; Test support for the llvm.returnaddress intrinsic. ; ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s ; The current function's return address is in the link register. define ptr @rt0() norecurse nounwind readnone { entry: ; CHECK-LABEL: rt0: ; CHECK: lgr %r2, %r14 ; CHECK: br %r14 %0 = tail call ptr @llvm.returnaddress(i32 0) ret ptr %0 } ; Check the caller's return address. define ptr @rtcaller() nounwind "backchain" { entry: ; CHECK-LABEL: rtcaller: ; CHECK: lg %r1, 0(%r15) ; CHECK lg %r2, 112(%r1) ; CHECK: br %r14 %0 = tail call ptr @llvm.returnaddress(i32 1) ret ptr %0 } ; Check the caller's caller's return address. define ptr @rtcallercaller() nounwind "backchain" { entry: ; CHECK-LABEL: rtcallercaller: ; CHECK: lg %r1, 0(%r15) ; CHECK: lg %r1, 0(%r1) ; CHECK lg %r2, 112(%r1) ; CHECK: br %r14 %0 = tail call ptr @llvm.returnaddress(i32 2) ret ptr %0 } declare ptr @llvm.returnaddress(i32) nounwind readnone