llvm/test/Transforms/DeadStoreElimination/MSSA/multiblock-throwing.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; XFAIL: *
; RUN: opt < %s -basic-aa -dse -enable-dse-memoryssa -S | FileCheck %s

target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
declare void @unknown_func()

define void @test6(i32* noalias %P) {
; CHECK-LABEL: @test6(
; CHECK-NEXT:    store i32 0, i32* [[P:%.*]]
; CHECK-NEXT:    br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    br label [[BB3:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    call void @unknown_func()
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    store i32 0, i32* [[P]]
; CHECK-NEXT:    ret void
;
  store i32 0, i32* %P
  br i1 true, label %bb1, label %bb2
bb1:
  br label %bb3
bb2:
  call void @unknown_func()
  br label %bb3
bb3:
  store i32 0, i32* %P
  ret void
}

define i32 @test22(i32* %P, i32* noalias %Q, i32* %R) {
; CHECK-LABEL: @test22(
; CHECK-NEXT:    store i32 2, i32* [[P:%.*]]
; CHECK-NEXT:    store i32 3, i32* [[Q:%.*]]
; CHECK-NEXT:    [[L:%.*]] = load i32, i32* [[R:%.*]]
; CHECK-NEXT:    ret i32 [[L]]
;
  store i32 1, i32* %Q
  store i32 2, i32* %P
  store i32 3, i32* %Q
  %l = load i32, i32* %R
  ret i32 %l
}


define void @test23(i32* noalias %P) {
; CHECK-LABEL: @test23(
; CHECK-NEXT:    br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    br label [[BB3:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    call void @unknown_func()
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    store i32 0, i32* [[P:%.*]]
; CHECK-NEXT:    ret void
;
  br i1 true, label %bb1, label %bb2
bb1:
  store i32 0, i32* %P
  br label %bb3
bb2:
  call void @unknown_func()
  br label %bb3
bb3:
  store i32 0, i32* %P
  ret void
}


define void @test24(i32* noalias %P) {
; CHECK-LABEL: @test24(
; CHECK-NEXT:    br i1 true, label [[BB2:%.*]], label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    br label [[BB3:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    call void @unknown_func()
; CHECK-NEXT:    br label [[BB3]]
; CHECK:       bb3:
; CHECK-NEXT:    store i32 0, i32* [[P:%.*]]
; CHECK-NEXT:    ret void
;
  br i1 true, label %bb2, label %bb1
bb1:
  store i32 0, i32* %P
  br label %bb3
bb2:
  call void @unknown_func()
  br label %bb3
bb3:
  store i32 0, i32* %P
  ret void
}