integer(8) A,B
integer cnt
read*,A,B

cnt=0
do while(A<=B)
  A=A*2
  cnt=cnt+1
end do

print"(i0)",cnt
end
; ModuleID = 'FIRModule'
source_filename = "FIRModule"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

@_QQcl.ff8aea0c7d9702b3bcc2c41557fff291 = linkonce constant [73 x i8] c"/home/ubuntu/Downloads/TheStack_IR/Collated/Fortran/Source_6544/source.f\00"
@_QQcl.28693029 = linkonce constant [4 x i8] c"(i0)"
@_QQEnvironmentDefaults = local_unnamed_addr constant ptr null

define void @_QQmain() local_unnamed_addr {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = tail call ptr @_FortranAioBeginExternalListInput(i32 -1, ptr nonnull @_QQcl.ff8aea0c7d9702b3bcc2c41557fff291, i32 3)
  %4 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %1, i32 8)
  %5 = call i1 @_FortranAioInputInteger(ptr %3, ptr nonnull %2, i32 8)
  %6 = call i32 @_FortranAioEndIoStatement(ptr %3)
  %7 = load i64, ptr %2, align 8, !tbaa !3
  %.promoted = load i64, ptr %1, align 8, !tbaa !3
  %.not3 = icmp sgt i64 %.promoted, %7
  br i1 %.not3, label %11, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.04 = phi i32 [ %10, %.lr.ph ], [ 0, %0 ]
  %8 = phi i64 [ %9, %.lr.ph ], [ %.promoted, %0 ]
  %9 = shl i64 %8, 1
  %10 = add i32 %.04, 1
  %.not = icmp sgt i64 %9, %7
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  store i64 %9, ptr %1, align 8, !tbaa !3
  br label %11

11:                                               ; preds = %._crit_edge, %0
  %.0.lcssa = phi i32 [ %10, %._crit_edge ], [ 0, %0 ]
  %12 = call ptr @_FortranAioBeginExternalFormattedOutput(ptr nonnull @_QQcl.28693029, i64 4, ptr null, i32 -1, ptr nonnull @_QQcl.ff8aea0c7d9702b3bcc2c41557fff291, i32 11)
  %13 = call i1 @_FortranAioOutputInteger32(ptr %12, i32 %.0.lcssa)
  %14 = call i32 @_FortranAioEndIoStatement(ptr %12)
  ret void
}

declare ptr @_FortranAioBeginExternalListInput(i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioInputInteger(ptr, ptr, i32) local_unnamed_addr

declare i32 @_FortranAioEndIoStatement(ptr) local_unnamed_addr

declare ptr @_FortranAioBeginExternalFormattedOutput(ptr, i64, ptr, i32, ptr, i32) local_unnamed_addr

declare i1 @_FortranAioOutputInteger32(ptr, i32) local_unnamed_addr

!llvm.module.flags = !{!0, !1, !2}

!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{!4, !4, i64 0}
!4 = !{!"any data access", !5, i64 0}
!5 = !{!"any access", !6, i64 0}
!6 = !{!"Flang Type TBAA Root"}
