[flang-commits] [flang] [flang][cuda] Add interfaces for __float2ll_rX (PR #153702)

[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/153702

>From c95dfbf4bdca31520670a555fa07dbbd31b3d730 Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval at gmail.com>
Date: Thu, 14 Aug 2025 15:19:07 -0700
Subject: [PATCH] [flang][cuda] Add interfaces for __float2ll_rX

---
 flang/module/cudadevice.f90              | 28 ++++++++++++++++++++++++
 flang/test/Lower/CUDA/cuda-libdevice.cuf | 15 +++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/flang/module/cudadevice.f90 b/flang/module/cudadevice.f90
index a8b1d19a4c1ff..7d18985aca743 100644
--- a/flang/module/cudadevice.f90
+++ b/flang/module/cudadevice.f90
@@ -471,6 +471,34 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
     end function
   end interface
 
+  interface __float2ll_rd
+    attributes(device) integer(8) function __float2ll_rd(r) bind(c, name='__nv_float2ll_rd')
+      !dir$ ignore_tkr (d) r
+      real, value :: r
+    end function
+  end interface
+
+  interface __float2ll_rn
+    attributes(device) integer(8) function __float2ll_rn(r) bind(c, name='__nv_float2ll_rn')
+      !dir$ ignore_tkr (d) r
+      real, value :: r
+    end function
+  end interface
+
+  interface __float2ll_ru
+    attributes(device) integer(8) function __float2ll_ru(r) bind(c, name='__nv_float2ll_ru')
+      !dir$ ignore_tkr (d) r
+      real, value :: r
+    end function
+  end interface
+
+  interface __float2ll_rz
+    attributes(device) integer(8) function __float2ll_rz(r) bind(c, name='__nv_float2ll_rz')
+      !dir$ ignore_tkr (d) r
+      real, value :: r
+    end function
+  end interface
+
   interface __half2float
     attributes(device) real function __half2float(i) bind(c, name='__nv_half2float')
       !dir$ ignore_tkr (d) i
diff --git a/flang/test/Lower/CUDA/cuda-libdevice.cuf b/flang/test/Lower/CUDA/cuda-libdevice.cuf
index 447e09cad747b..072c664fae458 100644
--- a/flang/test/Lower/CUDA/cuda-libdevice.cuf
+++ b/flang/test/Lower/CUDA/cuda-libdevice.cuf
@@ -161,3 +161,18 @@ end subroutine
 ! CHECK: %{{.*}} = fir.call @__nv_double2ull_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i64
 ! CHECK: %{{.*}} = fir.call @__nv_double2ull_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i64
 ! CHECK: %{{.*}} = fir.call @__nv_double2ull_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i64
+
+attributes(global) subroutine test_float2ll_rX()
+  integer(8) :: res
+  real :: r
+  res = __float2ll_rd(r)
+  res = __float2ll_rn(r)
+  res = __float2ll_ru(r)
+  res = __float2ll_rz(r)
+end subroutine
+
+! CHECK-LABEL: _QPtest_float2ll_rx
+! CHECK: %{{.*}} = fir.call @__nv_float2ll_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i64
+! CHECK: %{{.*}} = fir.call @__nv_float2ll_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i64
+! CHECK: %{{.*}} = fir.call @__nv_float2ll_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i64
+! CHECK: %{{.*}} = fir.call @__nv_float2ll_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32) -> i64