1; Test to make sure unused llvm.invariant.start calls are not trivially eliminated
2; RUN: opt < %s -instcombine -S | FileCheck %s
3
4declare void @g(i8*)
5
6declare {}* @llvm.invariant.start(i64, i8* nocapture) nounwind readonly
7
8define i8 @f() {
9  %a = alloca i8                                  ; <i8*> [#uses=4]
10  store i8 0, i8* %a
11  %i = call {}* @llvm.invariant.start(i64 1, i8* %a) ; <{}*> [#uses=0]
12  ; CHECK: call {}* @llvm.invariant.start
13  call void @g(i8* %a)
14  %r = load i8, i8* %a                                ; <i8> [#uses=1]
15  ret i8 %r
16}
17