File: bitcast-promote-widen.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (27 lines) | stat: -rw-r--r-- 899 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu | FileCheck %s

; Test cases of bitcasts where one type needs to be widened and one needs to be promoted.

define <2 x i16> @bitcast_v2i16_v2f16(<2 x half> %x) {
; CHECK-LABEL: bitcast_v2i16_v2f16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    // kill: def $d0 killed $d0 def $q0
; CHECK-NEXT:    umov w8, v0.h[0]
; CHECK-NEXT:    fmov s1, w8
; CHECK-NEXT:    umov w8, v0.h[1]
; CHECK-NEXT:    mov v1.s[1], w8
; CHECK-NEXT:    mov v0.16b, v1.16b
; CHECK-NEXT:    ret
  %y = bitcast <2 x half> %x to <2 x i16>
  ret <2 x i16> %y
}

define <2 x half> @bitcast_v2f16_v2i16(<2 x i16> %x) {
; CHECK-LABEL: bitcast_v2f16_v2i16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    uzp1 v0.4h, v0.4h, v0.4h
; CHECK-NEXT:    ret
  %y = bitcast <2 x i16> %x to <2 x half>
  ret <2 x half> %y
}