1*9880d681SAndroid Build Coastguard Worker; Test calling functions with multiple return values (LLVM ABI extension) 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; Up to four integer return values fit into GPRs. 6*9880d681SAndroid Build Coastguard Workerdeclare { i64, i64, i64, i64 } @bar1() 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerdefine i64 @f1() { 9*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f1: 10*9880d681SAndroid Build Coastguard Worker; CHECK: brasl %r14, bar1 11*9880d681SAndroid Build Coastguard Worker; CHECK: lgr %r2, %r5 12*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 13*9880d681SAndroid Build Coastguard Worker %mret = call { i64, i64, i64, i64 } @bar1() 14*9880d681SAndroid Build Coastguard Worker %ret = extractvalue { i64, i64, i64, i64 } %mret, 3 15*9880d681SAndroid Build Coastguard Worker ret i64 %ret 16*9880d681SAndroid Build Coastguard Worker} 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Worker; More than four integer return values use sret. 19*9880d681SAndroid Build Coastguard Workerdeclare { i64, i64, i64, i64, i64 } @bar2() 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerdefine i64 @f2() { 22*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f2: 23*9880d681SAndroid Build Coastguard Worker; CHECK: la %r2, 160(%r15) 24*9880d681SAndroid Build Coastguard Worker; CHECK: brasl %r14, bar2 25*9880d681SAndroid Build Coastguard Worker; CHECK: lg %r2, 192(%r15) 26*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 27*9880d681SAndroid Build Coastguard Worker %mret = call { i64, i64, i64, i64, i64 } @bar2() 28*9880d681SAndroid Build Coastguard Worker %ret = extractvalue { i64, i64, i64, i64, i64 } %mret, 4 29*9880d681SAndroid Build Coastguard Worker ret i64 %ret 30*9880d681SAndroid Build Coastguard Worker} 31*9880d681SAndroid Build Coastguard Worker 32*9880d681SAndroid Build Coastguard Worker; Up to four floating-point return values fit into GPRs. 33*9880d681SAndroid Build Coastguard Workerdeclare { double, double, double, double } @bar3() 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Workerdefine double @f3() { 36*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f3: 37*9880d681SAndroid Build Coastguard Worker; CHECK: brasl %r14, bar3 38*9880d681SAndroid Build Coastguard Worker; CHECK: ldr %f0, %f6 39*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 40*9880d681SAndroid Build Coastguard Worker %mret = call { double, double, double, double } @bar3() 41*9880d681SAndroid Build Coastguard Worker %ret = extractvalue { double, double, double, double } %mret, 3 42*9880d681SAndroid Build Coastguard Worker ret double %ret 43*9880d681SAndroid Build Coastguard Worker} 44*9880d681SAndroid Build Coastguard Worker 45*9880d681SAndroid Build Coastguard Worker; More than four integer return values use sret. 46*9880d681SAndroid Build Coastguard Workerdeclare { double, double, double, double, double } @bar4() 47*9880d681SAndroid Build Coastguard Worker 48*9880d681SAndroid Build Coastguard Workerdefine double @f4() { 49*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f4: 50*9880d681SAndroid Build Coastguard Worker; CHECK: la %r2, 160(%r15) 51*9880d681SAndroid Build Coastguard Worker; CHECK: brasl %r14, bar4 52*9880d681SAndroid Build Coastguard Worker; CHECK: ld %f0, 192(%r15) 53*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 54*9880d681SAndroid Build Coastguard Worker %mret = call { double, double, double, double, double } @bar4() 55*9880d681SAndroid Build Coastguard Worker %ret = extractvalue { double, double, double, double, double } %mret, 4 56*9880d681SAndroid Build Coastguard Worker ret double %ret 57*9880d681SAndroid Build Coastguard Worker} 58