[flang-commits] [flang] ca9ddd5 - [flang][cuda] Add interfaces for __ll2float_rX (#153694)

[via flang-commits]

Author: Valentin Clement (バレンタイン クレメン)
Date: 2025-08-14T15:35:02-07:00
New Revision: ca9ddd54b77020322a94a8032276b46cc1046522

URL: https://github.com/llvm/llvm-project/commit/ca9ddd54b77020322a94a8032276b46cc1046522
DIFF: https://github.com/llvm/llvm-project/commit/ca9ddd54b77020322a94a8032276b46cc1046522.diff

LOG: [flang][cuda] Add interfaces for __ll2float_rX (#153694)

Added: 
    

Modified: 
    flang/module/cudadevice.f90
    flang/test/Lower/CUDA/cuda-libdevice.cuf

Removed: 
    


################################################################################
diff  --git a/flang/module/cudadevice.f90 b/flang/module/cudadevice.f90
index a8b1d19a4c1ff..ac97a5d27dbd2 100644
--- a/flang/module/cudadevice.f90
+++ b/flang/module/cudadevice.f90
@@ -681,6 +681,34 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
     end function
   end interface
 
+  interface __ll2float_rd
+    attributes(device) real function __ll2float_rd(i) bind(c, name='__nv_ll2float_rd')
+      !dir$ ignore_tkr (d) i
+      integer(8), value :: i
+    end function
+  end interface
+
+  interface __ll2float_rn
+    attributes(device) real function __ll2float_rn(i) bind(c, name='__nv_ll2float_rn')
+      !dir$ ignore_tkr (d) i
+      integer(8), value :: i
+    end function
+    end interface
+
+  interface __ll2float_ru
+    attributes(device) real function __ll2float_ru(i) bind(c, name='__nv_ll2float_ru')
+      !dir$ ignore_tkr (d) i
+      integer(8), value :: i
+    end function
+  end interface
+
+  interface __ll2float_rz
+    attributes(device) real function __ll2float_rz(i) bind(c, name='__nv_ll2float_rz')
+      !dir$ ignore_tkr (d) i
+      integer(8), value :: i
+    end function
+  end interface
+
   interface __ll2double_rd
     attributes(device) double precision function __ll2double_rd(i) bind(c, name='__nv_ll2double_rd')
       !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..c381485ec1761 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_ll2float_rX()
+  real :: res
+  integer(8) :: i
+  res = __ll2float_rd(i)
+  res = __ll2float_rn(i)
+  res = __ll2float_ru(i)
+  res = __ll2float_rz(i)
+end subroutine
+
+! CHECK-LABEL: _QPtest_ll2float_rx
+! CHECK: %{{.*}} = fir.call @__nv_ll2float_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> f32
+! 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