forked from OSchip/llvm-project
58 lines
1.5 KiB
LLVM
58 lines
1.5 KiB
LLVM
; Test calling functions with multiple return values (LLVM ABI extension)
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
; Up to four integer return values fit into GPRs.
|
|
declare { i64, i64, i64, i64 } @bar1()
|
|
|
|
define i64 @f1() {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: brasl %r14, bar1
|
|
; CHECK: lgr %r2, %r5
|
|
; CHECK: br %r14
|
|
%mret = call { i64, i64, i64, i64 } @bar1()
|
|
%ret = extractvalue { i64, i64, i64, i64 } %mret, 3
|
|
ret i64 %ret
|
|
}
|
|
|
|
; More than four integer return values use sret.
|
|
declare { i64, i64, i64, i64, i64 } @bar2()
|
|
|
|
define i64 @f2() {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: la %r2, 160(%r15)
|
|
; CHECK: brasl %r14, bar2
|
|
; CHECK: lg %r2, 192(%r15)
|
|
; CHECK: br %r14
|
|
%mret = call { i64, i64, i64, i64, i64 } @bar2()
|
|
%ret = extractvalue { i64, i64, i64, i64, i64 } %mret, 4
|
|
ret i64 %ret
|
|
}
|
|
|
|
; Up to four floating-point return values fit into GPRs.
|
|
declare { double, double, double, double } @bar3()
|
|
|
|
define double @f3() {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: brasl %r14, bar3
|
|
; CHECK: ldr %f0, %f6
|
|
; CHECK: br %r14
|
|
%mret = call { double, double, double, double } @bar3()
|
|
%ret = extractvalue { double, double, double, double } %mret, 3
|
|
ret double %ret
|
|
}
|
|
|
|
; More than four integer return values use sret.
|
|
declare { double, double, double, double, double } @bar4()
|
|
|
|
define double @f4() {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: la %r2, 160(%r15)
|
|
; CHECK: brasl %r14, bar4
|
|
; CHECK: ld %f0, 192(%r15)
|
|
; CHECK: br %r14
|
|
%mret = call { double, double, double, double, double } @bar4()
|
|
%ret = extractvalue { double, double, double, double, double } %mret, 4
|
|
ret double %ret
|
|
}
|