1; RUN: opt < %s -basicaa -gvn -S | grep "DEAD = phi i32 "
2
3; GVN should eliminate the fully redundant %9 GEP which
4; allows DEAD to be removed.  This is PR3198.
5
6; The %7 and %4 loads combine to make %DEAD unneeded.
7target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
8target triple = "i386-apple-darwin7"
9@H = common global [100 x i32] zeroinitializer, align 32		; <[100 x i32]*> [#uses=3]
10@G = common global i32 0		; <i32*> [#uses=2]
11
12define i32 @test(i32 %i) nounwind {
13entry:
14	%0 = tail call i32 (...)* @foo() nounwind		; <i32> [#uses=1]
15	%1 = icmp eq i32 %0, 0		; <i1> [#uses=1]
16	br i1 %1, label %bb1, label %bb
17
18bb:		; preds = %entry
19	%2 = tail call i32 (...)* @bar() nounwind		; <i32> [#uses=0]
20	%3 = getelementptr [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
21	%4 = load i32* %3, align 4		; <i32> [#uses=1]
22	store i32 %4, i32* @G, align 4
23	br label %bb3
24
25bb1:		; preds = %entry
26	%5 = tail call i32 (...)* @baz() nounwind		; <i32> [#uses=0]
27	%6 = getelementptr [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
28	%7 = load i32* %6, align 4		; <i32> [#uses=2]
29	store i32 %7, i32* @G, align 4
30	%8 = icmp eq i32 %7, 0		; <i1> [#uses=1]
31	br i1 %8, label %bb3, label %bb4
32
33bb3:		; preds = %bb1, %bb
34	%9 = getelementptr [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
35	%DEAD = load i32* %9, align 4		; <i32> [#uses=1]
36	ret i32 %DEAD
37
38bb4:		; preds = %bb1
39	ret i32 0
40}
41
42declare i32 @foo(...)
43
44declare i32 @bar(...)
45
46declare i32 @baz(...)
47