Home | History | Annotate | Download | only in WinEH
      1 ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
      2 
      3 ; This test is based on the following code:
      4 ;
      5 ; void test()
      6 ; {
      7 ;   try {
      8 ;     may_throw();
      9 ;   } catch (...) {
     10 ;     handle_exception();
     11 ;   }
     12 ; }
     13 ;
     14 ; Parts of the IR have been hand-edited to simplify the test case.
     15 ; The full IR will be restored when Windows C++ EH support is complete.
     16 
     17 ; ModuleID = 'catch-all.cpp'
     18 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
     19 target triple = "x86_64-pc-windows-msvc"
     20 
     21 ; The function entry in this case remains unchanged.
     22 ; CHECK: define void @_Z4testv()
     23 ; CHECK: entry:
     24 ; CHECK:   invoke void @_Z9may_throwv()
     25 ; CHECK:           to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
     26 
     27 ; Function Attrs: uwtable
     28 define void @_Z4testv() #0 {
     29 entry:
     30   %exn.slot = alloca i8*
     31   %ehselector.slot = alloca i32
     32   invoke void @_Z9may_throwv()
     33           to label %invoke.cont unwind label %lpad
     34 
     35 invoke.cont:                                      ; preds = %entry
     36   br label %try.cont
     37 
     38 ; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
     39 ; CHECK:   landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
     40 ; CHECK-NEXT:           catch i8* null
     41 ; CHECK-NEXT:   [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @_Z4testv.catch)
     42 ; CHECK-NEXT:   indirectbr i8* [[RECOVER]], [label %try.cont]
     43 
     44 lpad:                                             ; preds = %entry
     45   %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
     46           catch i8* null
     47   %tmp1 = extractvalue { i8*, i32 } %tmp, 0
     48   store i8* %tmp1, i8** %exn.slot
     49   %tmp2 = extractvalue { i8*, i32 } %tmp, 1
     50   store i32 %tmp2, i32* %ehselector.slot
     51   br label %catch
     52 
     53 ; CHECK-NOT: catch:
     54 
     55 catch:                                            ; preds = %lpad
     56   %exn = load i8*, i8** %exn.slot
     57   call void @llvm.eh.begincatch(i8* %exn, i8* null) #2
     58   call void @_Z16handle_exceptionv()
     59   br label %invoke.cont2
     60 
     61 ; CHECK-NOT: invoke.cont2:
     62 
     63 invoke.cont2:                                     ; preds = %catch
     64   call void @llvm.eh.endcatch()
     65   br label %try.cont
     66 
     67 try.cont:                                         ; preds = %invoke.cont2, %invoke.cont
     68   ret void
     69 
     70 ; CHECK: }
     71 }
     72 
     73 ; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*)
     74 ; CHECK: entry:
     75 ; CHECK:   call void @_Z16handle_exceptionv()
     76 ; CHECK:   ret i8* blockaddress(@_Z4testv, %try.cont)
     77 ; CHECK: }
     78 
     79 declare void @_Z9may_throwv() #1
     80 
     81 declare i32 @__CxxFrameHandler3(...)
     82 
     83 declare void @llvm.eh.begincatch(i8*, i8*)
     84 
     85 declare void @_Z16handle_exceptionv() #1
     86 
     87 declare void @llvm.eh.endcatch()
     88 
     89 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
     90 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
     91 attributes #2 = { noinline noreturn nounwind }
     92 attributes #3 = { nounwind }
     93 attributes #4 = { noreturn nounwind }
     94 
     95 !llvm.ident = !{!0}
     96 
     97 !0 = !{!"clang version 3.7.0 (trunk 226027)"}
     98