llvm/test/CodeGen/AArch64/arm64-misaligned-memcpy-inline.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=arm64-apple-ios -mattr=+strict-align < %s | FileCheck %s

; Small (16 bytes here) unaligned memcpy() should be a function call if
; strict-alignment is turned on.
define void @t0(ptr %out, ptr %in) {
; CHECK-LABEL: t0:
; CHECK:       ; %bb.0: ; %entry
; CHECK-NEXT:    stp x29, x30, [sp, #-16]! ; 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w30, -8
; CHECK-NEXT:    .cfi_offset w29, -16
; CHECK-NEXT:    mov w2, #16 ; =0x10
; CHECK-NEXT:    bl _memcpy
; CHECK-NEXT:    ldp x29, x30, [sp], #16 ; 16-byte Folded Reload
; CHECK-NEXT:    ret
entry:
  call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 16, i1 false)
  ret void
}

; Small (16 bytes here) aligned memcpy() should be inlined even if
; strict-alignment is turned on.
define void @t1(ptr align 8 %out, ptr align 8 %in) {
; CHECK-LABEL: t1:
; CHECK:       ; %bb.0: ; %entry
; CHECK-NEXT:    ldp x9, x8, [x1]
; CHECK-NEXT:    stp x9, x8, [x0]
; CHECK-NEXT:    ret
entry:
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %out, ptr align 8 %in, i64 16, i1 false)
  ret void
}

; Tiny (4 bytes here) unaligned memcpy() should be inlined with byte sized
; loads and stores if strict-alignment is turned on.
define void @t2(ptr %out, ptr %in) {
; CHECK-LABEL: t2:
; CHECK:       ; %bb.0: ; %entry
; CHECK-NEXT:    ldrb w8, [x1, #3]
; CHECK-NEXT:    ldrb w9, [x1, #2]
; CHECK-NEXT:    ldrb w10, [x1]
; CHECK-NEXT:    ldrb w11, [x1, #1]
; CHECK-NEXT:    strb w8, [x0, #3]
; CHECK-NEXT:    strb w9, [x0, #2]
; CHECK-NEXT:    strb w11, [x0, #1]
; CHECK-NEXT:    strb w10, [x0]
; CHECK-NEXT:    ret
entry:
  call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 4, i1 false)
  ret void
}

declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1)