1; Test multiple return values (LLVM ABI extension) 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu -verify-machineinstrs| FileCheck %s 4 5; Up to four integer return values fit into GPRs. 6define { i64, i64, i64, i64 } @f1() { 7; CHECK-LABEL: f1: 8; CHECK: lghi %r2, 0 9; CHECK: lghi %r3, 1 10; CHECK: lghi %r4, 2 11; CHECK: lghi %r5, 3 12; CHECK: br %r14 13 ret { i64, i64, i64, i64 } { i64 0, i64 1, i64 2, i64 3 } 14} 15 16; More than four integer return values use sret. 17define { i64, i64, i64, i64, i64 } @f2() { 18; CHECK-LABEL: f2: 19; CHECK: mvghi 32(%r2), 4 20; CHECK: mvghi 24(%r2), 3 21; CHECK: mvghi 16(%r2), 2 22; CHECK: mvghi 8(%r2), 1 23; CHECK: mvghi 0(%r2), 0 24; CHECK: br %r14 25 ret { i64, i64, i64, i64, i64 } { i64 0, i64 1, i64 2, i64 3, i64 4 } 26} 27 28; Up to four floating-point return values fit into FPRs. 29define { double, double, double, double } @f3() { 30; CHECK-LABEL: f3: 31; CHECK: larl [[TMP:%r[0-5]]], .LCPI 32; CHECK: ldeb %f0, 0([[TMP]]) 33; CHECK: larl [[TMP:%r[0-5]]], .LCPI 34; CHECK: ldeb %f2, 0([[TMP]]) 35; CHECK: larl [[TMP:%r[0-5]]], .LCPI 36; CHECK: ldeb %f4, 0([[TMP]]) 37; CHECK: larl [[TMP:%r[0-5]]], .LCPI 38; CHECK: ldeb %f6, 0([[TMP]]) 39; CHECK: br %r14 40 ret { double, double, double, double } 41 { double 1.0, double 2.0, double 3.0, double 4.0 } 42} 43 44; More than four floating-point return values use sret. 45define { double, double, double, double, double } @f4() { 46; CHECK-LABEL: f4: 47; CHECK: llihh [[TMP:%r[0-5]]], 16404 48; CHECK: stg [[TMP]], 32(%r2) 49; CHECK: llihh [[TMP:%r[0-5]]], 16400 50; CHECK: stg [[TMP]], 24(%r2) 51; CHECK: llihh [[TMP:%r[0-5]]], 16392 52; CHECK: stg [[TMP]], 16(%r2) 53; CHECK: llihh [[TMP:%r[0-5]]], 16384 54; CHECK: stg [[TMP]], 8(%r2) 55; CHECK: llihh [[TMP:%r[0-5]]], 16368 56; CHECK: stg [[TMP]], 0(%r2) 57; CHECK: br %r14 58 ret { double, double, double, double, double } 59 { double 1.0, double 2.0, double 3.0, double 4.0, double 5.0 } 60} 61