llvm/test/Transforms/UnifyLoopExits/undef-phis.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes='unify-loop-exits' -S | FileCheck %s

define fastcc void @undef_phi(i64 %i5247, i1 %i4530, i1 %i4936.not) {
; CHECK-LABEL: define fastcc void @undef_phi(
; CHECK-SAME: i64 [[I5247:%.*]], i1 [[I4530:%.*]], i1 [[I4936_NOT:%.*]]) {
; CHECK-NEXT:  [[BB:.*:]]
; CHECK-NEXT:    br label %[[MBB3932:.*]]
; CHECK:       [[MBB3932]]:
; CHECK-NEXT:    br label %[[MBB4454:.*]]
; CHECK:       [[MBB4321:.*]]:
; CHECK-NEXT:    [[TMP0:%.*]] = trunc i64 [[I5247]] to i32
; CHECK-NEXT:    [[I5290:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT:    br i1 [[I5290]], label %[[MBB3932]], label %[[LOOP_EXIT_GUARD:.*]]
; CHECK:       [[MBB4454]]:
; CHECK-NEXT:    br i1 [[I4530]], label %[[MBB4535:.*]], label %[[LOOP_EXIT_GUARD1:.*]]
; CHECK:       [[MBB4531:.*]]:
; CHECK-NEXT:    ret void
; CHECK:       [[MBB4535]]:
; CHECK-NEXT:    br i1 [[I4936_NOT]], label %[[LOOP_EXIT_GUARD1]], label %[[MBB4454]]
; CHECK:       [[MBB5291:.*]]:
; CHECK-NEXT:    [[I5293:%.*]] = insertvalue [2 x i32] zeroinitializer, i32 [[DOTMOVED:%.*]], 1
; CHECK-NEXT:    store volatile [2 x i32] [[I5293]], ptr addrspace(5) null, align 4
; CHECK-NEXT:    ret void
; CHECK:       [[LOOP_EXIT_GUARD]]:
; CHECK-NEXT:    [[DOTMOVED]] = phi i32 [ [[TMP0]], %[[MBB4321]] ], [ poison, %[[LOOP_EXIT_GUARD1]] ]
; CHECK-NEXT:    [[GUARD_MBB4531:%.*]] = phi i1 [ false, %[[MBB4321]] ], [ [[GUARD_MBB4531_MOVED:%.*]], %[[LOOP_EXIT_GUARD1]] ]
; CHECK-NEXT:    br i1 [[GUARD_MBB4531]], label %[[MBB4531]], label %[[MBB5291]]
; CHECK:       [[LOOP_EXIT_GUARD1]]:
; CHECK-NEXT:    [[GUARD_MBB4531_MOVED]] = phi i1 [ true, %[[MBB4454]] ], [ poison, %[[MBB4535]] ]
; CHECK-NEXT:    [[GUARD_LOOP_EXIT_GUARD:%.*]] = phi i1 [ true, %[[MBB4454]] ], [ false, %[[MBB4535]] ]
; CHECK-NEXT:    br i1 [[GUARD_LOOP_EXIT_GUARD]], label %[[LOOP_EXIT_GUARD]], label %[[MBB4321]]
;
mbb:
  br label %mbb3932

mbb3932:                                           ; preds = %mbb4321, %mbb
  br label %mbb4454

mbb4321:                                           ; preds = %mbb4535
  %0 = trunc i64 %i5247 to i32
  %i5290 = icmp eq i32 %0, 0
  br i1 %i5290, label %mbb3932, label %mbb5291

mbb4454:                                           ; preds = %mbb4535, %mbb3932
  br i1 %i4530, label %mbb4535, label %mbb4531

mbb4531:                                           ; preds = %mbb4454
  ret void

mbb4535:                                           ; preds = %mbb4454
  br i1 %i4936.not, label %mbb4321, label %mbb4454

mbb5291:                                           ; preds = %mbb4321
  %i5293 = insertvalue [2 x i32] zeroinitializer, i32 %0, 1
  store volatile [2 x i32] %i5293, ptr addrspace(5) null, align 4
  ret void
}

define fastcc void @undef_phi_callbr(i64 %i5247, i1 %i4530, i1 %i4936.not) {
; CHECK-LABEL: define fastcc void @undef_phi_callbr(
; CHECK-SAME: i64 [[I5247:%.*]], i1 [[I4530:%.*]], i1 [[I4936_NOT:%.*]]) {
; CHECK-NEXT:  [[MBB:.*:]]
; CHECK-NEXT:    callbr void asm "", ""()
; CHECK-NEXT:            to label %[[MBB3932:.*]] []
; CHECK:       [[MBB3932]]:
; CHECK-NEXT:    callbr void asm "", ""()
; CHECK-NEXT:            to label %[[MBB4454:.*]] []
; CHECK:       [[MBB4321:.*]]:
; CHECK-NEXT:    [[TMP0:%.*]] = trunc i64 [[I5247]] to i32
; CHECK-NEXT:    [[I5290:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT:    callbr void asm "", "r,!i"(i1 [[I5290]])
; CHECK-NEXT:            to label %[[MBB3932]] [label %[[MBB4321_TARGET_MBB5291:.*]]]
; CHECK:       [[MBB4454]]:
; CHECK-NEXT:    callbr void asm "", "r,!i"(i1 [[I4530]])
; CHECK-NEXT:            to label %[[MBB4535:.*]] [label %[[MBB4454_TARGET_MBB4454_TARGET_MBB4531:.*]]]
; CHECK:       [[MBB4531:.*]]:
; CHECK-NEXT:    ret void
; CHECK:       [[MBB4535]]:
; CHECK-NEXT:    callbr void asm "", "r,!i"(i1 [[I4936_NOT]])
; CHECK-NEXT:            to label %[[MBB4535_TARGET_MBB4321:.*]] [label %[[MBB4454]]]
; CHECK:       [[MBB5291:.*]]:
; CHECK-NEXT:    [[I5293:%.*]] = insertvalue [2 x i32] zeroinitializer, i32 [[DOTMOVED:%.*]], 1
; CHECK-NEXT:    store volatile [2 x i32] [[I5293]], ptr addrspace(5) null, align 4
; CHECK-NEXT:    ret void
; CHECK:       [[MBB4454_TARGET_MBB4531:.*]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD:.*]]
; CHECK:       [[MBB4321_TARGET_MBB5291]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD]]
; CHECK:       [[LOOP_EXIT_GUARD]]:
; CHECK-NEXT:    [[DOTMOVED]] = phi i32 [ poison, %[[MBB4454_TARGET_MBB4531]] ], [ [[TMP0]], %[[MBB4321_TARGET_MBB5291]] ]
; CHECK-NEXT:    [[GUARD_MBB4531:%.*]] = phi i1 [ true, %[[MBB4454_TARGET_MBB4531]] ], [ false, %[[MBB4321_TARGET_MBB5291]] ]
; CHECK-NEXT:    br i1 [[GUARD_MBB4531]], label %[[MBB4531]], label %[[MBB5291]]
; CHECK:       [[MBB4454_TARGET_MBB4454_TARGET_MBB4531]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD1:.*]]
; CHECK:       [[MBB4535_TARGET_MBB4321]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD1]]
; CHECK:       [[LOOP_EXIT_GUARD1]]:
; CHECK-NEXT:    [[GUARD_MBB4454_TARGET_MBB4531:%.*]] = phi i1 [ true, %[[MBB4454_TARGET_MBB4454_TARGET_MBB4531]] ], [ false, %[[MBB4535_TARGET_MBB4321]] ]
; CHECK-NEXT:    br i1 [[GUARD_MBB4454_TARGET_MBB4531]], label %[[MBB4454_TARGET_MBB4531]], label %[[MBB4321]]
;
mbb:
  callbr void asm "", ""() to label %mbb3932 []

mbb3932:                                           ; preds = %mbb4321, %mbb
  callbr void asm "", ""() to label %mbb4454 []

mbb4321:                                           ; preds = %mbb4535
  %0 = trunc i64 %i5247 to i32
  %i5290 = icmp eq i32 %0, 0
  callbr void asm "", "r,!i"(i1 %i5290) to label %mbb3932 [label %mbb5291]

mbb4454:                                           ; preds = %mbb4535, %mbb3932
  callbr void asm "", "r,!i"(i1 %i4530) to label %mbb4535 [label %mbb4531]

mbb4531:                                           ; preds = %mbb4454
  ret void

mbb4535:                                           ; preds = %mbb4454
  callbr void asm "", "r,!i"(i1 %i4936.not) to label %mbb4321 [label %mbb4454]

mbb5291:                                           ; preds = %mbb4321
  %i5293 = insertvalue [2 x i32] zeroinitializer, i32 %0, 1
  store volatile [2 x i32] %i5293, ptr addrspace(5) null, align 4
  ret void
}

define fastcc void @undef_phi_switch(i64 %i5247, i1 %i4530, i1 %i4936.not, i1 %Pred) {
; CHECK-LABEL: define fastcc void @undef_phi_switch(
; CHECK-SAME: i64 [[I5247:%.*]], i1 [[I4530:%.*]], i1 [[I4936_NOT:%.*]], i1 [[PRED:%.*]]) {
; CHECK-NEXT:  [[MBB:.*:]]
; CHECK-NEXT:    switch i1 [[PRED]], label %[[MBB3932:.*]] [
; CHECK-NEXT:    ]
; CHECK:       [[MBB3932]]:
; CHECK-NEXT:    switch i1 [[PRED]], label %[[MBB4454:.*]] [
; CHECK-NEXT:    ]
; CHECK:       [[MBB4321:.*]]:
; CHECK-NEXT:    [[TMP0:%.*]] = trunc i64 [[I5247]] to i32
; CHECK-NEXT:    [[I5290:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT:    switch i1 [[I5290]], label %[[MBB3932]] [
; CHECK-NEXT:      i1 false, label %[[MBB4321_TARGET_MBB5291:.*]]
; CHECK-NEXT:    ]
; CHECK:       [[MBB4454]]:
; CHECK-NEXT:    switch i1 [[I4530]], label %[[MBB4535:.*]] [
; CHECK-NEXT:      i1 false, label %[[MBB4454_TARGET_MBB4454_TARGET_MBB4531:.*]]
; CHECK-NEXT:    ]
; CHECK:       [[MBB4531:.*]]:
; CHECK-NEXT:    ret void
; CHECK:       [[MBB4535]]:
; CHECK-NEXT:    switch i1 [[I4936_NOT]], label %[[MBB4535_TARGET_MBB4321:.*]] [
; CHECK-NEXT:      i1 false, label %[[MBB4454]]
; CHECK-NEXT:    ]
; CHECK:       [[MBB5291:.*]]:
; CHECK-NEXT:    [[I5293:%.*]] = insertvalue [2 x i32] zeroinitializer, i32 [[DOTMOVED:%.*]], 1
; CHECK-NEXT:    store volatile [2 x i32] [[I5293]], ptr addrspace(5) null, align 4
; CHECK-NEXT:    ret void
; CHECK:       [[MBB4454_TARGET_MBB4531:.*]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD:.*]]
; CHECK:       [[MBB4321_TARGET_MBB5291]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD]]
; CHECK:       [[LOOP_EXIT_GUARD]]:
; CHECK-NEXT:    [[DOTMOVED]] = phi i32 [ poison, %[[MBB4454_TARGET_MBB4531]] ], [ [[TMP0]], %[[MBB4321_TARGET_MBB5291]] ]
; CHECK-NEXT:    [[GUARD_MBB4531:%.*]] = phi i1 [ true, %[[MBB4454_TARGET_MBB4531]] ], [ false, %[[MBB4321_TARGET_MBB5291]] ]
; CHECK-NEXT:    br i1 [[GUARD_MBB4531]], label %[[MBB4531]], label %[[MBB5291]]
; CHECK:       [[MBB4454_TARGET_MBB4454_TARGET_MBB4531]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD1:.*]]
; CHECK:       [[MBB4535_TARGET_MBB4321]]:
; CHECK-NEXT:    br label %[[LOOP_EXIT_GUARD1]]
; CHECK:       [[LOOP_EXIT_GUARD1]]:
; CHECK-NEXT:    [[GUARD_MBB4454_TARGET_MBB4531:%.*]] = phi i1 [ true, %[[MBB4454_TARGET_MBB4454_TARGET_MBB4531]] ], [ false, %[[MBB4535_TARGET_MBB4321]] ]
; CHECK-NEXT:    br i1 [[GUARD_MBB4454_TARGET_MBB4531]], label %[[MBB4454_TARGET_MBB4531]], label %[[MBB4321]]
;
mbb:
  switch i1 %Pred, label %mbb3932 []

mbb3932:                                           ; preds = %mbb4321, %mbb
  switch i1 %Pred, label %mbb4454 []

mbb4321:                                           ; preds = %mbb4535
  %0 = trunc i64 %i5247 to i32
  %i5290 = icmp eq i32 %0, 0
  switch i1 %i5290, label %mbb3932 [ i1 0, label %mbb5291 ]

mbb4454:                                           ; preds = %mbb4535, %mbb3932
  switch i1 %i4530, label %mbb4535 [ i1 0, label %mbb4531 ]

mbb4531:                                           ; preds = %mbb4454
  ret void

mbb4535:                                           ; preds = %mbb4454
  switch i1 %i4936.not, label %mbb4321 [ i1 0, label %mbb4454 ]

mbb5291:                                           ; preds = %mbb4321
  %i5293 = insertvalue [2 x i32] zeroinitializer, i32 %0, 1
  store volatile [2 x i32] %i5293, ptr addrspace(5) null, align 4
  ret void
}