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[flang][cuda] Add bind name for __brev interface #152806

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Merged
merged 3 commits into from
Aug 12, 2025
Merged

[flang][cuda] Add bind name for __brev interface #152806

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397d808
[flang][cuda] Add bind name for __brev interface
clementval Aug 8, 2025
7f91649
Merge branch 'main' into cuf___brev
clementval Aug 12, 2025
0b04c9f
Merge branch 'main' into cuf___brev
clementval Aug 12, 2025
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4 changes: 2 additions & 2 deletions flang/module/cudadevice.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -765,11 +765,11 @@ attributes(device) real(8) function sinpi(x) bind(c,name='__nv_sinpi')
end interface

interface __brev
attributes(device) integer function __brev(i) bind(c)
attributes(device) integer function __brev(i) bind(c, name='__nv_brev')
!dir$ ignore_tkr (d) i
integer, value :: i
end function
attributes(device) integer(8) function __brevll(i) bind(c)
attributes(device) integer(8) function __brevll(i) bind(c, name ='__nv_brevll')
!dir$ ignore_tkr (d) i
integer(8), value :: i
end function
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5 changes: 5 additions & 0 deletions flang/test/Lower/CUDA/cuda-device-proc.cuf
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Expand Up @@ -12,6 +12,7 @@ attributes(global) subroutine devsub()
integer(8) :: time
integer :: smalltime
integer(4) :: res
integer(8) :: resl

call syncthreads()
call syncwarp(1)
Expand Down Expand Up @@ -55,6 +56,8 @@ attributes(global) subroutine devsub()
res = __popc(al)
res = __ffs(ai)
res = __ffs(al)
res = __brev(ai)
resl = __brev(al)
end

! CHECK-LABEL: func.func @_QPdevsub() attributes {cuf.proc_attr = #cuf.cuda_proc<global>}
Expand Down Expand Up @@ -99,6 +102,8 @@ end
! CHECK: %{{.*}} = fir.call @__nv_popcll(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> i32
! CHECK: %{{.*}} = fir.call @__nv_ffs(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> i32
! CHECK: %{{.*}} = fir.call @__nv_ffsll(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> i32
! CHECK: %{{.*}} = fir.call @__nv_brev(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i32) -> i32
! CHECK: %{{.*}} = fir.call @__nv_brevll(%{{.*}}) proc_attrs<bind_c> fastmath<contract> : (i64) -> i64

subroutine host1()
integer, device :: a(32)
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