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1; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s2 3; The current function's frame address is the address of4; the optional back chain slot.5define ptr @fp0() nounwind {6entry:7; CHECK-LABEL: fp0:8; CHECK: la %r2, 0(%r15)9; CHECK: br %r1410 %0 = tail call ptr @llvm.frameaddress(i32 0)11 ret ptr %012}13 14; Check that the frame address is correct in a presence15; of a stack frame.16define ptr @fp0f() nounwind {17entry:18; CHECK-LABEL: fp0f:19; CHECK: aghi %r15, -16820; CHECK: la %r2, 168(%r15)21; CHECK: aghi %r15, 16822; CHECK: br %r1423 %0 = alloca i64, align 824 %1 = tail call ptr @llvm.frameaddress(i32 0)25 ret ptr %126}27 28; Check the caller's frame address.29define ptr @fpcaller() nounwind "backchain" {30entry:31; CHECK-LABEL: fpcaller:32; CHECK: lg %r2, 0(%r15)33; CHECK: br %r1434 %0 = tail call ptr @llvm.frameaddress(i32 1)35 ret ptr %036}37 38; Check the caller's frame address.39define ptr @fpcallercaller() nounwind "backchain" {40entry:41; CHECK-LABEL: fpcallercaller:42; CHECK: lg %r1, 0(%r15)43; CHECK: lg %r2, 0(%r1)44; CHECK: br %r1445 %0 = tail call ptr @llvm.frameaddress(i32 2)46 ret ptr %047}48 49declare ptr @llvm.frameaddress(i32) nounwind readnone50