; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt %s -passes=sccp -S | FileCheck %s

declare void @use(i1)
declare void @llvm.assume(i1)

define void @nonnull(ptr %v) {
; CHECK-LABEL: define void @nonnull(
; CHECK-SAME: ptr [[V:%.*]]) {
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "nonnull"(ptr [[V]]) ]
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    ret void
;
  call void @llvm.assume(i1 true) [ "nonnull"(ptr %v) ]
  %c1 = icmp eq ptr %v, null
  call void @use(i1 %c1)
  %c2 = icmp ne ptr %v, null
  call void @use(i1 %c2)
  %c3 = icmp eq ptr null, %v
  call void @use(i1 %c3)
  %c4 = icmp ne ptr null, %v
  call void @use(i1 %c4)
  ret void
}

define void @nonnull_after_branch(i1 %cond1, i1 %cond2, ptr %v) {
; CHECK-LABEL: define void @nonnull_after_branch(
; CHECK-SAME: i1 [[COND1:%.*]], i1 [[COND2:%.*]], ptr [[V:%.*]]) {
; CHECK-NEXT:    [[C1:%.*]] = icmp eq ptr [[V]], null
; CHECK-NEXT:    call void @use(i1 [[C1]])
; CHECK-NEXT:    [[C2:%.*]] = icmp ne ptr [[V]], null
; CHECK-NEXT:    call void @use(i1 [[C2]])
; CHECK-NEXT:    [[C3:%.*]] = icmp eq ptr null, [[V]]
; CHECK-NEXT:    call void @use(i1 [[C3]])
; CHECK-NEXT:    [[C4:%.*]] = icmp ne ptr null, [[V]]
; CHECK-NEXT:    call void @use(i1 [[C4]])
; CHECK-NEXT:    br i1 [[COND1]], label %[[TRUE:.*]], label %[[FALSE1:.*]]
; CHECK:       [[TRUE]]:
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "nonnull"(ptr [[V]]) ]
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE:.*]]
; CHECK:       [[TRUE2]]:
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    ret void
; CHECK:       [[FALSE]]:
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    call void @use(i1 false)
; CHECK-NEXT:    call void @use(i1 true)
; CHECK-NEXT:    ret void
; CHECK:       [[FALSE1]]:
; CHECK-NEXT:    [[CF1:%.*]] = icmp eq ptr [[V]], null
; CHECK-NEXT:    call void @use(i1 [[CF1]])
; CHECK-NEXT:    [[CF2:%.*]] = icmp ne ptr [[V]], null
; CHECK-NEXT:    call void @use(i1 [[CF2]])
; CHECK-NEXT:    [[CF3:%.*]] = icmp eq ptr null, [[V]]
; CHECK-NEXT:    call void @use(i1 [[CF3]])
; CHECK-NEXT:    [[CF4:%.*]] = icmp ne ptr null, [[V]]
; CHECK-NEXT:    call void @use(i1 [[CF4]])
; CHECK-NEXT:    ret void
;

  %c1 = icmp eq ptr %v, null
  call void @use(i1 %c1)
  %c2 = icmp ne ptr %v, null
  call void @use(i1 %c2)
  %c3 = icmp eq ptr null, %v
  call void @use(i1 %c3)
  %c4 = icmp ne ptr null, %v
  call void @use(i1 %c4)
  br i1 %cond1, label %true1, label %false1

true1:
  call void @llvm.assume(i1 true) [ "nonnull"(ptr %v) ]
  %ct1 = icmp eq ptr %v, null
  call void @use(i1 %ct1)
  %ct2 = icmp ne ptr %v, null
  call void @use(i1 %ct2)
  %ct3 = icmp eq ptr null, %v
  call void @use(i1 %ct3)
  %ct4 = icmp ne ptr null, %v
  call void @use(i1 %ct4)
  br i1 %cond2, label %true2, label %false2

true2:
  %ctt1 = icmp eq ptr %v, null
  call void @use(i1 %ctt1)
  %ctt2 = icmp ne ptr %v, null
  call void @use(i1 %ctt2)
  %ctt3 = icmp eq ptr null, %v
  call void @use(i1 %ctt3)
  %ctt4 = icmp ne ptr null, %v
  call void @use(i1 %ctt4)
  ret void

false2:
  %ctf1 = icmp eq ptr %v, null
  call void @use(i1 %ctf1)
  %ctf2 = icmp ne ptr %v, null
  call void @use(i1 %ctf2)
  %ctf3 = icmp eq ptr null, %v
  call void @use(i1 %ctf3)
  %ctf4 = icmp ne ptr null, %v
  call void @use(i1 %ctf4)
  ret void


false1:
  %cf1 = icmp eq ptr %v, null
  call void @use(i1 %cf1)
  %cf2 = icmp ne ptr %v, null
  call void @use(i1 %cf2)
  %cf3 = icmp eq ptr null, %v
  call void @use(i1 %cf3)
  %cf4 = icmp ne ptr null, %v
  call void @use(i1 %cf4)
  ret void
}

define void @check_for_constant() {
; CHECK-LABEL: define void @check_for_constant() {
; CHECK-NEXT:    call void @llvm.assume(i1 true) [ "nonnull"(ptr null) ]
; CHECK-NEXT:    ret void
;
  call void @llvm.assume(i1 true) [ "nonnull"(ptr null) ]
  ret void
}