llvm-mirror/test/CodeGen/NVPTX/half.ll

; RUN: llc < %s -march=nvptx | FileCheck %s

define void @test_load_store(half addrspace(1)* %in, half addrspace(1)* %out) {
; CHECK-LABEL: @test_load_store
; CHECK: ld.global.b16 [[TMP:%h[0-9]+]], [{{%r[0-9]+}}]
; CHECK: st.global.b16 [{{%r[0-9]+}}], [[TMP]]
  %val = load half, half addrspace(1)* %in
  store half %val, half addrspace(1) * %out
  ret void
}

define void @test_bitcast_from_half(half addrspace(1)* %in, i16 addrspace(1)* %out) {
; CHECK-LABEL: @test_bitcast_from_half
; CHECK: ld.global.b16 [[TMP:%h[0-9]+]], [{{%r[0-9]+}}]
; CHECK: st.global.b16 [{{%r[0-9]+}}], [[TMP]]
  %val = load half, half addrspace(1) * %in
  %val_int = bitcast half %val to i16
  store i16 %val_int, i16 addrspace(1)* %out
  ret void
}

define void @test_bitcast_to_half(half addrspace(1)* %out, i16 addrspace(1)* %in) {
; CHECK-LABEL: @test_bitcast_to_half
; CHECK: ld.global.u16 [[TMP:%rs[0-9]+]], [{{%r[0-9]+}}]
; CHECK: st.global.u16 [{{%r[0-9]+}}], [[TMP]]
  %val = load i16, i16 addrspace(1)* %in
  %val_fp = bitcast i16 %val to half
  store half %val_fp, half addrspace(1)* %out
  ret void
}

define void @test_extend32(half addrspace(1)* %in, float addrspace(1)* %out) {
; CHECK-LABEL: @test_extend32
; CHECK: cvt.f32.f16

  %val16 = load half, half addrspace(1)* %in
  %val32 = fpext half %val16 to float
  store float %val32, float addrspace(1)* %out
  ret void
}

define void @test_extend64(half addrspace(1)* %in, double addrspace(1)* %out) {
; CHECK-LABEL: @test_extend64
; CHECK: cvt.f64.f16

  %val16 = load half, half addrspace(1)* %in
  %val64 = fpext half %val16 to double
  store double %val64, double addrspace(1)* %out
  ret void
}

define void @test_trunc32(float addrspace(1)* %in, half addrspace(1)* %out) {
; CHECK-LABEL: test_trunc32
; CHECK: cvt.rn.f16.f32

  %val32 = load float, float addrspace(1)* %in
  %val16 = fptrunc float %val32 to half
  store half %val16, half addrspace(1)* %out
  ret void
}

define void @test_trunc64(double addrspace(1)* %in, half addrspace(1)* %out) {
; CHECK-LABEL: @test_trunc64
; CHECK: cvt.rn.f16.f64

  %val32 = load double, double addrspace(1)* %in
  %val16 = fptrunc double %val32 to half
  store half %val16, half addrspace(1)* %out
  ret void
}