xref: /llvm-project/llvm/test/Bitcode/blockaddress-nested-users.ll (revision 6baaad740a5abb4bfcff022a8114abb4eea66a2d)
1*6baaad74SWende Tan; RUN: llvm-as %s -o %t.bc
2*6baaad74SWende Tan; RUN: llvm-bcanalyzer -dump %t.bc | FileCheck %s
3*6baaad74SWende Tan; RUN: llvm-dis %t.bc
4*6baaad74SWende Tan
5*6baaad74SWende Tan; There's a curious case where blockaddress constants may refer to functions
6*6baaad74SWende Tan; outside of the function they're used in. There's a special bitcode function
7*6baaad74SWende Tan; code, FUNC_CODE_BLOCKADDR_USERS, used to signify that this is the case.
8*6baaad74SWende Tan
9*6baaad74SWende Tan; The intent of this test is two-fold:
10*6baaad74SWende Tan; 1. Ensure we produce BLOCKADDR_USERS bitcode function code on the first fn,
11*6baaad74SWende Tan;    @repro, since @fun and @fun2 both refer to @repro via blockaddress
12*6baaad74SWende Tan;    constants.
13*6baaad74SWende Tan; 2. Ensure we can round-trip serializing+desearlizing such case.
14*6baaad74SWende Tan
15*6baaad74SWende Tan; CHECK: <FUNCTION_BLOCK
16*6baaad74SWende Tan; CHECK: <BLOCKADDR_USERS op0=1 op1=2
17*6baaad74SWende Tan; CHECK: <FUNCTION_BLOCK
18*6baaad74SWende Tan; CHECK: <FUNCTION_BLOCK
19*6baaad74SWende Tan
20*6baaad74SWende Tandefine void @repro() {
21*6baaad74SWende Tan  br label %label
22*6baaad74SWende Tan
23*6baaad74SWende Tanlabel:
24*6baaad74SWende Tan  call void @fun()
25*6baaad74SWende Tan  ret void
26*6baaad74SWende Tan}
27*6baaad74SWende Tan
28*6baaad74SWende Tandefine void @fun() noinline {
29*6baaad74SWende Tan  call void @f(i64 add (i64 ptrtoint (i8* blockaddress(@repro, %label) to i64), i64 1))
30*6baaad74SWende Tan  ret void
31*6baaad74SWende Tan}
32*6baaad74SWende Tan
33*6baaad74SWende Tandefine void @fun2() noinline {
34*6baaad74SWende Tan  call void @f(i64 add (i64 ptrtoint (i8* blockaddress(@repro, %label) to i64), i64 2))
35*6baaad74SWende Tan  ret void
36*6baaad74SWende Tan}
37*6baaad74SWende Tan
38*6baaad74SWende Tandeclare void @f(i64)
39