llvm/test/Transforms/LoopIdiom/unordered-atomic-memcpy-noarch.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=loop-idiom < %s -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"

;; memcpy.atomic formation (atomic load & store) -- element size 2
;;  Will not create call due to a max element size of 0
define void @test1(i64 %Size) nounwind ssp {
; CHECK-LABEL: @test1(
; CHECK-NEXT:  bb.nph:
; CHECK-NEXT:    [[BASE:%.*]] = alloca i16, i32 10000, align 2
; CHECK-NEXT:    [[DEST:%.*]] = alloca i16, i32 10000, align 2
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[INDVAR:%.*]] = phi i64 [ 0, [[BB_NPH:%.*]] ], [ [[INDVAR_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[I_0_014:%.*]] = getelementptr i16, ptr [[BASE]], i64 [[INDVAR]]
; CHECK-NEXT:    [[DESTI:%.*]] = getelementptr i16, ptr [[DEST]], i64 [[INDVAR]]
; CHECK-NEXT:    [[V:%.*]] = load atomic i16, ptr [[I_0_014]] unordered, align 2
; CHECK-NEXT:    store atomic i16 [[V]], ptr [[DESTI]] unordered, align 2
; CHECK-NEXT:    [[INDVAR_NEXT]] = add i64 [[INDVAR]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[INDVAR_NEXT]], [[SIZE:%.*]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
bb.nph:
  %Base = alloca i16, i32 10000
  %Dest = alloca i16, i32 10000
  br label %for.body

for.body:                                         ; preds = %bb.nph, %for.body
  %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
  %I.0.014 = getelementptr i16, ptr %Base, i64 %indvar
  %DestI = getelementptr i16, ptr %Dest, i64 %indvar
  %V = load atomic i16, ptr %I.0.014 unordered, align 2
  store atomic i16 %V, ptr %DestI unordered, align 2
  %indvar.next = add i64 %indvar, 1
  %exitcond = icmp eq i64 %indvar.next, %Size
  br i1 %exitcond, label %for.end, label %for.body

for.end:                                          ; preds = %for.body, %entry
  ret void
}