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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
;
; Test saving of vararg registers and backchain with packed stack.
%struct.__va_list_tag = type { i64, i64, i8*, i8* }
declare void @llvm.va_start(i8*)
attributes #0 = { nounwind "packed-stack"="true" }
define void @fun0(i64 %g0, double %d0, i64 %n, ...) #0 {
; CHECK-LABEL: fun0:
; CHECK: stmg %r4, %r15, 32(%r15)
; CHECK-NEXT: aghi %r15, -192
; CHECK-NEXT: std %f2, 328(%r15)
; CHECK-NEXT: std %f4, 336(%r15)
; CHECK-NEXT: std %f6, 344(%r15)
; CHECK-NEXT: la %r0, 352(%r15)
; CHECK-NEXT: stg %r0, 176(%r15)
; CHECK-NEXT: la %r0, 192(%r15)
; CHECK-NEXT: stg %r0, 184(%r15)
; CHECK-NEXT: mvghi 160(%r15), 2
; CHECK-NEXT: mvghi 168(%r15), 1
; CHECK-NEXT: lmg %r6, %r15, 240(%r15)
; CHECK-NEXT: br %r14
entry:
%vl = alloca [1 x %struct.__va_list_tag], align 8
%0 = bitcast [1 x %struct.__va_list_tag]* %vl to i8*
call void @llvm.va_start(i8* nonnull %0)
ret void
}
attributes #1 = { nounwind "packed-stack"="true" "use-soft-float"="true" }
define void @fun1(i64 %g0, double %d0, i64 %n, ...) #1 {
; CHECK-LABEL: fun1:
; CHECK: stmg %r5, %r15, 72(%r15)
; CHECK-NEXT: aghi %r15, -160
; CHECK-NEXT: la %r0, 192(%r15)
; CHECK-NEXT: stg %r0, 184(%r15)
; CHECK-NEXT: la %r0, 320(%r15)
; CHECK-NEXT: stg %r0, 176(%r15)
; CHECK-NEXT: mvghi 168(%r15), 0
; CHECK-NEXT: mvghi 160(%r15), 3
; CHECK-NEXT: lmg %r6, %r15, 240(%r15)
; CHECK-NEXT: br %r14
entry:
%vl = alloca [1 x %struct.__va_list_tag], align 8
%0 = bitcast [1 x %struct.__va_list_tag]* %vl to i8*
call void @llvm.va_start(i8* nonnull %0)
ret void
}
attributes #2 = { nounwind "packed-stack"="true" "use-soft-float"="true" "backchain"}
define void @fun2(i64 %g0, double %d0, i64 %n, ...) #2 {
; CHECK-LABEL: fun2:
; CHECK: stmg %r5, %r15, 64(%r15)
; CHECK-NEXT: lgr %r1, %r15
; CHECK-NEXT: aghi %r15, -168
; CHECK-NEXT: stg %r1, 152(%r15)
; CHECK-NEXT: la %r0, 192(%r15)
; CHECK-NEXT: stg %r0, 184(%r15)
; CHECK-NEXT: la %r0, 328(%r15)
; CHECK-NEXT: stg %r0, 176(%r15)
; CHECK-NEXT: mvghi 168(%r15), 0
; CHECK-NEXT: mvghi 160(%r15), 3
; CHECK-NEXT: lmg %r6, %r15, 240(%r15)
; CHECK-NEXT: br %r14
entry:
%vl = alloca [1 x %struct.__va_list_tag], align 8
%0 = bitcast [1 x %struct.__va_list_tag]* %vl to i8*
call void @llvm.va_start(i8* nonnull %0)
ret void
}
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