[clang] [clang][LoongArch] Guard FCSR intrinsics with __loongarch_hard_float (PR #176545)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: hev (heiher)

<details>
<summary>Changes</summary>

Link: https://gcc.gnu.org/pipermail/gcc-patches/2025-December/703313.html

---
Full diff: https://github.com/llvm/llvm-project/pull/176545.diff


1 Files Affected:

- (modified) clang/lib/Headers/larchintrin.h (+2) 


``````````diff
diff --git a/clang/lib/Headers/larchintrin.h b/clang/lib/Headers/larchintrin.h
index a1247d12e21f8..3f0fab2b570e0 100644
--- a/clang/lib/Headers/larchintrin.h
+++ b/clang/lib/Headers/larchintrin.h
@@ -120,10 +120,12 @@ extern __inline int
 
 #define __ibar(/*ui15*/ _1) __builtin_loongarch_ibar((_1))
 
+#ifdef __loongarch_hard_float
 #define __movfcsr2gr(/*ui5*/ _1) __builtin_loongarch_movfcsr2gr((_1));
 
 #define __movgr2fcsr(/*ui5*/ _1, _2)                                           \
   __builtin_loongarch_movgr2fcsr((_1), (unsigned int)_2);
+#endif
 
 #define __syscall(/*ui15*/ _1) __builtin_loongarch_syscall((_1))
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/176545