From 53b3e71bbcab44510a0c3e0ff9e721a6592d677d Mon Sep 17 00:00:00 2001
From: hev <wangrui@loongson.cn>
Date: Fri, 1 Nov 2024 18:00:00 +0800
Subject: [PATCH] Disable `f16` for LoongArch64 (#722)

Disable `f161` for LoongArch64 due to incorrect code generation on LLVM 19,
which causes failures in `testcrate/tests/conv.rs`. This workaround will
remain in place until llvm/llvm-project#109093 is merged or we upgrade to
LLVM 20.
---
 library/compiler-builtins/configure.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/library/compiler-builtins/configure.rs b/library/compiler-builtins/configure.rs
index e23c0e839359..68b4d68e61bb 100644
--- a/library/compiler-builtins/configure.rs
+++ b/library/compiler-builtins/configure.rs
@@ -64,6 +64,8 @@ pub fn configure_f16_f128(target: &Target) {
         "arm64ec" => (false, false),
         // `f16` crashes <https://github.com/llvm/llvm-project/issues/50374>
         "s390x" => (false, true),
+        // FIXME(llvm): `f16` test failures fixed by <https://github.com/llvm/llvm-project/pull/107791>
+        "loongarch64" => (false, true),
         // `f128` crashes <https://github.com/llvm/llvm-project/issues/96432>
         "mips64" | "mips64r6" => (true, false),
         // `f128` crashes <https://github.com/llvm/llvm-project/issues/101545>