1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=m68k-linux -verify-machineinstrs | FileCheck %s
%struct.va_list = type { ptr }
define i32 @test(i32 %X, ...) {
; Initialize variable argument processing
; CHECK-LABEL: test:
; CHECK: .cfi_startproc
; CHECK-NEXT: ; %bb.0:
; CHECK-NEXT: suba.l #8, %sp
; CHECK-NEXT: .cfi_def_cfa_offset -12
; CHECK-NEXT: lea (16,%sp), %a0
; CHECK-NEXT: move.l %a0, %d0
; CHECK-NEXT: add.l #4, %d0
; CHECK-NEXT: move.l %d0, (4,%sp)
; CHECK-NEXT: move.l %d0, (0,%sp)
; CHECK-NEXT: move.l (16,%sp), %d0
; CHECK-NEXT: adda.l #8, %sp
; CHECK-NEXT: rts
%ap = alloca %struct.va_list
%ap2 = bitcast ptr %ap to ptr
call void @llvm.va_start(ptr %ap2)
; Read a single integer argument
%tmp = va_arg ptr %ap2, i32
; Demonstrate usage of llvm.va_copy and llvm.va_end
%aq = alloca ptr
%aq2 = bitcast ptr %aq to ptr
call void @llvm.va_copy(ptr %aq2, ptr %ap2)
call void @llvm.va_end(ptr %aq2)
; Stop processing of arguments.
call void @llvm.va_end(ptr %ap2)
ret i32 %tmp
}
declare void @llvm.va_start(ptr)
declare void @llvm.va_copy(ptr, ptr)
declare void @llvm.va_end(ptr)
|
