[flang-commits] [flang] [flang][cuda] Add bind name for __ull2double_rX interfaces (PR #153465)

[Valentin Clement バレンタイン クレメン via flang-commits]

https://github.com/clementval updated https://github.com/llvm/llvm-project/pull/153465

>From 62f484057859ba9ec5061d2ac5476a074d255e20 Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval at gmail.com>
Date: Wed, 13 Aug 2025 11:35:59 -0700
Subject: [PATCH 1/2] [flang][cuda] Add bind name for __ull2double_rX
 interfaces

---
 flang/module/cudadevice.f90                | 14 +++++++-------
 flang/test/Lower/CUDA/cuda-device-proc.cuf |  4 ++++
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/flang/module/cudadevice.f90 b/flang/module/cudadevice.f90
index 6cc18f4cbc18c..03860e200cdd8 100644
--- a/flang/module/cudadevice.f90
+++ b/flang/module/cudadevice.f90
@@ -667,29 +667,29 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
     end function
   end interface
 
-  interface __ull2double_rn
-    attributes(device) double precision function __ull2double_rn(i) bind(c)
+  interface __ull2double_rd
+    attributes(device) double precision function __ull2double_rd(i) bind(c, name='__nv_ull2double_rd')
       !dir$ ignore_tkr (d) i
       integer(8), value :: i
     end function
   end interface
 
-  interface __ull2double_rz
-    attributes(device) double precision function __ull2double_rz(i) bind(c)
+  interface __ull2double_rn
+    attributes(device) double precision function __ull2double_rn(i) bind(c, name='__nv_ull2double_rn')
       !dir$ ignore_tkr (d) i
       integer(8), value :: i
     end function
   end interface
 
   interface __ull2double_ru
-    attributes(device) double precision function __ull2double_ru(i) bind(c)
+    attributes(device) double precision function __ull2double_ru(i) bind(c, name='__nv_ull2double_ru')
       !dir$ ignore_tkr (d) i
       integer(8), value :: i
     end function
   end interface
 
-  interface __ull2double_rd
-    attributes(device) double precision function __ull2double_rd(i) bind(c)
+  interface __ull2double_rz
+    attributes(device) double precision function __ull2double_rz(i) bind(c, name='__nv_ull2double_rz')
       !dir$ ignore_tkr (d) i
       integer(8), value :: i
     end function
diff --git a/flang/test/Lower/CUDA/cuda-device-proc.cuf b/flang/test/Lower/CUDA/cuda-device-proc.cuf
index f9ec0c773fe80..47b92de8f9a89 100644
--- a/flang/test/Lower/CUDA/cuda-device-proc.cuf
+++ b/flang/test/Lower/CUDA/cuda-device-proc.cuf
@@ -83,6 +83,10 @@ attributes(global) subroutine devsub()
   af = __powf(af, af)
   ad = __dsqrt_rd(ad)
   ad = __dsqrt_ru(ad)
+  ad = __ull2double_rd(al)
+  ad = __ull2double_rn(al)
+  ad = __ull2double_ru(al)
+  ad = __ull2double_rz(al)
 end
 
 ! CHECK-LABEL: func.func @_QPdevsub() attributes {cuf.proc_attr = #cuf.cuda_proc<global>}

>From c28cc262b2cf3da49b01814034ad17179189964a Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval at gmail.com>
Date: Wed, 13 Aug 2025 14:20:39 -0700
Subject: [PATCH 2/2] Add missing checks

---
 flang/test/Lower/CUDA/cuda-device-proc.cuf | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/flang/test/Lower/CUDA/cuda-device-proc.cuf b/flang/test/Lower/CUDA/cuda-device-proc.cuf
index 47b92de8f9a89..9dd77a516063d 100644
--- a/flang/test/Lower/CUDA/cuda-device-proc.cuf
+++ b/flang/test/Lower/CUDA/cuda-device-proc.cuf
@@ -157,6 +157,10 @@ end
 ! CHECK: %{{.*}} = fir.call @__nv_powf(%{{.*}}, %{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32, f32) -> f32
 ! CHECK: %{{.*}} = fir.call @__nv_dsqrt_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> f64
 ! CHECK: %{{.*}} = fir.call @__nv_dsqrt_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> f64
+! CHECK: %{{.*}} = fir.call @__nv_ull2double_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f64
+! CHECK: %{{.*}} = fir.call @__nv_ull2double_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f64
+! CHECK: %{{.*}} = fir.call @__nv_ull2double_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f64
+! CHECK: %{{.*}} = fir.call @__nv_ull2double_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f64
 
 subroutine host1()
   integer, device :: a(32)