xref: /aosp_15_r20/external/llvm/test/Transforms/GlobalOpt/deadfunction.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -globalopt -S | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: test
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdeclare void @aa()
6*9880d681SAndroid Build Coastguard Workerdeclare void @bb()
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Worker; Test that we can erase a function which has a blockaddress referring to it
9*9880d681SAndroid Build Coastguard Worker@test.x = internal unnamed_addr constant [3 x i8*] [i8* blockaddress(@test, %a), i8* blockaddress(@test, %b), i8* blockaddress(@test, %c)], align 16
10*9880d681SAndroid Build Coastguard Workerdefine internal void @test(i32 %n) nounwind noinline {
11*9880d681SAndroid Build Coastguard Workerentry:
12*9880d681SAndroid Build Coastguard Worker  %idxprom = sext i32 %n to i64
13*9880d681SAndroid Build Coastguard Worker  %arrayidx = getelementptr inbounds [3 x i8*], [3 x i8*]* @test.x, i64 0, i64 %idxprom
14*9880d681SAndroid Build Coastguard Worker  %0 = load i8*, i8** %arrayidx, align 8
15*9880d681SAndroid Build Coastguard Worker  indirectbr i8* %0, [label %a, label %b, label %c]
16*9880d681SAndroid Build Coastguard Worker
17*9880d681SAndroid Build Coastguard Workera:
18*9880d681SAndroid Build Coastguard Worker  tail call void @aa() nounwind
19*9880d681SAndroid Build Coastguard Worker  br label %b
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Workerb:
22*9880d681SAndroid Build Coastguard Worker  tail call void @bb() nounwind
23*9880d681SAndroid Build Coastguard Worker  br label %c
24*9880d681SAndroid Build Coastguard Worker
25*9880d681SAndroid Build Coastguard Workerc:
26*9880d681SAndroid Build Coastguard Worker  ret void
27*9880d681SAndroid Build Coastguard Worker}
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