llvm/test/CodeGen/AMDGPU/unaligned-buffer.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc -global-isel=0 -mtriple=amdgcn -mcpu=gfx1100 < %s | FileCheck -check-prefix=SDAG %s
; RUN: llc -global-isel=1 -mtriple=amdgcn -mcpu=gfx1100 < %s | FileCheck -check-prefix=GISEL %s

; Check that in strict OOB mode for buffers (relaxed-buffer-oob-mode attribute not set) the underaligned loads and stores get split.
; FIXME: The loads/stores do not get split (extend amdgpu-lower-buffer-fat-pointers?).

define amdgpu_ps void @split_underaligned_load(ptr addrspace(7) inreg %p, ptr addrspace(7) inreg %p2) #0 {
; CHECK-LABEL: split_underaligned_load:
; CHECK:       ; %bb.0: ; %entry
; CHECK-NEXT:    v_mov_b32_e32 v0, s4
; CHECK-NEXT:    v_mov_b32_e32 v2, s9
; CHECK-NEXT:    s_mov_b32 s15, s8
; CHECK-NEXT:    s_mov_b32 s14, s7
; CHECK-NEXT:    s_mov_b32 s13, s6
; CHECK-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; CHECK-NEXT:    s_mov_b32 s12, s5
; CHECK-NEXT:    s_waitcnt vmcnt(0)
; CHECK-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; CHECK-NEXT:    s_endpgm
; SDAG-LABEL: split_underaligned_load:
; SDAG:       ; %bb.0: ; %entry
; SDAG-NEXT:    v_mov_b32_e32 v0, s4
; SDAG-NEXT:    v_mov_b32_e32 v2, s9
; SDAG-NEXT:    s_mov_b32 s15, s8
; SDAG-NEXT:    s_mov_b32 s14, s7
; SDAG-NEXT:    s_mov_b32 s13, s6
; SDAG-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; SDAG-NEXT:    s_mov_b32 s12, s5
; SDAG-NEXT:    s_waitcnt vmcnt(0)
; SDAG-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; SDAG-NEXT:    s_endpgm
;
; GISEL-LABEL: split_underaligned_load:
; GISEL:       ; %bb.0: ; %entry
; GISEL-NEXT:    v_mov_b32_e32 v0, s4
; GISEL-NEXT:    v_mov_b32_e32 v2, s9
; GISEL-NEXT:    s_mov_b32 s12, s5
; GISEL-NEXT:    s_mov_b32 s13, s6
; GISEL-NEXT:    s_mov_b32 s14, s7
; GISEL-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; GISEL-NEXT:    s_mov_b32 s15, s8
; GISEL-NEXT:    s_waitcnt vmcnt(0)
; GISEL-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; GISEL-NEXT:    s_endpgm
entry:
  %gep = getelementptr i8, ptr addrspace(7) %p, i32 0
  %ld = load i64, ptr addrspace(7) %gep, align 4

  %gep2 = getelementptr i8, ptr addrspace(7) %p2, i32 0
  store i64 %ld, ptr addrspace(7) %gep2, align 4
  ret void
}

; Check that in strict OOB mode for buffers (relaxed-buffer-oob-mode attribute not set) the naturally aligned loads and stores do not get split.

define amdgpu_ps void @do_not_split_aligned_load(ptr addrspace(7) inreg %p, ptr addrspace(7) inreg %p2) #0 {
; CHECK-LABEL: do_not_split_aligned_load:
; CHECK:       ; %bb.0: ; %entry
; CHECK-NEXT:    v_mov_b32_e32 v0, s4
; CHECK-NEXT:    v_mov_b32_e32 v2, s9
; CHECK-NEXT:    s_mov_b32 s15, s8
; CHECK-NEXT:    s_mov_b32 s14, s7
; CHECK-NEXT:    s_mov_b32 s13, s6
; CHECK-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; CHECK-NEXT:    s_mov_b32 s12, s5
; CHECK-NEXT:    s_waitcnt vmcnt(0)
; CHECK-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; CHECK-NEXT:    s_endpgm
; SDAG-LABEL: do_not_split_aligned_load:
; SDAG:       ; %bb.0: ; %entry
; SDAG-NEXT:    v_mov_b32_e32 v0, s4
; SDAG-NEXT:    v_mov_b32_e32 v2, s9
; SDAG-NEXT:    s_mov_b32 s15, s8
; SDAG-NEXT:    s_mov_b32 s14, s7
; SDAG-NEXT:    s_mov_b32 s13, s6
; SDAG-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; SDAG-NEXT:    s_mov_b32 s12, s5
; SDAG-NEXT:    s_waitcnt vmcnt(0)
; SDAG-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; SDAG-NEXT:    s_endpgm
;
; GISEL-LABEL: do_not_split_aligned_load:
; GISEL:       ; %bb.0: ; %entry
; GISEL-NEXT:    v_mov_b32_e32 v0, s4
; GISEL-NEXT:    v_mov_b32_e32 v2, s9
; GISEL-NEXT:    s_mov_b32 s12, s5
; GISEL-NEXT:    s_mov_b32 s13, s6
; GISEL-NEXT:    s_mov_b32 s14, s7
; GISEL-NEXT:    buffer_load_b64 v[0:1], v0, s[0:3], 0 offen
; GISEL-NEXT:    s_mov_b32 s15, s8
; GISEL-NEXT:    s_waitcnt vmcnt(0)
; GISEL-NEXT:    buffer_store_b64 v[0:1], v2, s[12:15], 0 offen
; GISEL-NEXT:    s_endpgm
entry:
  %gep = getelementptr i8, ptr addrspace(7) %p, i32 0
  %ld = load i64, ptr addrspace(7) %gep, align 8

  %gep2 = getelementptr i8, ptr addrspace(7) %p2, i32 0
  store i64 %ld, ptr addrspace(7) %gep2, align 8
  ret void
}