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      1 ; RUN: opt %s -inline -S | FileCheck %s
      2 
      3 declare void @external_func()
      4 declare void @abort()
      5 
      6 @exception_inner = external global i8
      7 @exception_outer = external global i8
      8 @condition = external global i1
      9 
     10 
     11 ; Check for a bug in which multiple "resume" instructions in the
     12 ; inlined function caused "catch i8* @exception_outer" to appear
     13 ; multiple times in the resulting landingpad.
     14 
     15 define internal void @inner_multiple_resume() {
     16   invoke void @external_func()
     17       to label %cont unwind label %lpad
     18 cont:
     19   ret void
     20 lpad:
     21   %lp = landingpad i32 personality i8* null
     22       catch i8* @exception_inner
     23   %cond = load i1* @condition
     24   br i1 %cond, label %resume1, label %resume2
     25 resume1:
     26   resume i32 1
     27 resume2:
     28   resume i32 2
     29 }
     30 
     31 define void @outer_multiple_resume() {
     32   invoke void @inner_multiple_resume()
     33       to label %cont unwind label %lpad
     34 cont:
     35   ret void
     36 lpad:
     37   %lp = landingpad i32 personality i8* null
     38       catch i8* @exception_outer
     39   resume i32 %lp
     40 }
     41 ; CHECK: define void @outer_multiple_resume()
     42 ; CHECK: %lp.i = landingpad
     43 ; CHECK-NEXT: catch i8* @exception_inner
     44 ; CHECK-NEXT: catch i8* @exception_outer
     45 ; Check that there isn't another "catch" clause:
     46 ; CHECK-NEXT: load
     47 
     48 
     49 ; Check for a bug in which having a "resume" and a "call" in the
     50 ; inlined function caused "catch i8* @exception_outer" to appear
     51 ; multiple times in the resulting landingpad.
     52 
     53 define internal void @inner_resume_and_call() {
     54   call void @external_func()
     55   invoke void @external_func()
     56       to label %cont unwind label %lpad
     57 cont:
     58   ret void
     59 lpad:
     60   %lp = landingpad i32 personality i8* null
     61       catch i8* @exception_inner
     62   resume i32 %lp
     63 }
     64 
     65 define void @outer_resume_and_call() {
     66   invoke void @inner_resume_and_call()
     67       to label %cont unwind label %lpad
     68 cont:
     69   ret void
     70 lpad:
     71   %lp = landingpad i32 personality i8* null
     72       catch i8* @exception_outer
     73   resume i32 %lp
     74 }
     75 ; CHECK: define void @outer_resume_and_call()
     76 ; CHECK: %lp.i = landingpad
     77 ; CHECK-NEXT: catch i8* @exception_inner
     78 ; CHECK-NEXT: catch i8* @exception_outer
     79 ; Check that there isn't another "catch" clause:
     80 ; CHECK-NEXT: br
     81 
     82 
     83 ; Check what happens if the inlined function contains an "invoke" but
     84 ; no "resume".  In this case, the inlined landingpad does not need to
     85 ; include the "catch i8* @exception_outer" clause from the outer
     86 ; function (since the outer function's landingpad will not be
     87 ; reachable), but it's OK to include this clause.
     88 
     89 define internal void @inner_no_resume_or_call() {
     90   invoke void @external_func()
     91       to label %cont unwind label %lpad
     92 cont:
     93   ret void
     94 lpad:
     95   %lp = landingpad i32 personality i8* null
     96       catch i8* @exception_inner
     97   ; A landingpad might have no "resume" if a C++ destructor aborts.
     98   call void @abort() noreturn nounwind
     99   unreachable
    100 }
    101 
    102 define void @outer_no_resume_or_call() {
    103   invoke void @inner_no_resume_or_call()
    104       to label %cont unwind label %lpad
    105 cont:
    106   ret void
    107 lpad:
    108   %lp = landingpad i32 personality i8* null
    109       catch i8* @exception_outer
    110   resume i32 %lp
    111 }
    112 ; CHECK: define void @outer_no_resume_or_call()
    113 ; CHECK: %lp.i = landingpad
    114 ; CHECK-NEXT: catch i8* @exception_inner
    115 ; CHECK-NEXT: catch i8* @exception_outer
    116 ; Check that there isn't another "catch" clause:
    117 ; CHECK-NEXT: call void @abort()
    118