test/Transforms/LICM/callbr-crash.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=licm < %s | FileCheck %s

define i32 @j() {
; CHECK-LABEL: @j(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[FOR_COND:%.*]]
; CHECK:       for.cond:
; CHECK-NEXT:    callbr void asm sideeffect "", "!i,~{dirflag},~{fpsr},~{flags}"()
; CHECK-NEXT:    to label [[COND_TRUE_I:%.*]] [label %for.end.split.loop.exit1]
; CHECK:       cond.true.i:
; CHECK-NEXT:    br i1 true, label [[FOR_END_SPLIT_LOOP_EXIT:%.*]], label [[FOR_COND]]
; CHECK:       for.end.split.loop.exit:
; CHECK-NEXT:    [[ASMRESULT1_I_I_LE:%.*]] = extractvalue { i8, i32 } zeroinitializer, 1
; CHECK-NEXT:    br label [[FOR_END:%.*]]
; CHECK:       for.end.split.loop.exit1:
; CHECK-NEXT:    [[PHI_PH2:%.*]] = phi i32 [ undef, [[FOR_COND]] ]
; CHECK-NEXT:    br label [[FOR_END]]
; CHECK:       for.end:
; CHECK-NEXT:    [[PHI:%.*]] = phi i32 [ [[ASMRESULT1_I_I_LE]], [[FOR_END_SPLIT_LOOP_EXIT]] ], [ [[PHI_PH2]], [[FOR_END_SPLIT_LOOP_EXIT1:%.*]] ]
; CHECK-NEXT:    ret i32 [[PHI]]
;
entry:
  br label %for.cond

for.cond:                                         ; preds = %cond.true.i, %entry
  callbr void asm sideeffect "", "!i,~{dirflag},~{fpsr},~{flags}"()
  to label %cond.true.i [label %for.end]

cond.true.i:                                      ; preds = %for.cond
  %asmresult1.i.i = extractvalue { i8, i32 } zeroinitializer, 1
  br i1 undef, label %for.end, label %for.cond

for.end:                                          ; preds = %cond.true.i, %for.cond
  %phi = phi i32 [ %asmresult1.i.i, %cond.true.i ], [ undef, %for.cond ]
  ret i32 %phi
}

declare void @use_i32(i32)

define void @pr64215() {
; CHECK-LABEL: @pr64215(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = callbr i32 asm sideeffect "", "=r"()
; CHECK-NEXT:    to label [[LOOP_PREHEADER:%.*]] []
; CHECK:       loop.preheader:
; CHECK-NEXT:    [[ADD:%.*]] = add i32 [[X]], 1
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    call void @use_i32(i32 [[ADD]])
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  %x = callbr i32 asm sideeffect "", "=r"()
  to label %loop []

loop:
  %add = add i32 %x, 1
  call void @use_i32(i32 %add)
  br label %loop
}