1 ; RUN: opt -lcssa -S < %s | FileCheck %s
2 ; RUN: opt -passes=lcssa -S < %s | FileCheck %s
4 ; This test is based on the following C++ code:
8 ; for (int i=0; i<12; i++) {
19 ; The loop info analysis identifies the catch pad for the second catch as being
20 ; outside the loop (because it returns to %for.end) but the associated
21 ; catchswitch block is identified as being inside the loop. Because of this
22 ; analysis, the LCSSA pass wants to create a PHI node in the catchpad block
23 ; for the catchswitch value, but this is a token, so it can't.
25 define void @f() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
27 %tmp = alloca i32, align 4
28 %i7 = alloca i32, align 4
31 for.cond: ; preds = %for.inc, %entry
32 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
33 %cmp = icmp slt i32 %i.0, 12
34 br i1 %cmp, label %for.body, label %for.end
36 for.body: ; preds = %for.cond
37 %cond = icmp eq i32 %i.0, 3
38 br i1 %cond, label %if.then, label %for.inc
40 if.then: ; preds = %for.body
41 store i32 %i.0, i32* %tmp, align 4
42 %tmp1 = bitcast i32* %tmp to i8*
43 invoke void @_CxxThrowException(i8* %tmp1, %eh.ThrowInfo* nonnull @_TI1H) #1
44 to label %unreachable unwind label %catch.dispatch
46 catch.dispatch: ; preds = %if.then
47 %tmp2 = catchswitch within none [label %catch, label %catch2] unwind to caller
49 catch: ; preds = %catch.dispatch
50 %tmp3 = catchpad within %tmp2 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i32* %i7]
51 catchret from %tmp3 to label %for.inc
53 catch2: ; preds = %catch.dispatch
54 %tmp4 = catchpad within %tmp2 [i8* null, i32 64, i8* null]
55 catchret from %tmp4 to label %for.end
57 for.inc: ; preds = %catch, %for.body
58 %inc = add nsw i32 %i.0, 1
61 for.end: ; preds = %catch2, %for.cond
64 unreachable: ; preds = %if.then
68 ; CHECK-LABEL: define void @f()
71 ; CHECK: %tmp4 = catchpad within %tmp2
72 ; CHECK: catchret from %tmp4 to label %for.end
74 %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
75 %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
76 %eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
77 %eh.ThrowInfo = type { i32, i32, i32, i32 }
79 $"\01??_R0H@8" = comdat any
81 $"_CT??_R0H@84" = comdat any
87 @"\01??_7type_info@@6B@" = external constant i8*
88 @"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
89 @__ImageBase = external constant i8
90 @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
91 @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
92 @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
94 declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
96 declare i32 @__CxxFrameHandler3(...)