xref: /aosp_15_r20/external/llvm/test/CodeGen/SystemZ/ret-addr-01.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; Test support for the llvm.returnaddress intrinsic.
2*9880d681SAndroid Build Coastguard Worker;
3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Worker; The current function's return address is in the link register.
6*9880d681SAndroid Build Coastguard Workerdefine i8* @rt0() norecurse nounwind readnone {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: rt0:
9*9880d681SAndroid Build Coastguard Worker; CHECK: lgr  %r2, %r14
10*9880d681SAndroid Build Coastguard Worker; CHECK: br   %r14
11*9880d681SAndroid Build Coastguard Worker  %0 = tail call i8* @llvm.returnaddress(i32 0)
12*9880d681SAndroid Build Coastguard Worker  ret i8* %0
13*9880d681SAndroid Build Coastguard Worker}
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Workerdeclare i8* @llvm.returnaddress(i32) nounwind readnone
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