[flang-commits] [flang] [flang][cuda] Add interfaces for __int2float_rX (PR #153708)

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

https://github.com/clementval created https://github.com/llvm/llvm-project/pull/153708

None

>From 5d14255ef0689f492e85b40373becfa5e9959391 Mon Sep 17 00:00:00 2001
From: Valentin Clement <clementval at gmail.com>
Date: Thu, 14 Aug 2025 15:46:50 -0700
Subject: [PATCH] [flang][cuda] Add interfaces for __int2float_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 ac97a5d27dbd2..8e3f7654af1d5 100644
--- a/flang/module/cudadevice.f90
+++ b/flang/module/cudadevice.f90
@@ -583,6 +583,34 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
     end function
   end interface
 
+  interface __int2float_rd
+    attributes(device) real function __int2float_rd(i) bind(c, name='__nv_int2float_rd')
+      !dir$ ignore_tkr (d) i
+      integer, value :: i
+    end function
+  end interface
+
+  interface __int2float_rn
+    attributes(device) real function __int2float_rn(i) bind(c, name='__nv_int2float_rn')
+      !dir$ ignore_tkr (d) i
+      integer, value :: i
+    end function
+  end interface
+
+  interface __int2float_ru
+    attributes(device) real function __int2float_ru(i) bind(c, name='__nv_int2float_ru')
+      !dir$ ignore_tkr (d) i
+      integer, value :: i
+    end function
+  end interface
+
+  interface __int2float_rz
+    attributes(device) real function __int2float_rz(i) bind(c, name='__nv_int2float_rz')
+      !dir$ ignore_tkr (d) i
+      integer, value :: i
+    end function
+  end interface
+
   interface __int2double_rn
     attributes(device) double precision function __int2double_rn(i) bind(c)
       !dir$ ignore_tkr (d) i
diff --git a/flang/test/Lower/CUDA/cuda-libdevice.cuf b/flang/test/Lower/CUDA/cuda-libdevice.cuf
index c381485ec1761..4e5118feef76d 100644
--- a/flang/test/Lower/CUDA/cuda-libdevice.cuf
+++ b/flang/test/Lower/CUDA/cuda-libdevice.cuf
@@ -176,3 +176,18 @@ end subroutine
 ! CHECK: %{{.*}} = fir.call @__nv_ll2float_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f32
 ! CHECK: %{{.*}} = fir.call @__nv_ll2float_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f32
 ! CHECK: %{{.*}} = fir.call @__nv_ll2float_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f32
+
+attributes(global) subroutine test_int2float_rX()
+  real :: res
+  integer :: i
+  res = __int2float_rd(i)
+  res = __int2float_rn(i)
+  res = __int2float_ru(i)
+  res = __int2float_rz(i)
+end subroutine
+
+! CHECK-LABEL: _QPtest_int2float_rx
+! CHECK: %{{.*}} = fir.call @__nv_int2float_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> f32
+! CHECK: %{{.*}} = fir.call @__nv_int2float_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> f32
+! CHECK: %{{.*}} = fir.call @__nv_int2float_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> f32
+! CHECK: %{{.*}} = fir.call @__nv_int2float_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> f32