1; RUN: opt < %s -instcombine -instcombine-infinite-loop-threshold=3 -S | FileCheck %s
2
3%struct.__va_list = type { i8*, i8*, i8*, i32, i32 }
4
5declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
6declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
7declare void @llvm.va_start(i8*)
8declare void @llvm.va_end(i8*)
9declare void @llvm.va_copy(i8*, i8*)
10
11define i32 @func(i8* nocapture readnone %fmt, ...) {
12; CHECK-LABEL: @func(
13; CHECK: entry:
14; CHECK-NEXT: ret i32 0
15entry:
16  %va0 = alloca %struct.__va_list, align 8
17  %va1 = alloca %struct.__va_list, align 8
18  %0 = bitcast %struct.__va_list* %va0 to i8*
19  %1 = bitcast %struct.__va_list* %va1 to i8*
20  call void @llvm.lifetime.start.p0i8(i64 32, i8* %0)
21  call void @llvm.va_start(i8* %0)
22  call void @llvm.lifetime.start.p0i8(i64 32, i8* %1)
23  call void @llvm.va_copy(i8* %1, i8* %0)
24  call void @llvm.va_end(i8* %1)
25  call void @llvm.lifetime.end.p0i8(i64 32, i8* %1)
26  call void @llvm.va_end(i8* %0)
27  call void @llvm.lifetime.end.p0i8(i64 32, i8* %0)
28  ret i32 0
29}
30
31