1; XFAIL: *
2; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
3
4; GVN should eliminate the fully redundant %9 GEP which
5; allows DEAD to be removed.  This is PR3198.
6
7; The %7 and %4 loads combine to make %DEAD unneeded.
8target 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"
9target triple = "i386-apple-darwin7"
10@H = common global [100 x i32] zeroinitializer, align 32		; <[100 x i32]*> [#uses=3]
11@G = common global i32 0		; <i32*> [#uses=2]
12
13define i32 @test(i32 %i) nounwind {
14entry:
15	%0 = tail call i32 (...) @foo() nounwind		; <i32> [#uses=1]
16	%1 = icmp eq i32 %0, 0		; <i1> [#uses=1]
17	br i1 %1, label %bb1, label %bb
18
19bb:		; preds = %entry
20	%2 = tail call i32 (...) @bar() nounwind		; <i32> [#uses=0]
21	%3 = getelementptr [100 x i32], [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
22	%4 = load i32, i32* %3, align 4		; <i32> [#uses=1]
23	store i32 %4, i32* @G, align 4
24	br label %bb3
25
26bb1:		; preds = %entry
27	%5 = tail call i32 (...) @baz() nounwind		; <i32> [#uses=0]
28	%6 = getelementptr [100 x i32], [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
29	%7 = load i32, i32* %6, align 4		; <i32> [#uses=2]
30	store i32 %7, i32* @G, align 4
31	%8 = icmp eq i32 %7, 0		; <i1> [#uses=1]
32	br i1 %8, label %bb3, label %bb4
33
34bb3:		; preds = %bb1, %bb
35	%9 = getelementptr [100 x i32], [100 x i32]* @H, i32 0, i32 %i		; <i32*> [#uses=1]
36	%DEAD = load i32, i32* %9, align 4		; <i32> [#uses=1]
37; CHECK: %DEAD = phi i32 [ 0, %bb1 ], [ %4, %bb ]
38	ret i32 %DEAD
39
40bb4:		; preds = %bb1
41	ret i32 0
42}
43
44declare i32 @foo(...)
45
46declare i32 @bar(...)
47
48declare i32 @baz(...)
49