1; RUN: opt < %s -jump-threading -simplifycfg -S | grep {ret i32 1}
2; rdar://6402033
3
4; Test that we can thread through the block with the partially redundant load (%2).
5target 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"
6target triple = "i386-apple-darwin7"
7
8define i32 @foo(i32* %P) nounwind {
9entry:
10	%0 = tail call i32 (...)* @f1() nounwind		; <i32> [#uses=1]
11	%1 = icmp eq i32 %0, 0		; <i1> [#uses=1]
12	br i1 %1, label %bb1, label %bb
13
14bb:		; preds = %entry
15	store i32 42, i32* %P, align 4
16	br label %bb1
17
18bb1:		; preds = %entry, %bb
19	%res.0 = phi i32 [ 1, %bb ], [ 0, %entry ]		; <i32> [#uses=2]
20	%2 = load i32* %P, align 4		; <i32> [#uses=1]
21	%3 = icmp sgt i32 %2, 36		; <i1> [#uses=1]
22	br i1 %3, label %bb3, label %bb2
23
24bb2:		; preds = %bb1
25	%4 = tail call i32 (...)* @f2() nounwind		; <i32> [#uses=0]
26	ret i32 %res.0
27
28bb3:		; preds = %bb1
29	ret i32 %res.0
30}
31
32declare i32 @f1(...)
33
34declare i32 @f2(...)
35