File: arm64-csldst-mmo.ll

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llvm-toolchain-20 1%3A20.1.6-1~exp1
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; REQUIRES: asserts
; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=cortex-a57 -enable-misched=0 -debug-only=machine-scheduler -o - 2>&1 > /dev/null | FileCheck %s
; REQUIRES: asserts

@G = external dso_local global [0 x i32], align 4

; Check that MMOs are added to epilogue calle-save restore loads so
; that the store to G is not considered dependant on the callee-save
; loads.
;
; CHECK: Before post-MI-sched:
; CHECK-LABEL: # Machine code for function test1:
; CHECK: SU(2):   STRWui $wzr
; CHECK: SU(3):   $x21, $x20 = frame-destroy LDPXi $sp, 2
; CHECK:  Predecessors:
; CHECK-NEXT:   SU(0): Out
; CHECK-NEXT:   SU(0): Out
; CHECK-NEXT:   SU(0): Ord
; CHECK-NEXT:  Successors:
define void @test1() {
entry:
  tail call void asm sideeffect "nop", "~{x20},~{x21},~{x22},~{x23}"() nounwind
  store i32 0, ptr @G, align 4
  ret void
}