1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
; This testcase contains a entire loop that should be removed. The only thing
; left is the store instruction in BB0. The problem this testcase was running
; into was that when the reg109 PHI was getting zero predecessors, it was
; removed even though there were uses still around. Now the uses are filled
; in with a dummy value before the PHI is deleted.
;
; RUN: llvm-as < %s | opt -adce
%node_t = type { double*, %node_t*, %node_t**, double**, double*, i32, i32 }
define void @localize_local(%node_t* %nodelist) {
bb0:
%nodelist.upgrd.1 = alloca %node_t* ; <%node_t**> [#uses=2]
store %node_t* %nodelist, %node_t** %nodelist.upgrd.1
br label %bb1
bb1: ; preds = %bb0
%reg107 = load %node_t** %nodelist.upgrd.1 ; <%node_t*> [#uses=2]
%cond211 = icmp eq %node_t* %reg107, null ; <i1> [#uses=1]
br i1 %cond211, label %bb3, label %bb2
bb2: ; preds = %bb2, %bb1
%reg109 = phi %node_t* [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <%node_t*> [#uses=1]
%reg212 = getelementptr %node_t* %reg109, i64 0, i32 1 ; <%node_t**> [#uses=1]
%reg110 = load %node_t** %reg212 ; <%node_t*> [#uses=2]
%cond213 = icmp ne %node_t* %reg110, null ; <i1> [#uses=1]
br i1 %cond213, label %bb2, label %bb3
bb3: ; preds = %bb2, %bb1
ret void
}
|
