xref: /aosp_15_r20/external/llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -globalopt -S -o - < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker@glbl = internal global i8* null
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdefine void @test1a() {
6*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1a(
7*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: store
8*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ret void
9*9880d681SAndroid Build Coastguard Worker  store i8* null, i8** @glbl
10*9880d681SAndroid Build Coastguard Worker  ret void
11*9880d681SAndroid Build Coastguard Worker}
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Workerdefine void @test1b(i8* %p) {
14*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1b(
15*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: store
16*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ret void
17*9880d681SAndroid Build Coastguard Worker  store i8* %p, i8** @glbl
18*9880d681SAndroid Build Coastguard Worker  ret void
19*9880d681SAndroid Build Coastguard Worker}
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Workerdefine void @test2() {
22*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test2(
23*9880d681SAndroid Build Coastguard Worker; CHECK: alloca i8
24*9880d681SAndroid Build Coastguard Worker  %txt = alloca i8
25*9880d681SAndroid Build Coastguard Worker  call void @foo2(i8* %txt)
26*9880d681SAndroid Build Coastguard Worker  %call2 = call i8* @strdup(i8* %txt)
27*9880d681SAndroid Build Coastguard Worker  store i8* %call2, i8** @glbl
28*9880d681SAndroid Build Coastguard Worker  ret void
29*9880d681SAndroid Build Coastguard Worker}
30*9880d681SAndroid Build Coastguard Workerdeclare i8* @strdup(i8*)
31*9880d681SAndroid Build Coastguard Workerdeclare void @foo2(i8*)
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Workerdefine void @test3() uwtable personality i32 (i32, i64, i8*, i8*)* @__gxx_personality_v0 {
34*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test3(
35*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: bb1:
36*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: bb2:
37*9880d681SAndroid Build Coastguard Worker; CHECK: invoke
38*9880d681SAndroid Build Coastguard Worker  %ptr = invoke i8* @_Znwm(i64 1)
39*9880d681SAndroid Build Coastguard Worker          to label %bb1 unwind label %bb2
40*9880d681SAndroid Build Coastguard Workerbb1:
41*9880d681SAndroid Build Coastguard Worker  store i8* %ptr, i8** @glbl
42*9880d681SAndroid Build Coastguard Worker  unreachable
43*9880d681SAndroid Build Coastguard Workerbb2:
44*9880d681SAndroid Build Coastguard Worker  %tmp1 = landingpad { i8*, i32 }
45*9880d681SAndroid Build Coastguard Worker          cleanup
46*9880d681SAndroid Build Coastguard Worker  resume { i8*, i32 } %tmp1
47*9880d681SAndroid Build Coastguard Worker}
48*9880d681SAndroid Build Coastguard Workerdeclare i32 @__gxx_personality_v0(i32, i64, i8*, i8*)
49*9880d681SAndroid Build Coastguard Workerdeclare i8* @_Znwm(i64)
50