llvm/test/Transforms/InstSimplify/fold-bfloat-half-bitcasts.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s

define bfloat @bfloat_to_half() {
; CHECK-LABEL: define bfloat @bfloat_to_half() {
; CHECK-NEXT:    ret bfloat 0xR7C00
;
  %val = bitcast half 0xH7C00 to bfloat
  ret bfloat %val
}

define <2 x bfloat> @bfloat_to_half_vec() {
; CHECK-LABEL: define <2 x bfloat> @bfloat_to_half_vec() {
; CHECK-NEXT:    ret <2 x bfloat> splat (bfloat 0xR7C00)
;
  %val = bitcast <2 x half> splat (half 0xH7C00) to <2 x bfloat>
  ret <2 x bfloat> %val
}

define half @half_to_bfloat() {
; CHECK-LABEL: define half @half_to_bfloat() {
; CHECK-NEXT:    ret half 0xH7C00
;
  %val = bitcast bfloat 0xR7C00 to half
  ret half %val
}

define <2 x half> @half_to_bfloat_vec() {
; CHECK-LABEL: define <2 x half> @half_to_bfloat_vec() {
; CHECK-NEXT:    ret <2 x half> splat (half 0xH7C00)
;
  %val = bitcast <2 x bfloat> splat (bfloat 0xR7C00) to <2 x half>
  ret <2 x half> %val
}

define half @recursive() {
; CHECK-LABEL: define half @recursive() {
; CHECK-NEXT:    ret half 0xH7C00
;
  %first = bitcast bfloat 0xR7C00 to half
  %second = bitcast half %first to bfloat
  %third = bitcast bfloat %second to half
  ret half %third
}