1; RUN: opt -passes=lcssa -S < %s | FileCheck %s 2 3; This test is based on the following C++ code: 4; 5; void f() 6; { 7; for (int i=0; i<12; i++) { 8; try { 9; if (i==3) 10; throw i; 11; } catch (int) { 12; continue; 13; } catch (...) { } 14; if (i==3) break; 15; } 16; } 17; 18; The loop info analysis identifies the catch pad for the second catch as being 19; outside the loop (because it returns to %for.end) but the associated 20; catchswitch block is identified as being inside the loop. Because of this 21; analysis, the LCSSA pass wants to create a PHI node in the catchpad block 22; for the catchswitch value, but this is a token, so it can't. 23 24define void @f() personality ptr @__CxxFrameHandler3 { 25entry: 26 %tmp = alloca i32, align 4 27 %i7 = alloca i32, align 4 28 br label %for.cond 29 30for.cond: ; preds = %for.inc, %entry 31 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] 32 %cmp = icmp slt i32 %i.0, 12 33 br i1 %cmp, label %for.body, label %for.end 34 35for.body: ; preds = %for.cond 36 %cond = icmp eq i32 %i.0, 3 37 br i1 %cond, label %if.then, label %for.inc 38 39if.then: ; preds = %for.body 40 store i32 %i.0, ptr %tmp, align 4 41 invoke void @_CxxThrowException(ptr %tmp, ptr nonnull @_TI1H) #1 42 to label %unreachable unwind label %catch.dispatch 43 44catch.dispatch: ; preds = %if.then 45 %tmp2 = catchswitch within none [label %catch, label %catch2] unwind to caller 46 47catch: ; preds = %catch.dispatch 48 %tmp3 = catchpad within %tmp2 [ptr @"\01??_R0H@8", i32 0, ptr %i7] 49 catchret from %tmp3 to label %for.inc 50 51catch2: ; preds = %catch.dispatch 52 %tmp4 = catchpad within %tmp2 [ptr null, i32 64, ptr null] 53 catchret from %tmp4 to label %for.end 54 55for.inc: ; preds = %catch, %for.body 56 %inc = add nsw i32 %i.0, 1 57 br label %for.cond 58 59for.end: ; preds = %catch2, %for.cond 60 ret void 61 62unreachable: ; preds = %if.then 63 unreachable 64} 65 66; CHECK-LABEL: define void @f() 67; CHECK: catch2: 68; CHECK-NOT: phi 69; CHECK: %tmp4 = catchpad within %tmp2 70; CHECK: catchret from %tmp4 to label %for.end 71 72%rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] } 73%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 } 74%eh.CatchableTypeArray.1 = type { i32, [1 x i32] } 75%eh.ThrowInfo = type { i32, i32, i32, i32 } 76 77$"\01??_R0H@8" = comdat any 78 79$"_CT??_R0H@84" = comdat any 80 81$_CTA1H = comdat any 82 83$_TI1H = comdat any 84 85@"\01??_7type_info@@6B@" = external constant ptr 86@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"\01??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat 87@__ImageBase = external constant i8 88@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R0H@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat 89@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"_CT??_R0H@84" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32)] }, section ".xdata", comdat 90@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @_CTA1H to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, section ".xdata", comdat 91 92declare void @_CxxThrowException(ptr, ptr) 93 94declare i32 @__CxxFrameHandler3(...) 95