc/src/math/fminimum_magf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminimum_magf16 ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMINIMUM_MAGF16_H
+#define LLVM_LIBC_SRC_MATH_FMINIMUM_MAGF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fminimum_magf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINIMUM_MAGF16_H
diff --git a/libc/src/math/fminimum_numf16.h b/libc/src/math/fminimum_numf16.h
new file mode 100644
index 000000000000..598ff9d3c32d
--- /dev/null
+++ b/libc/src/math/fminimum_numf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminimum_numf16 ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMINIMUM_NUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMINIMUM_NUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fminimum_numf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINIMUM_NUMF16_H
diff --git a/libc/src/math/fminimumf16.h b/libc/src/math/fminimumf16.h
new file mode 100644
index 000000000000..86dd240ae406
--- /dev/null
+++ b/libc/src/math/fminimumf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminimumf16 -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FMINIMUMF16_H
+#define LLVM_LIBC_SRC_MATH_FMINIMUMF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 fminimumf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINIMUMF16_H
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 95904bef93d2..b1d786fc6b29 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -1783,6 +1783,20 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fminf16
+  SRCS
+    fminf16.cpp
+  HDRS
+    ../fminf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+
+add_entrypoint_object(
   fmax
   SRCS
     fmax.cpp
@@ -1832,6 +1846,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fmaxf16
+  SRCS
+    fmaxf16.cpp
+  HDRS
+    ../fmaxf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fmaximum
   SRCS
     fmaximum.cpp
@@ -1868,6 +1895,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fmaximumf16
+  SRCS
+    fmaximumf16.cpp
+  HDRS
+    ../fmaximumf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fmaximumf128
   SRCS
     fmaximumf128.cpp
@@ -1917,6 +1957,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fmaximum_numf16
+  SRCS
+    fmaximum_numf16.cpp
+  HDRS
+    ../fmaximum_numf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fmaximum_numf128
   SRCS
     fmaximum_numf128.cpp
@@ -1966,6 +2019,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fmaximum_magf16
+  SRCS
+    fmaximum_magf16.cpp
+  HDRS
+    ../fmaximum_magf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fmaximum_magf128
   SRCS
     fmaximum_magf128.cpp
@@ -1978,7 +2044,6 @@ add_entrypoint_object(
     -O3
 )
 
-
 add_entrypoint_object(
   fmaximum_mag_num
   SRCS
@@ -2016,6 +2081,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fmaximum_mag_numf16
+  SRCS
+    fmaximum_mag_numf16.cpp
+  HDRS
+    ../fmaximum_mag_numf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fmaximum_mag_numf128
   SRCS
     fmaximum_mag_numf128.cpp
@@ -2065,6 +2143,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fminimumf16
+  SRCS
+    fminimumf16.cpp
+  HDRS
+    ../fminimumf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fminimumf128
   SRCS
     fminimumf128.cpp
@@ -2114,6 +2205,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fminimum_numf16
+  SRCS
+    fminimum_numf16.cpp
+  HDRS
+    ../fminimum_numf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fminimum_numf128
   SRCS
     fminimum_numf128.cpp
@@ -2163,6 +2267,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fminimum_magf16
+  SRCS
+    fminimum_magf16.cpp
+  HDRS
+    ../fminimum_magf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fminimum_magf128
   SRCS
     fminimum_magf128.cpp
@@ -2175,7 +2292,6 @@ add_entrypoint_object(
     -O3
 )
 
-
 add_entrypoint_object(
   fminimum_mag_num
   SRCS
@@ -2213,6 +2329,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  fminimum_mag_numf16
+  SRCS
+    fminimum_mag_numf16.cpp
+  HDRS
+    ../fminimum_mag_numf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.basic_operations
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   fminimum_mag_numf128
   SRCS
     fminimum_mag_numf128.cpp
@@ -2524,6 +2653,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  nextafterf16
+  SRCS
+    nextafterf16.cpp
+  HDRS
+    ../nextafterf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.manipulation_functions
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   nextafterf128
   SRCS
     nextafterf128.cpp
@@ -2573,6 +2715,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  nexttowardf16
+  SRCS
+    nexttowardf16.cpp
+  HDRS
+    ../nexttowardf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.manipulation_functions
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   nextdown
   SRCS
     nextdown.cpp
@@ -2609,6 +2764,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  nextdownf16
+  SRCS
+    nextdownf16.cpp
+  HDRS
+    ../nextdownf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.manipulation_functions
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   nextdownf128
   SRCS
     nextdownf128.cpp
@@ -2658,6 +2826,19 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  nextupf16
+  SRCS
+    nextupf16.cpp
+  HDRS
+    ../nextupf16.h
+  DEPENDS
+    libc.src.__support.macros.properties.types
+    libc.src.__support.FPUtil.manipulation_functions
+  COMPILE_OPTIONS
+    -O3
+)
+
+add_entrypoint_object(
   nextupf128
   SRCS
     nextupf128.cpp
diff --git a/libc/src/math/generic/fmaxf16.cpp b/libc/src/math/generic/fmaxf16.cpp
new file mode 100644
index 000000000000..c317aef3cb3b
--- /dev/null
+++ b/libc/src/math/generic/fmaxf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaxf16 function --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fmaxf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fmaxf16, (float16 x, float16 y)) {
+  return fputil::fmax(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fmaximum_mag_numf16.cpp b/libc/src/math/generic/fmaximum_mag_numf16.cpp
new file mode 100644
index 000000000000..5055802c4cf8
--- /dev/null
+++ b/libc/src/math/generic/fmaximum_mag_numf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaximum_mag_numf16 function --------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fmaximum_mag_numf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fmaximum_mag_numf16, (float16 x, float16 y)) {
+  return fputil::fmaximum_mag_num(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fmaximum_magf16.cpp b/libc/src/math/generic/fmaximum_magf16.cpp
new file mode 100644
index 000000000000..fbd5eaccf309
--- /dev/null
+++ b/libc/src/math/generic/fmaximum_magf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaximum_magf16 function ------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fmaximum_magf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fmaximum_magf16, (float16 x, float16 y)) {
+  return fputil::fmaximum_mag(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fmaximum_numf16.cpp b/libc/src/math/generic/fmaximum_numf16.cpp
new file mode 100644
index 000000000000..187cfbeee6e2
--- /dev/null
+++ b/libc/src/math/generic/fmaximum_numf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaximum_numf16 function ------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fmaximum_numf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fmaximum_numf16, (float16 x, float16 y)) {
+  return fputil::fmaximum_num(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fmaximumf16.cpp b/libc/src/math/generic/fmaximumf16.cpp
new file mode 100644
index 000000000000..9e194d2ecef6
--- /dev/null
+++ b/libc/src/math/generic/fmaximumf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaximumf16 function ----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fmaximumf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fmaximumf16, (float16 x, float16 y)) {
+  return fputil::fmaximum(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminf16.cpp b/libc/src/math/generic/fminf16.cpp
new file mode 100644
index 000000000000..12547c33c636
--- /dev/null
+++ b/libc/src/math/generic/fminf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminf16 function --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fminf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fminf16, (float16 x, float16 y)) {
+  return fputil::fmin(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminimum_mag_numf16.cpp b/libc/src/math/generic/fminimum_mag_numf16.cpp
new file mode 100644
index 000000000000..1a893c6c4bbc
--- /dev/null
+++ b/libc/src/math/generic/fminimum_mag_numf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminimum_mag_numf16 function --------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fminimum_mag_numf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fminimum_mag_numf16, (float16 x, float16 y)) {
+  return fputil::fminimum_mag_num(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminimum_magf16.cpp b/libc/src/math/generic/fminimum_magf16.cpp
new file mode 100644
index 000000000000..45183a963e2d
--- /dev/null
+++ b/libc/src/math/generic/fminimum_magf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminimum_magf16 function ------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fminimum_magf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fminimum_magf16, (float16 x, float16 y)) {
+  return fputil::fminimum_mag(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminimum_numf16.cpp b/libc/src/math/generic/fminimum_numf16.cpp
new file mode 100644
index 000000000000..825ad3e7b63a
--- /dev/null
+++ b/libc/src/math/generic/fminimum_numf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminimum_numf16 function ------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fminimum_numf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fminimum_numf16, (float16 x, float16 y)) {
+  return fputil::fminimum_num(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminimumf16.cpp b/libc/src/math/generic/fminimumf16.cpp
new file mode 100644
index 000000000000..16f738be7e58
--- /dev/null
+++ b/libc/src/math/generic/fminimumf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminimumf16 function ----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fminimumf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, fminimumf16, (float16 x, float16 y)) {
+  return fputil::fminimum(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/nextafterf16.cpp b/libc/src/math/generic/nextafterf16.cpp
new file mode 100644
index 000000000000..144b3fc61461
--- /dev/null
+++ b/libc/src/math/generic/nextafterf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of nextafterf16 function ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextafterf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, nextafterf16, (float16 x, float16 y)) {
+  return fputil::nextafter(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/nextdownf16.cpp b/libc/src/math/generic/nextdownf16.cpp
new file mode 100644
index 000000000000..9fdaa9dafdd8
--- /dev/null
+++ b/libc/src/math/generic/nextdownf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of nextdownf16 function ----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextdownf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, nextdownf16, (float16 x)) {
+  return fputil::nextupdown</*IsDown=*/true>(x);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/nexttowardf16.cpp b/libc/src/math/generic/nexttowardf16.cpp
new file mode 100644
index 000000000000..d1d78e8f22d3
--- /dev/null
+++ b/libc/src/math/generic/nexttowardf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of nexttowardf16 function --------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nexttowardf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, nexttowardf16, (float16 x, long double y)) {
+  // We can reuse the nextafter implementation because the internal nextafter is
+  // templated on the types of the arguments.
+  return fputil::nextafter(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/nextupf16.cpp b/libc/src/math/generic/nextupf16.cpp
new file mode 100644
index 000000000000..5d3d52c94068
--- /dev/null
+++ b/libc/src/math/generic/nextupf16.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of nextupf16 function ------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextupf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, nextupf16, (float16 x)) {
+  return fputil::nextupdown</*IsDown=*/false>(x);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/nextafterf16.h b/libc/src/math/nextafterf16.h
new file mode 100644
index 000000000000..293569ef40c5
--- /dev/null
+++ b/libc/src/math/nextafterf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for nextafterf16 ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTAFTERF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTAFTERF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 nextafterf16(float16 x, float16 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTAFTERF16_H
diff --git a/libc/src/math/nextdownf16.h b/libc/src/math/nextdownf16.h
new file mode 100644
index 000000000000..19137574ac92
--- /dev/null
+++ b/libc/src/math/nextdownf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for nextdownf16 -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTDOWNF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTDOWNF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 nextdownf16(float16 x);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTDOWNF16_H
diff --git a/libc/src/math/nexttowardf16.h b/libc/src/math/nexttowardf16.h
new file mode 100644
index 000000000000..604eb32c2577
--- /dev/null
+++ b/libc/src/math/nexttowardf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for nexttowardf16 -----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTTOWARDF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTTOWARDF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 nexttowardf16(float16 x, long double y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTTOWARDF16_H
diff --git a/libc/src/math/nextupf16.h b/libc/src/math/nextupf16.h
new file mode 100644
index 000000000000..b2973e4afc25
--- /dev/null
+++ b/libc/src/math/nextupf16.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for nextupf16 ---------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTUPF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTUPF16_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 nextupf16(float16 x);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTUPF16_H
diff --git a/libc/src/stdlib/CMakeLists.txt b/libc/src/stdlib/CMakeLists.txt
index e0bff5198b59..219c85dda675 100644
--- a/libc/src/stdlib/CMakeLists.txt
+++ b/libc/src/stdlib/CMakeLists.txt
@@ -50,6 +50,7 @@ add_entrypoint_object(
     quick_exit.h
   DEPENDS
     libc.src.__support.OSUtil.osutil
+    .exit_handler
 )
 
 add_entrypoint_object(
@@ -415,14 +416,14 @@ add_entrypoint_object(
     libc.src.__support.OSUtil.osutil
 )
 
-add_entrypoint_object(
-  atexit
+add_object_library(
+  exit_handler
   SRCS
-    atexit.cpp
+    exit_handler.cpp
   HDRS
-    atexit.h
+    exit_handler.h
   CXX_STANDARD
-    20 # For constinit of the atexit callback list.
+    20 # For constinit 
   DEPENDS
     libc.src.__support.CPP.mutex
     libc.src.__support.CPP.new
@@ -433,6 +434,26 @@ add_entrypoint_object(
 )
 
 add_entrypoint_object(
+  atexit
+  SRCS
+    atexit.cpp
+  HDRS
+    atexit.h
+  DEPENDS
+    .exit_handler
+)
+
+add_entrypoint_object(
+  at_quick_exit
+  SRCS
+    at_quick_exit.cpp
+  HDRS
+    at_quick_exit.h
+  DEPENDS
+    .exit_handler
+)
+
+add_entrypoint_object(
   exit
   SRCS
     exit.cpp
@@ -442,6 +463,7 @@ add_entrypoint_object(
     ._Exit
     .atexit
     libc.src.__support.OSUtil.osutil
+    .exit_handler
 )
 
 add_entrypoint_object(
diff --git a/libc/src/stdlib/at_quick_exit.cpp b/libc/src/stdlib/at_quick_exit.cpp
new file mode 100644
index 000000000000..752d67e7fe44
--- /dev/null
+++ b/libc/src/stdlib/at_quick_exit.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of at_quick_exit -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/stdlib/at_quick_exit.h"
+#include "hdr/types/atexithandler_t.h"
+#include "src/__support/common.h"
+#include "src/stdlib/exit_handler.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, at_quick_exit, (__atexithandler_t callback)) {
+  return add_atexit_unit(
+      at_quick_exit_callbacks,
+      {&stdc_at_exit_func, reinterpret_cast<void *>(callback)});
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdlib/at_quick_exit.h b/libc/src/stdlib/at_quick_exit.h
new file mode 100644
index 000000000000..c36c797088ab
--- /dev/null
+++ b/libc/src/stdlib/at_quick_exit.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for at_quick_exit -----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_STDLIB_AT_QUICK_EXIT_H
+#define LLVM_LIBC_SRC_STDLIB_AT_QUICK_EXIT_H
+
+#include "hdr/types/atexithandler_t.h"
+
+namespace LIBC_NAMESPACE {
+
+int at_quick_exit(__atexithandler_t);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDLIB_AT_QUICK_EXIT_H
diff --git a/libc/src/stdlib/atexit.cpp b/libc/src/stdlib/atexit.cpp
index 9e37c4cf256c..ca3cbfe87a88 100644
--- a/libc/src/stdlib/atexit.cpp
+++ b/libc/src/stdlib/atexit.cpp
@@ -7,95 +7,28 @@
 //===----------------------------------------------------------------------===//
 
 #include "src/stdlib/atexit.h"
-#include "src/__support/CPP/mutex.h" // lock_guard
-#include "src/__support/blockstore.h"
+#include "hdr/types/atexithandler_t.h"
 #include "src/__support/common.h"
-#include "src/__support/fixedvector.h"
-#include "src/__support/threads/mutex.h"
+#include "src/stdlib/exit_handler.h"
 
 namespace LIBC_NAMESPACE {
 
-namespace {
-
-Mutex handler_list_mtx(/*timed=*/false, /*recursive=*/false, /*robust=*/false,
-                       /*pshared=*/false);
-
-using AtExitCallback = void(void *);
-using StdCAtExitCallback = void(void);
-
-struct AtExitUnit {
-  AtExitCallback *callback = nullptr;
-  void *payload = nullptr;
-  constexpr AtExitUnit() = default;
-  constexpr AtExitUnit(AtExitCallback *c, void *p) : callback(c), payload(p) {}
-};
-
-#if defined(LIBC_TARGET_ARCH_IS_GPU)
-// The GPU build cannot handle the potentially recursive definitions required by
-// the BlockStore class. Additionally, the liklihood that someone exceeds this
-// while executing on the GPU is extremely small.
-// FIXME: It is not generally safe to use 'atexit' on the GPU because the
-//        mutexes simply passthrough. We will need a lock free stack.
-using ExitCallbackList = FixedVector<AtExitUnit, 64>;
-#elif defined(LIBC_COPT_PUBLIC_PACKAGING)
-using ExitCallbackList = ReverseOrderBlockStore<AtExitUnit, 32>;
-#else
-// BlockStore uses dynamic memory allocation. To avoid dynamic memory
-// allocation in tests, we use a fixed size callback list when built for
-// tests.
-// If we use BlockStore, then we will have to pull in malloc etc into
-// the tests. While this is not bad, the problem we have currently is
-// that LLVM libc' allocator is SCUDO. So, we will end up pulling SCUDO's
-// deps also (some of which are not yet available in LLVM libc) into the
-// integration tests.
-using ExitCallbackList = FixedVector<AtExitUnit, CALLBACK_LIST_SIZE_FOR_TESTS>;
-#endif // LIBC_COPT_PUBLIC_PACKAGING
-
-constinit ExitCallbackList exit_callbacks;
-
-void stdc_at_exit_func(void *payload) {
-  reinterpret_cast<StdCAtExitCallback *>(payload)();
-}
-
-void call_exit_callbacks() {
-  handler_list_mtx.lock();
-  while (!exit_callbacks.empty()) {
-    AtExitUnit &unit = exit_callbacks.back();
-    exit_callbacks.pop_back();
-    handler_list_mtx.unlock();
-    unit.callback(unit.payload);
-    handler_list_mtx.lock();
-  }
-  ExitCallbackList::destroy(&exit_callbacks);
-}
-
-int add_atexit_unit(const AtExitUnit &unit) {
-  cpp::lock_guard lock(handler_list_mtx);
-  if (exit_callbacks.push_back(unit))
-    return 0;
-  return -1;
-}
-
-} // namespace
-
 extern "C" {
 
-// TODO: Handle the last dso handle argument.
 int __cxa_atexit(AtExitCallback *callback, void *payload, void *) {
-  return add_atexit_unit({callback, payload});
+  return add_atexit_unit(atexit_callbacks, {callback, payload});
 }
 
-// TODO: Handle the dso handle argument. call_exit_callbacks should only invoke
-// the callbacks from this DSO. Requires adding support for __dso_handle.
 void __cxa_finalize(void *dso) {
   if (!dso)
-    call_exit_callbacks();
+    call_exit_callbacks(atexit_callbacks);
 }
 
 } // extern "C"
 
-LLVM_LIBC_FUNCTION(int, atexit, (StdCAtExitCallback * callback)) {
+LLVM_LIBC_FUNCTION(int, atexit, (__atexithandler_t callback)) {
   return add_atexit_unit(
+      atexit_callbacks,
       {&stdc_at_exit_func, reinterpret_cast<void *>(callback)});
 }
 
diff --git a/libc/src/stdlib/atexit.h b/libc/src/stdlib/atexit.h
index 7cf9d7c92191..7faaf654247c 100644
--- a/libc/src/stdlib/atexit.h
+++ b/libc/src/stdlib/atexit.h
@@ -9,13 +9,10 @@
 #ifndef LLVM_LIBC_SRC_STDLIB_ATEXIT_H
 #define LLVM_LIBC_SRC_STDLIB_ATEXIT_H
 
-#include <stddef.h> // For size_t
-
+#include "hdr/types/atexithandler_t.h"
 namespace LIBC_NAMESPACE {
 
-constexpr size_t CALLBACK_LIST_SIZE_FOR_TESTS = 1024;
-
-int atexit(void (*function)());
+int atexit(__atexithandler_t);
 
 } // namespace LIBC_NAMESPACE
 
diff --git a/libc/src/stdlib/exit_handler.cpp b/libc/src/stdlib/exit_handler.cpp
new file mode 100644
index 000000000000..ed41247e4a31
--- /dev/null
+++ b/libc/src/stdlib/exit_handler.cpp
@@ -0,0 +1,42 @@
+//===--- Implementation of exit_handler------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/stdlib/exit_handler.h"
+#include "src/__support/CPP/mutex.h" // lock_guard
+
+namespace LIBC_NAMESPACE {
+
+constinit ExitCallbackList at_quick_exit_callbacks;
+constinit ExitCallbackList atexit_callbacks;
+
+Mutex handler_list_mtx(false, false, false, false);
+
+void stdc_at_exit_func(void *payload) {
+  reinterpret_cast<StdCAtExitCallback *>(payload)();
+}
+
+void call_exit_callbacks(ExitCallbackList &callbacks) {
+  handler_list_mtx.lock();
+  while (!callbacks.empty()) {
+    AtExitUnit &unit = callbacks.back();
+    callbacks.pop_back();
+    handler_list_mtx.unlock();
+    unit.callback(unit.payload);
+    handler_list_mtx.lock();
+  }
+  ExitCallbackList::destroy(&callbacks);
+}
+
+int add_atexit_unit(ExitCallbackList &callbacks, const AtExitUnit &unit) {
+  cpp::lock_guard lock(handler_list_mtx);
+  if (callbacks.push_back(unit))
+    return 0;
+  return -1;
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/stdlib/exit_handler.h b/libc/src/stdlib/exit_handler.h
new file mode 100644
index 000000000000..8494c2f2e526
--- /dev/null
+++ b/libc/src/stdlib/exit_handler.h
@@ -0,0 +1,53 @@
+//===-- Implementation header for exit_handler ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_STDLIB_EXIT_HANDLER_H
+#define LLVM_LIBC_SRC_STDLIB_EXIT_HANDLER_H
+
+#include "src/__support/CPP/mutex.h" // lock_guard
+#include "src/__support/blockstore.h"
+#include "src/__support/common.h"
+#include "src/__support/fixedvector.h"
+#include "src/__support/threads/mutex.h"
+
+namespace LIBC_NAMESPACE {
+
+using AtExitCallback = void(void *);
+using StdCAtExitCallback = void(void);
+constexpr size_t CALLBACK_LIST_SIZE_FOR_TESTS = 1024;
+
+struct AtExitUnit {
+  AtExitCallback *callback = nullptr;
+  void *payload = nullptr;
+  LIBC_INLINE constexpr AtExitUnit() = default;
+  LIBC_INLINE constexpr AtExitUnit(AtExitCallback *c, void *p)
+      : callback(c), payload(p) {}
+};
+
+#if defined(LIBC_TARGET_ARCH_IS_GPU)
+using ExitCallbackList = FixedVector<AtExitUnit, 64>;
+#elif defined(LIBC_COPT_PUBLIC_PACKAGING)
+using ExitCallbackList = ReverseOrderBlockStore<AtExitUnit, 32>;
+#else
+using ExitCallbackList = FixedVector<AtExitUnit, CALLBACK_LIST_SIZE_FOR_TESTS>;
+#endif
+
+extern ExitCallbackList atexit_callbacks;
+extern ExitCallbackList at_quick_exit_callbacks;
+
+extern Mutex handler_list_mtx;
+
+void stdc_at_exit_func(void *payload);
+
+void call_exit_callbacks(ExitCallbackList &callbacks);
+
+int add_atexit_unit(ExitCallbackList &callbacks, const AtExitUnit &unit);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_STDLIB_EXIT_HANDLER_H
diff --git a/libc/src/stdlib/quick_exit.cpp b/libc/src/stdlib/quick_exit.cpp
index cf7f07bf2439..38f0a3db3e2c 100644
--- a/libc/src/stdlib/quick_exit.cpp
+++ b/libc/src/stdlib/quick_exit.cpp
@@ -9,13 +9,15 @@
 #include "src/stdlib/quick_exit.h"
 #include "src/__support/OSUtil/exit.h"
 #include "src/__support/common.h"
+#include "src/stdlib/exit_handler.h"
 
 // extern "C" void __cxa_finalize(void *);
-
 namespace LIBC_NAMESPACE {
 
+extern ExitCallbackList at_quick_exit_callbacks;
+
 [[noreturn]] LLVM_LIBC_FUNCTION(void, quick_exit, (int status)) {
-  // __cxa_finalize(nullptr);
+  call_exit_callbacks(at_quick_exit_callbacks);
   internal::exit(status);
 }
 
diff --git a/libc/src/sys/epoll/linux/CMakeLists.txt b/libc/src/sys/epoll/linux/CMakeLists.txt
index 4e661b262b85..5ba89bd1af60 100644
--- a/libc/src/sys/epoll/linux/CMakeLists.txt
+++ b/libc/src/sys/epoll/linux/CMakeLists.txt
@@ -48,6 +48,7 @@ add_entrypoint_object(
     libc.hdr.types.struct_timespec
     libc.include.sys_syscall
     libc.src.__support.OSUtil.osutil
+    libc.src.__support.macros.sanitizer
     libc.src.errno.errno
 )
 
@@ -65,6 +66,7 @@ add_entrypoint_object(
     libc.hdr.signal_macros
     libc.include.sys_syscall
     libc.src.__support.OSUtil.osutil
+    libc.src.__support.macros.sanitizer
     libc.src.errno.errno
 )
 
@@ -82,5 +84,6 @@ add_entrypoint_object(
     libc.hdr.signal_macros
     libc.include.sys_syscall
     libc.src.__support.OSUtil.osutil
+    libc.src.__support.macros.sanitizer
     libc.src.errno.errno
 )
diff --git a/libc/src/sys/epoll/linux/epoll_pwait.cpp b/libc/src/sys/epoll/linux/epoll_pwait.cpp
index 8f498d18d547..24b66f0721b3 100644
--- a/libc/src/sys/epoll/linux/epoll_pwait.cpp
+++ b/libc/src/sys/epoll/linux/epoll_pwait.cpp
@@ -13,6 +13,7 @@
 #include "hdr/types/struct_epoll_event.h"
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
+#include "src/__support/macros/sanitizer.h"
 #include "src/errno/libc_errno.h"
 
 #include <sys/syscall.h> // For syscall numbers.
@@ -33,6 +34,8 @@ LLVM_LIBC_FUNCTION(int, epoll_pwait,
     return -1;
   }
 
+  MSAN_UNPOISON(events, ret * sizeof(struct epoll_event));
+
   return ret;
 }
 
diff --git a/libc/src/sys/epoll/linux/epoll_pwait2.cpp b/libc/src/sys/epoll/linux/epoll_pwait2.cpp
index bd33cb6325ce..e13423a085a5 100644
--- a/libc/src/sys/epoll/linux/epoll_pwait2.cpp
+++ b/libc/src/sys/epoll/linux/epoll_pwait2.cpp
@@ -14,6 +14,7 @@
 #include "hdr/types/struct_timespec.h"
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
+#include "src/__support/macros/sanitizer.h"
 #include "src/errno/libc_errno.h"
 
 #include <sys/syscall.h> // For syscall numbers.
@@ -35,6 +36,8 @@ LLVM_LIBC_FUNCTION(int, epoll_pwait2,
     return -1;
   }
 
+  MSAN_UNPOISON(events, ret * sizeof(struct epoll_event));
+
   return ret;
 }
 
diff --git a/libc/src/sys/epoll/linux/epoll_wait.cpp b/libc/src/sys/epoll/linux/epoll_wait.cpp
index 95238d872d52..3ce4a92e7969 100644
--- a/libc/src/sys/epoll/linux/epoll_wait.cpp
+++ b/libc/src/sys/epoll/linux/epoll_wait.cpp
@@ -13,6 +13,7 @@
 #include "hdr/types/struct_epoll_event.h"
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
+#include "src/__support/macros/sanitizer.h"
 #include "src/errno/libc_errno.h"
 
 #include <sys/syscall.h> // For syscall numbers.
@@ -39,6 +40,8 @@ LLVM_LIBC_FUNCTION(int, epoll_wait,
     return -1;
   }
 
+  MSAN_UNPOISON(events, ret * sizeof(struct epoll_event));
+
   return ret;
 }