[llvm] Remove target compatibility restrictions for float128 (PR #169292)

[Chandler Carruth via llvm-commits]

https://github.com/chandlerc created https://github.com/llvm/llvm-project/pull/169292

The restrictions here aren't nearly as much about the OS as the compiler and architecture, but the Bazel restriction was OS-based. Everything seems to work well on even Arm64 macOS, and I would expect most BSDs and other OSes to work well with Clang's support on x86-64.

The source code here already handles detecting when there is compiler support for the type. And the users of this don't `select` or do anything else to conditionally include the header, so it seems better to not restrict access to the header from the build system, and instead continue making the source code compatible or a no-op on relevant configurations.

>From 94325bae07213d2dd8263945f5362720dee7bcb9 Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc at gmail.com>
Date: Sun, 23 Nov 2025 23:26:06 -0800
Subject: [PATCH] Remove target compatibility restrictions for float128

The restrictions here aren't nearly as much about the OS as the compiler
and architecture, but the Bazel restriction was OS-based. Everything
seems to work well on even Arm64 macOS, and I would expect most BSDs and
other OSes to work well with Clang's support on x86-64.

The source code here already handles detecting when there is compiler
support for the type. And the users of this don't `select` or do
anything else to conditionally include the header, so it seems better to
not restrict access to the header from the build system, and instead
continue making the source code compatible or a no-op on relevant
configurations.
---
 utils/bazel/llvm-project-overlay/libc/BUILD.bazel | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
index bd48222856f22..e3962d9b5f95b 100644
--- a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
@@ -171,11 +171,6 @@ libc_support_library(
 libc_support_library(
     name = "llvm_libc_types_float128",
     hdrs = ["include/llvm-libc-types/float128.h"],
-    target_compatible_with = select({
-        "@platforms//os:linux": [],
-        "@platforms//os:windows": [],
-        "//conditions:default": ["@platforms//:incompatible"],
-    }),
     deps = [":llvm_libc_macros_float_macros"],
 )