File: shufflevector.ll

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llvm-toolchain-21 1%3A21.1.6-3
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -global-isel -march=amdgcn -mtriple=amdgcn-amd-hmcsa -mcpu=gfx942 -verify-machineinstrs < %s | FileCheck -check-prefix=GFX942 %s

define void @shuffle_to_extract(ptr addrspace(3) %in, ptr addrspace(3) %out) {
; GFX942-LABEL: shuffle_to_extract:
; GFX942:       ; %bb.0:
; GFX942-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX942-NEXT:    ds_read2_b64 v[2:5], v0 offset1:1
; GFX942-NEXT:    s_waitcnt lgkmcnt(0)
; GFX942-NEXT:    ds_write_b64 v1, v[4:5]
; GFX942-NEXT:    s_waitcnt lgkmcnt(0)
; GFX942-NEXT:    s_setpc_b64 s[30:31]
  %val = load <8 x half>, ptr addrspace(3) %in, align 8
  %res = shufflevector <8 x half> %val, <8 x half> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
  store <4 x half> %res, ptr addrspace(3) %out, align 8
  ret void
}