; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -O3 -S | FileCheck %s

define i32 @thread_uncond_bb_cmp(i1 %c, i32 %v) {
; CHECK-LABEL: define i32 @thread_uncond_bb_cmp(
; CHECK-SAME: i1 [[C:%.*]], i32 [[V:%.*]]) local_unnamed_addr {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C]], label [[DO_END:%.*]], label [[IF_THEN:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    tail call void @dummy()
; CHECK-NEXT:    br label [[DO_END]]
; CHECK:       return:
; CHECK-NEXT:    [[RETVAL:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[V]], [[IF_THEN]] ]
; CHECK-NEXT:    ret i32 [[RETVAL]]
;
entry:
  br i1 %c, label %do.end, label %if.then

if.then:                                          ; preds = %entry
  call void @dummy()
  %tobool = icmp eq i32 %v, 0
  br i1 %tobool, label %do.end, label %return

do.end:                                           ; preds = %entry, %if.then
  br label %return

return:                                           ; preds = %if.then, %do.end
  %retval = phi i32 [ 0, %do.end ], [ %v, %if.then ]
  ret i32 %retval
}

define i32 @thread_uncond_bb_cmp_zext(i1 %c, i32 %v) {
; CHECK-LABEL: define i32 @thread_uncond_bb_cmp_zext(
; CHECK-SAME: i1 [[C:%.*]], i32 [[V:%.*]]) local_unnamed_addr {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C]], label [[DO_END:%.*]], label [[IF_THEN:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    tail call void @dummy()
; CHECK-NEXT:    [[TOBOOL:%.*]] = icmp ne i32 [[V]], 0
; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = zext i1 [[TOBOOL]] to i32
; CHECK-NEXT:    br label [[DO_END]]
; CHECK:       return:
; CHECK-NEXT:    [[RETVAL:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[SPEC_SELECT]], [[IF_THEN]] ]
; CHECK-NEXT:    ret i32 [[RETVAL]]
;
entry:
  br i1 %c, label %do.end, label %if.then

if.then:                                          ; preds = %entry
  call void @dummy()
  %tobool = icmp eq i32 %v, 0
  br i1 %tobool, label %do.end, label %return

do.end:                                           ; preds = %entry, %if.then
  br label %return

return:                                           ; preds = %if.then, %do.end
  %retval = phi i32 [ 0, %do.end ], [ 1, %if.then ]
  ret i32 %retval
}

declare void @dummy()