From 81acbae770748d42f5d368cf156e21fd786fa7f5 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Sun, 25 Jan 2026 21:02:34 +0100
Subject: [PATCH 1/2] Add missing intrinsic translation for `llvm.sqrt.f32`

---
 src/intrinsic/llvm.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/intrinsic/llvm.rs b/src/intrinsic/llvm.rs
index 72fc72d118b7..10183c5ee526 100644
--- a/src/intrinsic/llvm.rs
+++ b/src/intrinsic/llvm.rs
@@ -1062,6 +1062,12 @@ pub fn intrinsic<'gcc, 'tcx>(name: &str, cx: &CodegenCx<'gcc, 'tcx>) -> Function
         "llvm.x86.xgetbv" => "__builtin_ia32_xgetbv",
         // NOTE: this doc specifies the equivalent GCC builtins: http://huonw.github.io/llvmint/llvmint/x86/index.html
         "llvm.sqrt.v2f64" => "__builtin_ia32_sqrtpd",
+        "llvm.sqrt.f32" => {
+            let gcc_name = "__builtin_sqrtf";
+            let func = cx.context.get_builtin_function(gcc_name);
+            cx.functions.borrow_mut().insert(gcc_name.to_string(), func);
+            return func;
+        }
         "llvm.x86.avx512.pmul.dq.512" => "__builtin_ia32_pmuldq512_mask",
         "llvm.x86.avx512.pmulu.dq.512" => "__builtin_ia32_pmuludq512_mask",
         "llvm.x86.avx512.max.ps.512" => "__builtin_ia32_maxps512_mask",

From d3df4bdba52b27d5bdace45b796177c891000f01 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Sun, 25 Jan 2026 21:02:55 +0100
Subject: [PATCH 2/2] Add regression test for
 <https://github.com/rust-lang/rustc_codegen_gcc/issues/288>

---
 tests/run/call-llvm-intrinsics.rs | 38 +++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tests/run/call-llvm-intrinsics.rs

diff --git a/tests/run/call-llvm-intrinsics.rs b/tests/run/call-llvm-intrinsics.rs
new file mode 100644
index 000000000000..86e041c3a2fb
--- /dev/null
+++ b/tests/run/call-llvm-intrinsics.rs
@@ -0,0 +1,38 @@
+// Compiler:
+//
+// Run-time:
+//   status: 0
+
+// FIXME: Remove this test once rustc's `./tests/codegen/riscv-abi/call-llvm-intrinsics.rs`
+// stops ignoring GCC backend.
+
+#![feature(link_llvm_intrinsics)]
+#![allow(internal_features)]
+
+struct A;
+
+impl Drop for A {
+    fn drop(&mut self) {
+        println!("A");
+    }
+}
+
+extern "C" {
+    #[link_name = "llvm.sqrt.f32"]
+    fn sqrt(x: f32) -> f32;
+}
+
+pub fn do_call() {
+    let _a = A;
+
+    unsafe {
+        // Ensure that we `call` LLVM intrinsics instead of trying to `invoke` them
+        // CHECK: store float 4.000000e+00, float* %{{.}}, align 4
+        // CHECK: call float @llvm.sqrt.f32(float %{{.}}
+        sqrt(4.0);
+    }
+}
+
+fn main() {
+    do_call();
+}