From 0d727e54f06e9ab3e15f78f9434b0a52c2197047 Mon Sep 17 00:00:00 2001
From: Trevor Gross <tg@trevorgross.com>
Date: Thu, 19 Mar 2026 22:29:49 +0000
Subject: [PATCH] llvm: Update `reliable_f128` configuration for LLVM22 on
 Sparc

LLVM22 should have resolved issues with the `f128` ABI, meaning we can
now set `cfg(target_has_reliable_f128)` on the platform.

Link: https://github.com/llvm/llvm-project/commit/3e16aef2a650a8c2da4ebd5c58c6a9e261361828
---
 compiler/rustc_codegen_llvm/src/llvm_util.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index 2423880ab869..45e16a735fed 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -394,8 +394,8 @@ fn update_target_reliable_float_cfg(sess: &Session, cfg: &mut TargetConfig) {
         // ABI bugs <https://github.com/rust-lang/rust/issues/125109> et al. (full
         // list at <https://github.com/rust-lang/rust/issues/116909>)
         (Arch::PowerPC | Arch::PowerPC64, _) => false,
-        // ABI unsupported  <https://github.com/llvm/llvm-project/issues/41838>
-        (Arch::Sparc, _) => false,
+        // ABI unsupported  <https://github.com/llvm/llvm-project/issues/41838> (fixed in llvm22)
+        (Arch::Sparc, _) if major < 22 => false,
         // MinGW ABI bugs <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115054>
         (Arch::X86_64, Os::Windows) if *target_env == Env::Gnu && *target_abi != Abi::Llvm => false,
         // There are no known problems on other platforms, so the only requirement is that symbols