From 1eeeea5f8ae80c7c342532ee122e06f890250df5 Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval@gmail.com>
Date: Thu, 14 Aug 2025 17:40:47 -0700
Subject: [PATCH] [flang][cuda] Add missing bind name for __int2double_rn

---
 flang/module/cudadevice.f90              | 2 +-
 flang/test/Lower/CUDA/cuda-libdevice.cuf | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/flang/module/cudadevice.f90 b/flang/module/cudadevice.f90
index ffc3a3b170ca6..5d6fd2e27d911 100644
--- a/flang/module/cudadevice.f90
+++ b/flang/module/cudadevice.f90
@@ -703,7 +703,7 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
   end interface
 
   interface __int2double_rn
-    attributes(device) double precision function __int2double_rn(i) bind(c)
+    attributes(device) double precision function __int2double_rn(i) bind(c, name='__nv_int2double_rn')
       !dir$ ignore_tkr (d) i
       integer, value :: i
     end function
diff --git a/flang/test/Lower/CUDA/cuda-libdevice.cuf b/flang/test/Lower/CUDA/cuda-libdevice.cuf
index f9c5dcc5fc4c3..2dcb4ac4b4f42 100644
--- a/flang/test/Lower/CUDA/cuda-libdevice.cuf
+++ b/flang/test/Lower/CUDA/cuda-libdevice.cuf
@@ -244,3 +244,12 @@ end subroutine
 ! CHECK: %{{.*}} = fir.call @__nv_float2uint_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i32
 ! CHECK: %{{.*}} = fir.call @__nv_float2uint_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i32
 ! CHECK: %{{.*}} = fir.call @__nv_float2uint_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i32
+
+attributes(global) subroutine test_int2double_rn()
+  double precision :: res
+  integer :: r
+  res = __int2double_rn(r)
+end subroutine
+
+! CHECK-LABEL: _QPtest_int2double_rn
+! CHECK: %{{.*}} = fir.call @__nv_int2double_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> f64