mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
298a3683d0
old vaarg instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22256 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
|
|
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
|
|
; RUN: diff %t1.ll %t2.ll
|
|
|
|
; Demonstrate all of the variable argument handling intrinsic functions plus
|
|
; the va_arg instruction.
|
|
|
|
implementation ; Functions:
|
|
declare void %llvm.va_start(sbyte**)
|
|
declare void %llvm.va_copy(sbyte**, sbyte*)
|
|
declare void %llvm.va_end(sbyte**)
|
|
|
|
int %test(int %X, ...) {
|
|
; Allocate two va_list items. On this target, va_list is of type sbyte*
|
|
%ap = alloca sbyte* ; <sbyte**> [#uses=4]
|
|
%aq = alloca sbyte* ; <sbyte**> [#uses=2]
|
|
|
|
; Initialize variable argument processing
|
|
call void %llvm.va_start(sbyte** %ap)
|
|
|
|
; Read a single integer argument
|
|
%tmp = va_arg sbyte** %ap, int ; <int> [#uses=1]
|
|
|
|
; Demonstrate usage of llvm.va_copy and llvm_va_end
|
|
%apv = load sbyte** %ap ; <sbyte*> [#uses=1]
|
|
call void %llvm.va_copy(sbyte** %aq, sbyte* %apv)
|
|
call void %llvm.va_end(sbyte** %aq)
|
|
|
|
; Stop processing of arguments.
|
|
call void %llvm.va_end(sbyte** %ap)
|
|
ret int %tmp
|
|
|
|
}
|