1 ; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 2 3 ; CHECK-LABEL: Function: test1 4 ; CHECK: MayAlias: i32* %X, i32* %tmp 5 ; CHECK: MayAlias: i32* %tmp, i8** %ap 6 ; CHECK: NoAlias: i8** %ap, i8** %aq 7 ; CHECK: MayAlias: i32* %tmp, i8** %aq 8 9 define i32* @test1(i32* %X, ...) { 10 ; Initialize variable argument processing 11 %ap = alloca i8* 12 %ap2 = bitcast i8** %ap to i8* 13 call void @llvm.va_start(i8* %ap2) 14 15 ; Read a single pointer argument 16 %tmp = va_arg i8** %ap, i32* 17 18 ; Demonstrate usage of llvm.va_copy and llvm.va_end 19 %aq = alloca i8* 20 %aq2 = bitcast i8** %aq to i8* 21 call void @llvm.va_copy(i8* %aq2, i8* %ap2) 22 call void @llvm.va_end(i8* %aq2) 23 24 ; Stop processing of arguments. 25 call void @llvm.va_end(i8* %ap2) 26 ret i32* %tmp 27 } 28 29 declare void @llvm.va_start(i8*) 30 declare void @llvm.va_copy(i8*, i8*) 31 declare void @llvm.va_end(i8*) 32 33
