`sin(Float16)` returns `NaN`

On #163 as seen on a Vega 10 XL/XT [Radeon RX Vega 56/64] (gfx900)

function f(a)
         @inbounds a[1] = AMDGPU.sin(a[1])
         nothing
end

A = ROCArray([Float16(1.0)])
@roc f(A)

 ModuleID = 'text'
source_filename = "text"
target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-ni:7-ni:10:11:12:13"
target triple = "amdgcn-amd-amdhsa"

;  @ REPL[7]:1 within `f'
define amdgpu_kernel void @_Z12julia_f_438514ROCDeviceArrayI7Float16Li1ELi1EE({ [1 x i64], i8 addrspace(1)* } %0) local_unnamed_addr !dbg !50 {
entry:
  %.fca.1.extract = extractvalue { [1 x i64], i8 addrspace(1)* } %0, 1
;  @ REPL[7]:2 within `f'
; ┌ @ /home/vchuravy/src/AMDGPU/src/device/array.jl:70 within `getindex'
; │┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:81 within `unsafe_load'
; ││┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:9 within `pointerref'
; │││┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:9 within `macro expansion' @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/base.jl:45
      %1 = bitcast i8 addrspace(1)* %.fca.1.extract to half addrspace(1)*, !dbg !52
      %2 = load half, half addrspace(1)* %1, align 2, !dbg !52, !tbaa !66
; └└└└
; ┌ @ /home/vchuravy/src/AMDGPU/src/device/gcn/math.jl:63 within `sin'
; │┌ @ /home/vchuravy/src/AMDGPU/src/device/gcn/helpers.jl:5 within `_intr'
; ││┌ @ /home/vchuravy/src/AMDGPU/src/device/gcn/helpers.jl:5 within `macro expansion' @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/base.jl:45
     %3 = call fastcc half @__ocml_sin_f16(half %2), !dbg !69
; └└└
; ┌ @ /home/vchuravy/src/AMDGPU/src/device/array.jl:76 within `setindex!'
; │┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:84 within `unsafe_store!'
; ││┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:44 within `pointerset'
; │││┌ @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/pointer.jl:44 within `macro expansion' @ /home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/base.jl:45
      store half %3, half addrspace(1)* %1, align 2, !dbg !78, !tbaa !66
      ret void
; └└└└
}

; Function Attrs: convergent norecurse nounwind readnone
define internal fastcc half @__ocml_sin_f16(half %0) unnamed_addr #0 {
  %2 = tail call half @llvm.fabs.f16(half %0)
  %3 = tail call fastcc i32 @__ocmlpriv_trigred_f16(half %2) #4
  %4 = trunc i32 %3 to i16
  %5 = bitcast i16 %4 to half
  %6 = tail call fastcc i32 @__ocmlpriv_sincosred_f16(half %5) #5
  %7 = lshr i32 %6, 16
  %8 = and i32 %3, 65536
  %9 = icmp eq i32 %8, 0
  %10 = select i1 %9, i32 %6, i32 %7
  %11 = icmp sgt i32 %3, 131071
  %12 = select i1 %11, i32 32768, i32 0
  %13 = bitcast half %0 to i16
  %14 = and i16 %13, -32768
  %15 = zext i16 %14 to i32
  %16 = xor i32 %12, %15
  %17 = xor i32 %16, %10
  %18 = trunc i32 %17 to i16
  %19 = tail call i1 @llvm.amdgcn.class.f16(half %2, i32 504)
  %20 = bitcast i16 %18 to half
  %21 = select i1 %19, half 0xH7E00, half %20
  ret half %21
}

; Function Attrs: nounwind readnone speculatable willreturn
declare half @llvm.fabs.f16(half) #1

; Function Attrs: convergent norecurse nounwind readnone
define internal fastcc i32 @__ocmlpriv_trigred_f16(half %0) unnamed_addr #2 {
  %2 = fpext half %0 to float
  %3 = fmul float %2, 0x3FE45F3060000000
  %4 = tail call float @llvm.rint.f32(float %3)
  %5 = tail call fastcc float @__ocml_fmuladd_f32(float %4, float 0xBFF9200000000000, float %2) #5
  %6 = tail call fastcc float @__ocml_fmuladd_f32(float %4, float 0xBF3FA00000000000, float %5) #5
  %7 = tail call fastcc float @__ocml_fmuladd_f32(float %4, float 0xBEB54442E0000000, float %6) #5
  %8 = fptrunc float %7 to half
  %9 = fptosi float %4 to i32
  %10 = bitcast half %8 to i16
  %11 = shl i32 %9, 16
  %12 = and i32 %11, 196608
  %13 = zext i16 %10 to i32
  %14 = or i32 %12, %13
  ret i32 %14
}

; Function Attrs: norecurse nounwind readnone
define internal fastcc i32 @__ocmlpriv_sincosred_f16(half %0) unnamed_addr #3 {
  %2 = fmul half %0, %0
  %3 = tail call half @llvm.fma.f16(half %2, half 0xH202C, half 0xHB155)
  %4 = fmul half %2, %3
  %5 = tail call half @llvm.fma.f16(half %0, half %4, half %0)
  %6 = tail call half @llvm.fma.f16(half %2, half 0xH292D, half 0xHB7FF)
  %7 = tail call half @llvm.fma.f16(half %2, half %6, half 0xH3C00)
  %8 = bitcast half %5 to i16
  %9 = bitcast half %7 to i16
  %10 = zext i16 %9 to i32
  %11 = shl nuw i32 %10, 16
  %12 = zext i16 %8 to i32
  %13 = or i32 %11, %12
  ret i32 %13
}

; Function Attrs: nounwind readnone speculatable willreturn
declare i1 @llvm.amdgcn.class.f16(half, i32) #1

; Function Attrs: nounwind readnone speculatable willreturn
declare half @llvm.fma.f16(half, half, half) #1

; Function Attrs: nounwind readnone speculatable willreturn
declare float @llvm.rint.f32(float) #1

; Function Attrs: norecurse nounwind readnone
define internal fastcc float @__ocml_fmuladd_f32(float %0, float %1, float %2) unnamed_addr #3 {
  %4 = tail call float @llvm.fmuladd.f32(float %0, float %1, float %2)
  ret float %4
}

; Function Attrs: nounwind readnone speculatable willreturn
declare float @llvm.fmuladd.f32(float, float, float) #1

attributes #0 = { convergent norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+16-bit-insts" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { convergent norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { convergent nounwind readnone }
attributes #5 = { nounwind readnone }

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!32 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!33 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!34 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!35 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!36 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!37 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!38 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!39 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!40 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!41 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!42 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !10, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!43 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !16, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!44 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !14, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
!45 = distinct !DICompileUnit(language: DW_LANG_Julia, file: !14, producer: "julia", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !6, nameTableKind: None)
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!54 = !DIFile(filename: "/home/vchuravy/.julia/packages/LLVM/wnejv/src/interop/base.jl", directory: ".")
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!60 = !DILocation(line: 81, scope: !61, inlinedAt: !62)
!61 = distinct !DISubprogram(name: "unsafe_load;", linkageName: "unsafe_load", scope: !57, file: !57, type: !51, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !7, retainedNodes: !6)
!62 = !DILocation(line: 70, scope: !63, inlinedAt: !65)
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!64 = !DIFile(filename: "/home/vchuravy/src/AMDGPU/src/device/array.jl", directory: ".")
!65 = !DILocation(line: 2, scope: !50)
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!67 = !{!"custom_tbaa_addrspace(1)", !68, i64 0}
!68 = !{!"custom_tbaa"}
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!70 = !DILocation(line: 5, scope: !71, inlinedAt: !73)
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!78 = !DILocation(line: 45, scope: !53, inlinedAt: !79)
!79 = !DILocation(line: 44, scope: !56, inlinedAt: !80)
!80 = !DILocation(line: 44, scope: !81, inlinedAt: !82)
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Start with src/device/gcn/math.jl and src/device/gcn/helpers.jl, then reproduce the provided Float16 sin call on the reported gfx900 device and inspect the generated LLVM around __ocml_sin_f16. Done means sin(Float16(1.0)) no longer produces NaN in the shown GPU kernel.