[libc][bazel] split support_standalone_cpp target

[michaelrj]

Summary

previously the support_standalone_cpp target contained all of the files
in the __support/cpp folder. This change splits these out so that only
what is needed is included. In addition, this change adds the new
support files that previously didn't have targets.

[michaelrj]

fix errors

[gchatelet]

utils/bazel/llvm-project-overlay/libc/BUILD.bazel

88–90

[nit] Can we make the hdrs field a one liner?

[michaelrj]

address comments

utils/bazel/llvm-project-overlay/libc/BUILD.bazel

hdrs = [
         "src/__support/architectures.h",
         "src/__support/common.h",
         "src/__support/endian.h",
         "src/__support/sanitizer.h",
     ],
 )
 
 cc_library(
-    name = "__support_standalone_cpp",
+    name = "__support_cpp_array",
+    hdrs = ["src/__support/CPP/Array.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_array_ref",
+    hdrs = ["src/__support/CPP/ArrayRef.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_bit",
+    hdrs = ["src/__support/CPP/Bit.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_bitset",
+    hdrs = ["src/__support/CPP/Bitset.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_functional",
+    hdrs = ["src/__support/CPP/Functional.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_limits",
+    hdrs = ["src/__support/CPP/Limits.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_string_view",
+    hdrs = ["src/__support/CPP/StringView.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_type_traits",
     hdrs = [
-        "src/__support/CPP/Array.h",
-        "src/__support/CPP/ArrayRef.h",
-        "src/__support/CPP/Bit.h",
-        "src/__support/CPP/Bitset.h",
-        "src/__support/CPP/Functional.h",
-        "src/__support/CPP/Limits.h",
-        "src/__support/CPP/StringView.h",
         "src/__support/CPP/TypeTraits.h",
     ],
     deps = [":libc_root"],
 )
 
 cc_library(
+    name = "__support_cpp_utility",
+    hdrs = ["src/__support/CPP/Utility.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_vector",
+    hdrs = ["src/__support/CPP/vector.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
+    name = "__support_cpp_atomic",
+    hdrs = ["src/__support/CPP/atomic.h",],
+    deps = [":libc_root"],
+)
+
+cc_library(
     name = "__support_integer_operations",
     hdrs = ["src/__support/integer_operations.h"],
-    deps = [":__support_standalone_cpp"],
+    deps = [":__support_cpp_type_traits"],
 )
 
 cc_library(
     name = "__support_ctype_utils",
     hdrs = ["src/__support/ctype_utils.h"],
 )
 
 cc_library(
     name = "__support_str_to_integer",
     hdrs = ["src/__support/str_to_integer.h"],
     deps = [
+        ":__support_cpp_limits",
         ":__support_ctype_utils",
-        ":__support_standalone_cpp",
     ],
 )
 
 fputil_common_hdrs = [
     "src/__support/FPUtil/BasicOperations.h",
     "src/__support/FPUtil/DivisionAndRemainderOperations.h",
     "src/__support/FPUtil/FEnvImpl.h",
     "src/__support/FPUtil/FPBits.h",
fputil_hdrs = selects.with_or({
     ],
 })
 
 cc_library(
     name = "__support_fputil",
     hdrs = fputil_hdrs,
     deps = [
         ":__support_common",
-        ":__support_standalone_cpp",
+        ":__support_cpp_bit",
+        ":__support_cpp_type_traits",
         ":libc_root",
     ],
 )
 
 sqrt_common_hdrs = [
     "src/__support/FPUtil/sqrt.h",
     "src/__support/FPUtil/generic/sqrt.h",
     "src/__support/FPUtil/generic/sqrt_80_bit_long_double.h",

 })
 
 cc_library(
     name = "__support_fputil_sqrt",
     hdrs = sqrt_hdrs,
     deps = [
         ":__support_common",
         ":__support_fputil",
-        ":__support_standalone_cpp",
         ":libc_root",
     ],
 )
 
 ################################ fenv targets ################################
 
 libc_function(
     name = "fetestexcept",

 
 ################################ math targets ################################
 
 cc_library(
     name = "math_utils",
     srcs = ["src/math/generic/math_utils.cpp"],
     hdrs = ["src/math/generic/math_utils.h"],
     deps = [
+        "__support_cpp_bit",
+        "__support_cpp_type_traits",
         ":__support_common",
-        ":__support_standalone_cpp",
         ":libc_root",
     ],
 )
 
 cc_library(
     name = "sincosf_utils",
     srcs = ["src/math/generic/sincosf_data.cpp"],
     hdrs = ["src/math/generic/sincosf_utils.h"],
no_sanitize_features = [
     "-ubsan",
 ]
 
 cc_library(
     name = "string_utils",
     hdrs = ["src/string/string_utils.h"],
     deps = [
         ":__support_common",
-        ":__support_standalone_cpp",
+        ":__support_cpp_bitset",
         ":libc_root",
     ],
 )
 
 cc_library(
     name = "string_memory_utils",
     hdrs = [
         "src/string/memory_utils/elements.h",
         "src/string/memory_utils/elements_aarch64.h",
         "src/string/memory_utils/elements_x86.h",
         "src/string/memory_utils/utils.h",
     ],
     textual_hdrs = [
         "src/string/memory_utils/bcmp_implementations.h",
         "src/string/memory_utils/memcmp_implementations.h",
         "src/string/memory_utils/memcpy_implementations.h",
         "src/string/memory_utils/memset_implementations.h",
     ],
     deps = [
         ":__support_common",
-        ":__support_standalone_cpp",
+        ":__support_cpp_bit",
         ":libc_root",
     ],
 )
 
 libc_function(
     name = "memchr",
     srcs = ["src/string/memchr.cpp"],
     hdrs = ["src/string/memchr.h"],

 )
 
 libc_function(
     name = "strspn",
     srcs = ["src/string/strspn.cpp"],
     hdrs = ["src/string/strspn.h"],
     deps = [
         ":__support_common",
-        ":__support_standalone_cpp",
+        ":__support_cpp_bitset",
         ":string_utils",
     ],
 )
 
 libc_function(
     name = "strpbrk",
     srcs = ["src/string/strpbrk.cpp"],
     hdrs = ["src/string/strpbrk.h"],