1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -instcombine -S < %s | FileCheck %s
3target triple = "x86_64-pc-windows-msvc"
4
5define i1 @test1(i8* %p) personality i32 (...)* @__CxxFrameHandler3 {
6; CHECK-LABEL: @test1(
7; CHECK-NEXT:  entry:
8; CHECK-NEXT:    [[A:%.*]] = getelementptr i8, i8* [[P:%.*]], i64 1
9; CHECK-NEXT:    invoke void @may_throw()
10; CHECK-NEXT:    to label [[INVOKE_CONT:%.*]] unwind label [[CATCH_DISPATCH:%.*]]
11; CHECK:       invoke.cont:
12; CHECK-NEXT:    [[B:%.*]] = getelementptr i8, i8* [[P]], i64 2
13; CHECK-NEXT:    invoke void @may_throw()
14; CHECK-NEXT:    to label [[EXIT:%.*]] unwind label [[CATCH_DISPATCH]]
15; CHECK:       catch.dispatch:
16; CHECK-NEXT:    [[C:%.*]] = phi i8* [ [[B]], [[INVOKE_CONT]] ], [ [[A]], [[ENTRY:%.*]] ]
17; CHECK-NEXT:    [[TMP1:%.*]] = catchswitch within none [label %catch] unwind to caller
18; CHECK:       catch:
19; CHECK-NEXT:    [[TMP2:%.*]] = catchpad within [[TMP1]] [i8* null, i32 64, i8* null]
20; CHECK-NEXT:    catchret from [[TMP2]] to label [[EXIT]]
21; CHECK:       exit:
22; CHECK-NEXT:    [[D:%.*]] = phi i8* [ [[A]], [[INVOKE_CONT]] ], [ [[C]], [[CATCH:%.*]] ]
23; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8* [[D]], [[A]]
24; CHECK-NEXT:    ret i1 [[CMP]]
25;
26entry:
27  %a = getelementptr i8, i8* %p, i64 1
28  invoke void @may_throw()
29  to label %invoke.cont unwind label %catch.dispatch
30
31invoke.cont:
32  %b = getelementptr inbounds i8, i8* %a, i64 1
33  invoke void @may_throw()
34  to label %exit unwind label %catch.dispatch
35
36catch.dispatch:
37  %c = phi i8* [ %b, %invoke.cont ], [ %a, %entry ]
38  %tmp1 = catchswitch within none [label %catch] unwind to caller
39
40catch:
41  %tmp2 = catchpad within %tmp1 [i8* null, i32 64, i8* null]
42  catchret from %tmp2 to label %exit
43
44exit:
45  %d = phi i8* [ %a, %invoke.cont ], [ %c, %catch ]
46  %cmp = icmp eq i8* %d, %a
47  ret i1 %cmp
48}
49
50declare void @may_throw()
51
52declare i32 @__CxxFrameHandler3(...)
53