bunp up pytorch nightly version (#12407)

Summary:
Pull Request resolved: #12407

as title

Reviewed By: shoumikhin

Differential Revision: D78181215

Author: Gasoonjia

.ci/docker/ci_commit_pins/pytorch.txt

@@ -1 +1 @@
-7cda4017ddda554752e89069ae205be5e8388f59
+87b2ac5d1992c9b4f4167517251b99b513c328a8

install_requirements.py

@@ -71,7 +71,7 @@ def python_is_compatible():
 #
 # NOTE: If you're changing, make the corresponding change in .ci/docker/ci_commit_pins/pytorch.txt
 # by picking the hash from the same date in https://hud.pytorch.org/hud/pytorch/pytorch/nightly/
-NIGHTLY_VERSION = "dev20250706"
+NIGHTLY_VERSION = "dev20250711"
 
 
 def install_requirements(use_pytorch_nightly):

runtime/core/portable_type/c10/c10/util/BFloat16.h

@@ -4,6 +4,7 @@
 // 1 bit for the sign, 8 bits for the exponent and 7 bits for the mantissa.
 
 #include <c10/macros/Macros.h>
+#include <c10/util/bit_cast.h>
 #include <cmath>
 #include <cstdint>
 #include <cstring>
@@ -67,13 +68,7 @@ inline C10_HOST_DEVICE uint16_t round_to_nearest_even(float src) {
 #endif
     return UINT16_C(0x7FC0);
   } else {
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
-    union {
-      uint32_t U32; // NOLINT(facebook-hte-BadMemberName)
-      float F32; // NOLINT(facebook-hte-BadMemberName)
-    };
-
-    F32 = src;
+    const uint32_t U32 = c10::bit_cast<uint32_t>(src);
     uint32_t rounding_bias = ((U32 >> 16) & 1) + UINT32_C(0x7FFF);
     return static_cast<uint16_t>((U32 + rounding_bias) >> 16);
   }
@@ -111,9 +106,7 @@ struct alignas(2) BFloat16 {
 #endif
 };
 
-C10_API inline std::ostream& operator<<(
-    std::ostream& out,
-    const BFloat16& value) {
+inline std::ostream& operator<<(std::ostream& out, const BFloat16& value) {
   out << (float)value;
   return out;
 }

runtime/core/portable_type/c10/c10/util/Half.h

@@ -414,7 +414,7 @@ struct alignas(2) Half {
 #endif
 };
 
-C10_API inline std::ostream& operator<<(std::ostream& out, const Half& value) {
+inline std::ostream& operator<<(std::ostream& out, const Half& value) {
   out << (float)value;
   return out;
 }

runtime/core/portable_type/c10/c10/util/bit_cast.h

@@ -3,6 +3,8 @@
 #include <cstring>
 #include <type_traits>
 
+#include <c10/macros/Macros.h>
+
 #if __has_include(<bit>) && (defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806L)
 #include <bit>
 #define C10_HAVE_STD_BIT_CAST 1
@@ -23,7 +25,7 @@ using std::bit_cast;
 // See https://en.cppreference.com/w/cpp/numeric/bit_cast for more
 // information as well as the source of our implementations.
 template <class To, class From>
-std::enable_if_t<
+C10_HOST_DEVICE std::enable_if_t<
     sizeof(To) == sizeof(From) && std::is_trivially_copyable_v<From> &&
         std::is_trivially_copyable_v<To>,
     To>