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llvm/llvm/test/CodeGen/AArch64/fptrunc.ll 

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
; RUN: llc -mtriple=aarch64 -global-isel=0 -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SD
; RUN: llc -mtriple=aarch64 -global-isel=1 -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-GI

define float @fptrunc_f64_f32(double %a) {
; CHECK-LABEL: fptrunc_f64_f32:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvt s0, d0
; CHECK-NEXT:    ret
entry:
  %c = fptrunc double %a to float
  ret float %c
}

define half @fptrunc_f64_f16(double %a) {
; CHECK-LABEL: fptrunc_f64_f16:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvt h0, d0
; CHECK-NEXT:    ret
entry:
  %c = fptrunc double %a to half
  ret half %c
}

define half @fptrunc_f32_f16(float %a) {
; CHECK-LABEL: fptrunc_f32_f16:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvt h0, s0
; CHECK-NEXT:    ret
entry:
  %c = fptrunc float %a to half
  ret half %c
}


define half @fptrunc_f128_f16(fp128 %a) {
; CHECK-SD-LABEL: fptrunc_f128_f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 16
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    bl __trunctfhf2
; CHECK-SD-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_f128_f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    b __trunctfhf2
entry:
  %c = fptrunc fp128 %a to half
  ret half %c
}

define float @fptrunc_f128_f32(fp128 %a) {
; CHECK-SD-LABEL: fptrunc_f128_f32:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 16
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    bl __trunctfsf2
; CHECK-SD-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_f128_f32:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    b __trunctfsf2
entry:
  %c = fptrunc fp128 %a to float
  ret float %c
}

define double @fptrunc_f128_f64(fp128 %a) {
; CHECK-SD-LABEL: fptrunc_f128_f64:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 16
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    bl __trunctfdf2
; CHECK-SD-NEXT:    ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_f128_f64:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    b __trunctfdf2
entry:
  %c = fptrunc fp128 %a to double
  ret double %c
}

define <2 x half> @fptrunc_v2f128_v2f16(<2 x fp128> %a) {
; CHECK-SD-LABEL: fptrunc_v2f128_v2f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    sub sp, sp, #48
; CHECK-SD-NEXT:    str x30, [sp, #32] // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 48
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-SD-NEXT:    mov v0.16b, v1.16b
; CHECK-SD-NEXT:    bl __trunctfhf2
; CHECK-SD-NEXT:    // kill: def $h0 killed $h0 def $q0
; CHECK-SD-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-SD-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-SD-NEXT:    bl __trunctfhf2
; CHECK-SD-NEXT:    ldr q1, [sp, #16] // 16-byte Folded Reload
; CHECK-SD-NEXT:    // kill: def $h0 killed $h0 def $q0
; CHECK-SD-NEXT:    ldr x30, [sp, #32] // 8-byte Folded Reload
; CHECK-SD-NEXT:    mov v0.h[1], v1.h[0]
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-SD-NEXT:    add sp, sp, #48
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v2f128_v2f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    sub sp, sp, #64
; CHECK-GI-NEXT:    str x30, [sp, #48] // 8-byte Folded Spill
; CHECK-GI-NEXT:    .cfi_def_cfa_offset 64
; CHECK-GI-NEXT:    .cfi_offset w30, -16
; CHECK-GI-NEXT:    mov v2.d[0], x8
; CHECK-GI-NEXT:    str q1, [sp] // 16-byte Folded Spill
; CHECK-GI-NEXT:    mov v2.d[1], x8
; CHECK-GI-NEXT:    str q2, [sp, #32] // 16-byte Folded Spill
; CHECK-GI-NEXT:    bl __trunctfhf2
; CHECK-GI-NEXT:    // kill: def $h0 killed $h0 def $q0
; CHECK-GI-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-GI-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-GI-NEXT:    bl __trunctfhf2
; CHECK-GI-NEXT:    // kill: def $h0 killed $h0 def $q0
; CHECK-GI-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-GI-NEXT:    ldr q0, [sp, #32] // 16-byte Folded Reload
; CHECK-GI-NEXT:    bl __trunctfhf2
; CHECK-GI-NEXT:    ldr q0, [sp, #32] // 16-byte Folded Reload
; CHECK-GI-NEXT:    bl __trunctfhf2
; CHECK-GI-NEXT:    ldp q1, q0, [sp] // 32-byte Folded Reload
; CHECK-GI-NEXT:    ldr x30, [sp, #48] // 8-byte Folded Reload
; CHECK-GI-NEXT:    mov v0.h[1], v1.h[0]
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-GI-NEXT:    add sp, sp, #64
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <2 x fp128> %a to <2 x half>
  ret <2 x half> %c
}


define <2 x float> @fptrunc_v2f128_v2f32(<2 x fp128> %a) {
; CHECK-SD-LABEL: fptrunc_v2f128_v2f32:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    sub sp, sp, #48
; CHECK-SD-NEXT:    str x30, [sp, #32] // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 48
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-SD-NEXT:    mov v0.16b, v1.16b
; CHECK-SD-NEXT:    bl __trunctfsf2
; CHECK-SD-NEXT:    // kill: def $s0 killed $s0 def $q0
; CHECK-SD-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-SD-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-SD-NEXT:    bl __trunctfsf2
; CHECK-SD-NEXT:    ldr q1, [sp, #16] // 16-byte Folded Reload
; CHECK-SD-NEXT:    // kill: def $s0 killed $s0 def $q0
; CHECK-SD-NEXT:    ldr x30, [sp, #32] // 8-byte Folded Reload
; CHECK-SD-NEXT:    mov v0.s[1], v1.s[0]
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-SD-NEXT:    add sp, sp, #48
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v2f128_v2f32:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    sub sp, sp, #48
; CHECK-GI-NEXT:    str x30, [sp, #32] // 8-byte Folded Spill
; CHECK-GI-NEXT:    .cfi_def_cfa_offset 48
; CHECK-GI-NEXT:    .cfi_offset w30, -16
; CHECK-GI-NEXT:    str q1, [sp] // 16-byte Folded Spill
; CHECK-GI-NEXT:    bl __trunctfsf2
; CHECK-GI-NEXT:    // kill: def $s0 killed $s0 def $q0
; CHECK-GI-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-GI-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-GI-NEXT:    bl __trunctfsf2
; CHECK-GI-NEXT:    ldr q1, [sp, #16] // 16-byte Folded Reload
; CHECK-GI-NEXT:    // kill: def $s0 killed $s0 def $q0
; CHECK-GI-NEXT:    ldr x30, [sp, #32] // 8-byte Folded Reload
; CHECK-GI-NEXT:    mov v1.s[1], v0.s[0]
; CHECK-GI-NEXT:    fmov d0, d1
; CHECK-GI-NEXT:    add sp, sp, #48
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <2 x fp128> %a to <2 x float>
  ret <2 x float> %c
}


define <2 x double> @fptrunc_v2f128_v2f64(<2 x fp128> %a) {
; CHECK-SD-LABEL: fptrunc_v2f128_v2f64:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    sub sp, sp, #48
; CHECK-SD-NEXT:    str x30, [sp, #32] // 8-byte Folded Spill
; CHECK-SD-NEXT:    .cfi_def_cfa_offset 48
; CHECK-SD-NEXT:    .cfi_offset w30, -16
; CHECK-SD-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-SD-NEXT:    mov v0.16b, v1.16b
; CHECK-SD-NEXT:    bl __trunctfdf2
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-SD-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-SD-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-SD-NEXT:    bl __trunctfdf2
; CHECK-SD-NEXT:    ldr q1, [sp, #16] // 16-byte Folded Reload
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-SD-NEXT:    ldr x30, [sp, #32] // 8-byte Folded Reload
; CHECK-SD-NEXT:    mov v0.d[1], v1.d[0]
; CHECK-SD-NEXT:    add sp, sp, #48
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v2f128_v2f64:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    sub sp, sp, #48
; CHECK-GI-NEXT:    str x30, [sp, #32] // 8-byte Folded Spill
; CHECK-GI-NEXT:    .cfi_def_cfa_offset 48
; CHECK-GI-NEXT:    .cfi_offset w30, -16
; CHECK-GI-NEXT:    str q1, [sp] // 16-byte Folded Spill
; CHECK-GI-NEXT:    bl __trunctfdf2
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-GI-NEXT:    str q0, [sp, #16] // 16-byte Folded Spill
; CHECK-GI-NEXT:    ldr q0, [sp] // 16-byte Folded Reload
; CHECK-GI-NEXT:    bl __trunctfdf2
; CHECK-GI-NEXT:    ldr q1, [sp, #16] // 16-byte Folded Reload
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-GI-NEXT:    ldr x30, [sp, #32] // 8-byte Folded Reload
; CHECK-GI-NEXT:    mov v1.d[1], v0.d[0]
; CHECK-GI-NEXT:    mov v0.16b, v1.16b
; CHECK-GI-NEXT:    add sp, sp, #48
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <2 x fp128> %a to <2 x double>
  ret <2 x double> %c
}

define <2 x float> @fptrunc_v2f64_v2f32(<2 x double> %a) {
; CHECK-LABEL: fptrunc_v2f64_v2f32:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvtn v0.2s, v0.2d
; CHECK-NEXT:    ret
entry:
  %c = fptrunc <2 x double> %a to <2 x float>
  ret <2 x float> %c
}

define <3 x float> @fptrunc_v3f64_v3f32(<3 x double> %a) {
; CHECK-SD-LABEL: fptrunc_v3f64_v3f32:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-SD-NEXT:    // kill: def $d1 killed $d1 def $q1
; CHECK-SD-NEXT:    // kill: def $d2 killed $d2 def $q2
; CHECK-SD-NEXT:    mov v0.d[1], v1.d[0]
; CHECK-SD-NEXT:    fcvtn v0.2s, v0.2d
; CHECK-SD-NEXT:    fcvtn2 v0.4s, v2.2d
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v3f64_v3f32:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-GI-NEXT:    // kill: def $d1 killed $d1 def $q1
; CHECK-GI-NEXT:    fcvt s2, d2
; CHECK-GI-NEXT:    mov v0.d[1], v1.d[0]
; CHECK-GI-NEXT:    fcvtn v1.2s, v0.2d
; CHECK-GI-NEXT:    mov v0.s[0], v1.s[0]
; CHECK-GI-NEXT:    mov v0.s[1], v1.s[1]
; CHECK-GI-NEXT:    mov v0.s[2], v2.s[0]
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <3 x double> %a to <3 x float>
  ret <3 x float> %c
}

define <4 x float> @fptrunc_v4f64_v4f32(<4 x double> %a) {
; CHECK-LABEL: fptrunc_v4f64_v4f32:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvtn v0.2s, v0.2d
; CHECK-NEXT:    fcvtn2 v0.4s, v1.2d
; CHECK-NEXT:    ret
entry:
  %c = fptrunc <4 x double> %a to <4 x float>
  ret <4 x float> %c
}

define <2 x half> @fptrunc_v2f64_v2f16(<2 x double> %a) {
; CHECK-SD-LABEL: fptrunc_v2f64_v2f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    fcvtxn v0.2s, v0.2d
; CHECK-SD-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v2f64_v2f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    mov d1, v0.d[1]
; CHECK-GI-NEXT:    fcvt h0, d0
; CHECK-GI-NEXT:    fcvt h1, d1
; CHECK-GI-NEXT:    mov v0.h[1], v1.h[0]
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <2 x double> %a to <2 x half>
  ret <2 x half> %c
}

define <3 x half> @fptrunc_v3f64_v3f16(<3 x double> %a) {
; CHECK-SD-LABEL: fptrunc_v3f64_v3f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    fcvt h1, d1
; CHECK-SD-NEXT:    fcvt h0, d0
; CHECK-SD-NEXT:    mov v0.h[1], v1.h[0]
; CHECK-SD-NEXT:    fcvt h1, d2
; CHECK-SD-NEXT:    mov v0.h[2], v1.h[0]
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v3f64_v3f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    fcvt h0, d0
; CHECK-GI-NEXT:    fcvt h1, d1
; CHECK-GI-NEXT:    fcvt h2, d2
; CHECK-GI-NEXT:    mov v0.h[1], v1.h[0]
; CHECK-GI-NEXT:    mov v0.h[2], v2.h[0]
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <3 x double> %a to <3 x half>
  ret <3 x half> %c
}

define <4 x half> @fptrunc_v4f64_v4f16(<4 x double> %a) {
; CHECK-SD-LABEL: fptrunc_v4f64_v4f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    fcvtxn v0.2s, v0.2d
; CHECK-SD-NEXT:    fcvtxn2 v0.4s, v1.2d
; CHECK-SD-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v4f64_v4f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    mov d2, v0.d[1]
; CHECK-GI-NEXT:    fcvt h0, d0
; CHECK-GI-NEXT:    mov d3, v1.d[1]
; CHECK-GI-NEXT:    fcvt h1, d1
; CHECK-GI-NEXT:    fcvt h2, d2
; CHECK-GI-NEXT:    mov v0.h[1], v2.h[0]
; CHECK-GI-NEXT:    fcvt h2, d3
; CHECK-GI-NEXT:    mov v0.h[2], v1.h[0]
; CHECK-GI-NEXT:    mov v0.h[3], v2.h[0]
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 killed $q0
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <4 x double> %a to <4 x half>
  ret <4 x half> %c
}

define <2 x half> @fptrunc_v2f32_v2f16(<2 x float> %a) {
; CHECK-SD-LABEL: fptrunc_v2f32_v2f16:
; CHECK-SD:       // %bb.0: // %entry
; CHECK-SD-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-SD-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-SD-NEXT:    ret
;
; CHECK-GI-LABEL: fptrunc_v2f32_v2f16:
; CHECK-GI:       // %bb.0: // %entry
; CHECK-GI-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-GI-NEXT:    mov v1.s[0], v0.s[0]
; CHECK-GI-NEXT:    mov v1.s[1], v0.s[1]
; CHECK-GI-NEXT:    fcvtn v0.4h, v1.4s
; CHECK-GI-NEXT:    ret
entry:
  %c = fptrunc <2 x float> %a to <2 x half>
  ret <2 x half> %c
}

define <3 x half> @fptrunc_v3f32_v3f16(<3 x float> %a) {
; CHECK-LABEL: fptrunc_v3f32_v3f16:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-NEXT:    ret
entry:
  %c = fptrunc <3 x float> %a to <3 x half>
  ret <3 x half> %c
}

define <4 x half> @fptrunc_v4f32_v4f16(<4 x float> %a) {
; CHECK-LABEL: fptrunc_v4f32_v4f16:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-NEXT:    ret
entry:
  %c = fptrunc <4 x float> %a to <4 x half>
  ret <4 x half> %c
}

define <8 x half> @fptrunc_v8f32_v8f16(<8 x float> %a) {
; CHECK-LABEL: fptrunc_v8f32_v8f16:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fcvtn v0.4h, v0.4s
; CHECK-NEXT:    fcvtn2 v0.8h, v1.4s
; CHECK-NEXT:    ret
entry:
  %c = fptrunc <8 x float> %a to <8 x half>
  ret <8 x half> %c
}