xref: /llvm-project/llvm/test/CodeGen/ARM/bf16-imm.ll (revision 3651635ecad1a5a62321bcd79dcbf20855ceb443)

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=armv8.6a-none-none-eabi < %s | FileCheck %s --check-prefixes=CHECK
; RUN: llc -mtriple=armv8.6a-none-none-eabi -mattr=+bf16,+neon < %s | FileCheck %s --check-prefixes=CHECK
; RUN: llc -mtriple=armv8.6a-none-none-eabi -mattr=+bf16,+neon,+fullfp16 < %s | FileCheck %s --check-prefix=CHECK-FP16
; RUN: llc -mtriple=armv8.6a-none-none-eabi -mattr=+bf16,+neon -float-abi=hard < %s | FileCheck %s --check-prefix=CHECK-HARD

define bfloat @bitcast_zero() {
; CHECK-LABEL: bitcast_zero:
; CHECK:       @ %bb.0:
; CHECK-NEXT:    .pad #4
; CHECK-NEXT:    sub sp, sp, #4
; CHECK-NEXT:    mov r0, #0
; CHECK-NEXT:    strh r0, [sp, #2]
; CHECK-NEXT:    ldrh r0, [sp, #2]
; CHECK-NEXT:    add sp, sp, #4
; CHECK-NEXT:    bx lr
;
; CHECK-FP16-LABEL: bitcast_zero:
; CHECK-FP16:       @ %bb.0:
; CHECK-FP16-NEXT:    mov r0, #0
; CHECK-FP16-NEXT:    vmov.f16 s0, r0
; CHECK-FP16-NEXT:    vmov r0, s0
; CHECK-FP16-NEXT:    bx lr
;
; CHECK-HARD-LABEL: bitcast_zero:
; CHECK-HARD:       @ %bb.0:
; CHECK-HARD-NEXT:    .pad #4
; CHECK-HARD-NEXT:    sub sp, sp, #4
; CHECK-HARD-NEXT:    mov r0, #0
; CHECK-HARD-NEXT:    strh r0, [sp, #2]
; CHECK-HARD-NEXT:    ldrh r0, [sp, #2]
; CHECK-HARD-NEXT:    vmov s0, r0
; CHECK-HARD-NEXT:    add sp, sp, #4
; CHECK-HARD-NEXT:    bx lr
  %z = bitcast i16 0 to bfloat
  ret bfloat %z
}

define bfloat @zero() {
; CHECK-LABEL: zero:
; CHECK:       @ %bb.0:
; CHECK-NEXT:    adr r0, .LCPI1_0
; CHECK-NEXT:    ldrh r0, [r0]
; CHECK-NEXT:    bx lr
; CHECK-NEXT:    .p2align 1
; CHECK-NEXT:  @ %bb.1:
; CHECK-NEXT:  .LCPI1_0:
; CHECK-NEXT:    .short 0x0000 @ bfloat 0
;
; CHECK-FP16-LABEL: zero:
; CHECK-FP16:       @ %bb.0:
; CHECK-FP16-NEXT:    vldr.16 s0, .LCPI1_0
; CHECK-FP16-NEXT:    vmov r0, s0
; CHECK-FP16-NEXT:    bx lr
; CHECK-FP16-NEXT:    .p2align 1
; CHECK-FP16-NEXT:  @ %bb.1:
; CHECK-FP16-NEXT:  .LCPI1_0:
; CHECK-FP16-NEXT:    .short 0x0000 @ bfloat 0
;
; CHECK-HARD-LABEL: zero:
; CHECK-HARD:       @ %bb.0:
; CHECK-HARD-NEXT:    adr r0, .LCPI1_0
; CHECK-HARD-NEXT:    ldrh r0, [r0]
; CHECK-HARD-NEXT:    vmov s0, r0
; CHECK-HARD-NEXT:    bx lr
; CHECK-HARD-NEXT:    .p2align 1
; CHECK-HARD-NEXT:  @ %bb.1:
; CHECK-HARD-NEXT:  .LCPI1_0:
; CHECK-HARD-NEXT:    .short 0x0000 @ bfloat 0
  ret bfloat 0xR0000
}

define bfloat @bitcast_tenk() {
; CHECK-LABEL: bitcast_tenk:
; CHECK:       @ %bb.0:
; CHECK-NEXT:    .pad #4
; CHECK-NEXT:    sub sp, sp, #4
; CHECK-NEXT:    movw r0, #10000
; CHECK-NEXT:    strh r0, [sp, #2]
; CHECK-NEXT:    ldrh r0, [sp, #2]
; CHECK-NEXT:    add sp, sp, #4
; CHECK-NEXT:    bx lr
;
; CHECK-FP16-LABEL: bitcast_tenk:
; CHECK-FP16:       @ %bb.0:
; CHECK-FP16-NEXT:    movw r0, #10000
; CHECK-FP16-NEXT:    vmov.f16 s0, r0
; CHECK-FP16-NEXT:    vmov r0, s0
; CHECK-FP16-NEXT:    bx lr
;
; CHECK-HARD-LABEL: bitcast_tenk:
; CHECK-HARD:       @ %bb.0:
; CHECK-HARD-NEXT:    .pad #4
; CHECK-HARD-NEXT:    sub sp, sp, #4
; CHECK-HARD-NEXT:    movw r0, #10000
; CHECK-HARD-NEXT:    strh r0, [sp, #2]
; CHECK-HARD-NEXT:    ldrh r0, [sp, #2]
; CHECK-HARD-NEXT:    vmov s0, r0
; CHECK-HARD-NEXT:    add sp, sp, #4
; CHECK-HARD-NEXT:    bx lr
  %z = bitcast i16 10000 to bfloat
  ret bfloat %z
}

define bfloat @minus0() {
; CHECK-LABEL: minus0:
; CHECK:       @ %bb.0:
; CHECK-NEXT:    adr r0, .LCPI3_0
; CHECK-NEXT:    ldrh r0, [r0]
; CHECK-NEXT:    bx lr
; CHECK-NEXT:    .p2align 1
; CHECK-NEXT:  @ %bb.1:
; CHECK-NEXT:  .LCPI3_0:
; CHECK-NEXT:    .short 0x8000 @ bfloat -0
;
; CHECK-FP16-LABEL: minus0:
; CHECK-FP16:       @ %bb.0:
; CHECK-FP16-NEXT:    vldr.16 s0, .LCPI3_0
; CHECK-FP16-NEXT:    vmov r0, s0
; CHECK-FP16-NEXT:    bx lr
; CHECK-FP16-NEXT:    .p2align 1
; CHECK-FP16-NEXT:  @ %bb.1:
; CHECK-FP16-NEXT:  .LCPI3_0:
; CHECK-FP16-NEXT:    .short 0x8000 @ bfloat -0
;
; CHECK-HARD-LABEL: minus0:
; CHECK-HARD:       @ %bb.0:
; CHECK-HARD-NEXT:    adr r0, .LCPI3_0
; CHECK-HARD-NEXT:    ldrh r0, [r0]
; CHECK-HARD-NEXT:    vmov s0, r0
; CHECK-HARD-NEXT:    bx lr
; CHECK-HARD-NEXT:    .p2align 1
; CHECK-HARD-NEXT:  @ %bb.1:
; CHECK-HARD-NEXT:  .LCPI3_0:
; CHECK-HARD-NEXT:    .short 0x8000 @ bfloat -0
  ret bfloat 0xR8000
}