1 ; RUN: llc < %s | FileCheck %s 2 3 ; Started from this code: 4 ; void f() { 5 ; try { 6 ; try { 7 ; throw 42; 8 ; } catch (int) { 9 ; } 10 ; try { 11 ; throw 42; 12 ; } catch (int) { 13 ; } 14 ; } catch (int) { 15 ; } 16 ; } 17 18 ; Don't tail merge the calls. 19 ; CHECK: calll __CxxThrowException@8 20 ; CHECK: calll __CxxThrowException@8 21 22 ; ModuleID = 'cppeh-pingpong.cpp' 23 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 24 target triple = "i686-pc-windows-msvc" 25 26 %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] } 27 %eh.CatchableType = type { i32, i8*, i32, i32, i32, i32, i8* } 28 %eh.CatchableTypeArray.1 = type { i32, [1 x %eh.CatchableType*] } 29 %eh.ThrowInfo = type { i32, i8*, i8*, i8* } 30 31 $"\01??_R0H@8" = comdat any 32 33 $"_CT??_R0H@84" = comdat any 34 35 $_CTA1H = comdat any 36 37 $_TI1H = comdat any 38 39 @"\01??_7type_info@@6B@" = external constant i8* 40 @"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat 41 @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i32 -1, i32 0, i32 4, i8* null }, section ".xdata", comdat 42 @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0H@84"] }, section ".xdata", comdat 43 @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @_CTA1H to i8*) }, section ".xdata", comdat 44 45 define void @"\01?f@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { 46 entry: 47 %i = alloca i32, align 4 48 %tmp = alloca i32, align 4 49 %tmp1 = alloca i32, align 4 50 store i32 0, i32* %i, align 4 51 store i32 42, i32* %tmp, align 4 52 %0 = bitcast i32* %tmp to i8* 53 invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #1 54 to label %unreachable unwind label %catch.dispatch 55 56 catch.dispatch: ; preds = %entry 57 %cs1 = catchswitch within none [label %catch] unwind label %catch.dispatch.7 58 59 catch: ; preds = %catch.dispatch 60 %1 = catchpad within %cs1 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null] 61 catchret from %1 to label %catchret.dest 62 63 catchret.dest: ; preds = %catch 64 br label %try.cont 65 66 try.cont: ; preds = %catchret.dest 67 store i32 42, i32* %tmp1, align 4 68 %2 = bitcast i32* %tmp1 to i8* 69 invoke void @_CxxThrowException(i8* %2, %eh.ThrowInfo* @_TI1H) #1 70 to label %unreachable unwind label %catch.dispatch.2 71 72 catch.dispatch.2: ; preds = %try.cont 73 %cs2 = catchswitch within none [label %catch.4] unwind label %catch.dispatch.7 74 75 catch.4: ; preds = %catch.dispatch.2 76 %3 = catchpad within %cs2 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null] 77 catchret from %3 to label %catchret.dest.5 78 79 catchret.dest.5: ; preds = %catch.4 80 br label %try.cont.6 81 82 try.cont.6: ; preds = %catchret.dest.5 83 br label %try.cont.11 84 85 catch.dispatch.7: 86 %cs3 = catchswitch within none [label %catch.9] unwind to caller 87 88 catch.9: ; preds = %catch.dispatch.7 89 %4 = catchpad within %cs3 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null] 90 catchret from %4 to label %catchret.dest.10 91 92 catchret.dest.10: ; preds = %catch.9 93 br label %try.cont.11 94 95 try.cont.11: ; preds = %catchret.dest.10, %try.cont.6 96 ret void 97 98 unreachable: ; preds = %try.cont, %entry 99 unreachable 100 } 101 102 declare x86_stdcallcc void @_CxxThrowException(i8*, %eh.ThrowInfo*) 103 104 declare i32 @__CxxFrameHandler3(...) 105 106 attributes #0 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 107 attributes #1 = { noreturn } 108
