[libc][NFC] land long double table for printf

The Mega Table that printf uses for long doubles with some flags is too
large for the linters, and so has been split out from the main patch.
The main patch: https://reviews.llvm.org/D150399

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D152470

libc/src/stdio/printf_core/CMakeLists.txt

@@ -99,8 +99,8 @@ add_object_library(
     libc.src.__support.uint128
     libc.src.__support.integer_to_string
     libc.src.__support.float_to_string
-  # COMPILE_OPTIONS
-    # -DLIBC_COPT_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE
+  COMPILE_OPTIONS
+    -DLIBC_COPT_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE
 )
 
 

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

@@ -312,8 +312,7 @@ libc_support_library(
         "src/__support/ryu_constants.h",
         "src/__support/ryu_long_double_constants.h",
     ],
-    # This is temporarily commented out since the table is too large to land in the same patch as the rest of the changes.
-    # defines = ["LIBC_COPT_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE"],
+    defines = ["LIBC_COPT_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE"],
     deps = [
         ":__support_common",
         ":__support_cpp_type_traits",