1 ; RUN: opt -passes=lcssa -S < %s | FileCheck %s
3 ; This test is based on the following C++ code:
7 ; for (int i=0; i<12; i++) {
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.
24 define void @f() personality ptr @__CxxFrameHandler3 {
26 %tmp = alloca i32, align 4
27 %i7 = alloca i32, align 4
30 for.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
35 for.body: ; preds = %for.cond
36 %cond = icmp eq i32 %i.0, 3
37 br i1 %cond, label %if.then, label %for.inc
39 if.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
44 catch.dispatch: ; preds = %if.then
45 %tmp2 = catchswitch within none [label %catch, label %catch2] unwind to caller
47 catch: ; preds = %catch.dispatch
48 %tmp3 = catchpad within %tmp2 [ptr @"\01??_R0H@8", i32 0, ptr %i7]
49 catchret from %tmp3 to label %for.inc
51 catch2: ; preds = %catch.dispatch
52 %tmp4 = catchpad within %tmp2 [ptr null, i32 64, ptr null]
53 catchret from %tmp4 to label %for.end
55 for.inc: ; preds = %catch, %for.body
56 %inc = add nsw i32 %i.0, 1
59 for.end: ; preds = %catch2, %for.cond
62 unreachable: ; preds = %if.then
66 ; CHECK-LABEL: define void @f()
69 ; CHECK: %tmp4 = catchpad within %tmp2
70 ; CHECK: catchret from %tmp4 to label %for.end
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 }
77 $"\01??_R0H@8" = comdat any
79 $"_CT??_R0H@84" = comdat any
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
92 declare void @_CxxThrowException(ptr, ptr)
94 declare i32 @__CxxFrameHandler3(...)