llvm/test/CodeGen/AArch64/avoid-pre-trunc.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
; RUN: llc -mtriple=aarch64 < %s | FileCheck %s

define <16 x i8> @lower_trunc_16xi8(i16 %a, i16 %b, i16 %c, i16 %d, i16 %e, i16 %f, i16 %g, i16 %h, i16 %i, i16 %j, i16 %k, i16 %l, i16 %m, i16 %n, i16 %o, i16 %p) {
; CHECK-LABEL: lower_trunc_16xi8:
; CHECK:       // %bb.0:
; CHECK-NEXT:    fmov s0, w0
; CHECK-NEXT:    mov x8, sp
; CHECK-NEXT:    mov v0.b[1], w1
; CHECK-NEXT:    mov v0.b[2], w2
; CHECK-NEXT:    mov v0.b[3], w3
; CHECK-NEXT:    mov v0.b[4], w4
; CHECK-NEXT:    mov v0.b[5], w5
; CHECK-NEXT:    mov v0.b[6], w6
; CHECK-NEXT:    mov v0.b[7], w7
; CHECK-NEXT:    ld1 { v0.b }[8], [x8]
; CHECK-NEXT:    add x8, sp, #8
; CHECK-NEXT:    ld1 { v0.b }[9], [x8]
; CHECK-NEXT:    add x8, sp, #16
; CHECK-NEXT:    ld1 { v0.b }[10], [x8]
; CHECK-NEXT:    add x8, sp, #24
; CHECK-NEXT:    ld1 { v0.b }[11], [x8]
; CHECK-NEXT:    add x8, sp, #32
; CHECK-NEXT:    ld1 { v0.b }[12], [x8]
; CHECK-NEXT:    add x8, sp, #40
; CHECK-NEXT:    ld1 { v0.b }[13], [x8]
; CHECK-NEXT:    add x8, sp, #48
; CHECK-NEXT:    ld1 { v0.b }[14], [x8]
; CHECK-NEXT:    add x8, sp, #56
; CHECK-NEXT:    ld1 { v0.b }[15], [x8]
; CHECK-NEXT:    add v1.16b, v0.16b, v0.16b
; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
; CHECK-NEXT:    ret
  %a1 = insertelement <16 x i16> poison, i16 %a, i16 0
  %b1 = insertelement <16 x i16> %a1, i16 %b, i16 1
  %c1 = insertelement <16 x i16> %b1, i16 %c, i16 2
  %d1 = insertelement <16 x i16> %c1, i16 %d, i16 3
  %e1 = insertelement <16 x i16> %d1, i16 %e, i16 4
  %f1 = insertelement <16 x i16> %e1, i16 %f, i16 5
  %g1 = insertelement <16 x i16> %f1, i16 %g, i16 6
  %h1 = insertelement <16 x i16> %g1, i16 %h, i16 7
  %i1 = insertelement <16 x i16> %h1, i16 %i, i16 8
  %j1 = insertelement <16 x i16> %i1, i16 %j, i16 9
  %k1 = insertelement <16 x i16> %j1, i16 %k, i16 10
  %l1 = insertelement <16 x i16> %k1, i16 %l, i16 11
  %m1 = insertelement <16 x i16> %l1, i16 %m, i16 12
  %n1 = insertelement <16 x i16> %m1, i16 %n, i16 13
  %o1 = insertelement <16 x i16> %n1, i16 %o, i16 14
  %p1 = insertelement <16 x i16> %o1, i16 %p, i16 15
  %t = trunc <16 x i16> %p1 to <16 x i8>
  %s = add <16 x i16> %p1, %p1
  %t2 = trunc <16 x i16> %s to <16 x i8>
  %pro = xor <16 x i8> %t, %t2
  ret <16 x i8> %pro
}

define <8 x i16> @lower_trunc_8xi16(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
; CHECK-LABEL: lower_trunc_8xi16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    fmov s0, w0
; CHECK-NEXT:    mov v0.h[1], w1
; CHECK-NEXT:    mov v0.h[2], w2
; CHECK-NEXT:    mov v0.h[3], w3
; CHECK-NEXT:    mov v0.h[4], w4
; CHECK-NEXT:    mov v0.h[5], w5
; CHECK-NEXT:    mov v0.h[6], w6
; CHECK-NEXT:    mov v0.h[7], w7
; CHECK-NEXT:    add v1.8h, v0.8h, v0.8h
; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
; CHECK-NEXT:    ret
  %a1 = insertelement <8 x i32> poison, i32 %a, i32 0
  %b1 = insertelement <8 x i32> %a1, i32 %b, i32 1
  %c1 = insertelement <8 x i32> %b1, i32 %c, i32 2
  %d1 = insertelement <8 x i32> %c1, i32 %d, i32 3
  %e1 = insertelement <8 x i32> %d1, i32 %e, i32 4
  %f1 = insertelement <8 x i32> %e1, i32 %f, i32 5
  %g1 = insertelement <8 x i32> %f1, i32 %g, i32 6
  %h1 = insertelement <8 x i32> %g1, i32 %h, i32 7
  %t = trunc <8 x i32> %h1 to <8 x i16>
  %s = add <8 x i32> %h1, %h1
  %t2 = trunc <8 x i32> %s to <8 x i16>
  %o = xor <8 x i16> %t, %t2
  ret <8 x i16> %o
}

define <4 x i32> @lower_trunc_4xi32(i64 %a, i64 %b, i64 %c, i64 %d) {
; CHECK-LABEL: lower_trunc_4xi32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    fmov s0, w0
; CHECK-NEXT:    mov v0.s[1], w1
; CHECK-NEXT:    mov v0.s[2], w2
; CHECK-NEXT:    mov v0.s[3], w3
; CHECK-NEXT:    add v1.4s, v0.4s, v0.4s
; CHECK-NEXT:    eor v0.16b, v0.16b, v1.16b
; CHECK-NEXT:    ret
  %a1 = insertelement <4 x i64> poison, i64 %a, i64 0
  %b1 = insertelement <4 x i64> %a1, i64 %b, i64 1
  %c1 = insertelement <4 x i64> %b1, i64 %c, i64 2
  %d1 = insertelement <4 x i64> %c1, i64 %d, i64 3
  %t = trunc <4 x i64> %d1 to <4 x i32>
  %s = add <4 x i64> %d1, %d1
  %t2 = trunc <4 x i64> %s to <4 x i32>
  %o = xor <4 x i32> %t, %t2
  ret <4 x i32> %o
}

define <8 x i32> @lower_trunc_8xi32(i64 %a, i64 %b, i64 %c, i64 %d, i64 %e, i64 %f, i64 %g, i64 %h) {
; CHECK-LABEL: lower_trunc_8xi32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    fmov d0, x0
; CHECK-NEXT:    fmov d1, x6
; CHECK-NEXT:    fmov d2, x2
; CHECK-NEXT:    fmov d3, x4
; CHECK-NEXT:    mov v1.d[1], x7
; CHECK-NEXT:    mov v2.d[1], x3
; CHECK-NEXT:    mov v0.d[1], x1
; CHECK-NEXT:    mov v3.d[1], x5
; CHECK-NEXT:    uzp1 v0.4s, v0.4s, v2.4s
; CHECK-NEXT:    uzp1 v1.4s, v3.4s, v1.4s
; CHECK-NEXT:    add v3.4s, v0.4s, v0.4s
; CHECK-NEXT:    add v2.4s, v1.4s, v1.4s
; CHECK-NEXT:    eor v0.16b, v0.16b, v3.16b
; CHECK-NEXT:    eor v1.16b, v1.16b, v2.16b
; CHECK-NEXT:    ret
  %a1 = insertelement <8 x i64> poison, i64 %a, i64 0
  %b1 = insertelement <8 x i64> %a1, i64 %b, i64 1
  %c1 = insertelement <8 x i64> %b1, i64 %c, i64 2
  %d1 = insertelement <8 x i64> %c1, i64 %d, i64 3
  %e1 = insertelement <8 x i64> %d1, i64 %e, i64 4
  %f1 = insertelement <8 x i64> %e1, i64 %f, i64 5
  %g1 = insertelement <8 x i64> %f1, i64 %g, i64 6
  %h1 = insertelement <8 x i64> %g1, i64 %h, i64 7
  %t = trunc <8 x i64> %h1 to <8 x i32>
  %s = add <8 x i64> %h1, %h1
  %t2 = trunc <8 x i64> %s to <8 x i32>
  %o = xor <8 x i32> %t, %t2
  ret <8 x i32> %o
}