forked from OSchip/llvm-project
33 lines
915 B
LLVM
33 lines
915 B
LLVM
; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
|
|
|
|
; CHECK-LABEL: Function: test1
|
|
; CHECK: MayAlias: i32* %X, i32* %tmp
|
|
; CHECK: MayAlias: i32* %tmp, i8** %ap
|
|
; CHECK: NoAlias: i8** %ap, i8** %aq
|
|
; CHECK: MayAlias: i32* %tmp, i8** %aq
|
|
|
|
define i32* @test1(i32* %X, ...) {
|
|
; Initialize variable argument processing
|
|
%ap = alloca i8*
|
|
%ap2 = bitcast i8** %ap to i8*
|
|
call void @llvm.va_start(i8* %ap2)
|
|
|
|
; Read a single pointer argument
|
|
%tmp = va_arg i8** %ap, i32*
|
|
|
|
; Demonstrate usage of llvm.va_copy and llvm.va_end
|
|
%aq = alloca i8*
|
|
%aq2 = bitcast i8** %aq to i8*
|
|
call void @llvm.va_copy(i8* %aq2, i8* %ap2)
|
|
call void @llvm.va_end(i8* %aq2)
|
|
|
|
; Stop processing of arguments.
|
|
call void @llvm.va_end(i8* %ap2)
|
|
ret i32* %tmp
|
|
}
|
|
|
|
declare void @llvm.va_start(i8*)
|
|
declare void @llvm.va_copy(i8*, i8*)
|
|
declare void @llvm.va_end(i8*)
|
|
|