[flang][cuda] Add bind name for __double2int_XX interfaces (#153279)

Also reorder the interfaces to be in alphabetical order

Author: clementval

flang/module/cudadevice.f90

@@ -450,29 +450,29 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
     end function
   end interface
 
-  interface __double2int_rn
-    attributes(device) integer function __double2int_rn(r) bind(c)
+  interface __double2int_rd
+    attributes(device) integer function __double2int_rd(r) bind(c, name='__nv_double2int_rd')
       !dir$ ignore_tkr (d) r
       double precision, value :: r
     end function
   end interface
 
-  interface __double2int_rz
-    attributes(device) integer function __double2int_rz(r) bind(c)
+  interface __double2int_rn
+    attributes(device) integer function __double2int_rn(r) bind(c, name='__nv_double2int_rn')
       !dir$ ignore_tkr (d) r
       double precision, value :: r
     end function
   end interface
 
   interface __double2int_ru
-    attributes(device) integer function __double2int_ru(r) bind(c)
+    attributes(device) integer function __double2int_ru(r) bind(c, name='__nv_double2int_ru')
       !dir$ ignore_tkr (d) r
       double precision, value :: r
     end function
   end interface
 
-  interface __double2int_rd
-    attributes(device) integer function __double2int_rd(r) bind(c)
+  interface __double2int_rz
+    attributes(device) integer function __double2int_rz(r) bind(c, name='__nv_double2int_rz')
       !dir$ ignore_tkr (d) r
       double precision, value :: r
     end function

flang/test/Lower/CUDA/cuda-device-proc.cuf

@@ -58,6 +58,7 @@ attributes(global) subroutine devsub()
   res = __ffs(al)
   res = __brev(ai)
   resl = __brev(al)
+
   res = __clz(ai)
   res = __clz(al)  
   af = __cosf(af)
@@ -69,6 +70,10 @@ attributes(global) subroutine devsub()
   af = __double2float_rz(ad)
   af = __double2float_ru(ad)
   af = __double2float_rd(ad)
+  ai = __double2int_rd(ad)
+  ai = __double2int_rn(ad)
+  ai = __double2int_ru(ad)
+  ai = __double2int_rz(ad)
   ai = __mul24(ai, ai)
   ai = __umul24(ai, ai)
   af = __powf(af, af)
@@ -129,6 +134,10 @@ end
 ! CHECK: %{{.*}} = fir.call @__nv_double2float_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> f32
 ! CHECK: %{{.*}} = fir.call @__nv_double2float_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> f32
 ! CHECK: %{{.*}} = fir.call @__nv_double2float_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> f32
+! CHECK: %{{.*}} = fir.call @__nv_double2int_rd(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i32
+! CHECK: %{{.*}} = fir.call @__nv_double2int_rn(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i32
+! CHECK: %{{.*}} = fir.call @__nv_double2int_ru(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i32
+! CHECK: %{{.*}} = fir.call @__nv_double2int_rz(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f64) -> i32
 ! CHECK: %{{.*}} = fir.call @__nv_mul24(%{{.*}}, %{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32, i32) -> i32
 ! CHECK: %{{.*}} = fir.call @__nv_umul24(%{{.*}}, %{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32, i32) -> i32
 ! CHECK: %{{.*}} = fir.call @__nv_powf(%{{.*}}, %{{.*}}) proc_attrs<bind_c> fastmath<contract> : (f32, f32) -> f32