1; RUN: opt -gvn -S < %s | FileCheck %s
2
3; Check that an unreachable predecessor to a PHI node doesn't cause a crash.
4; PR21625.
5
6define i32 @f(i32** %f) {
7; CHECK: bb0:
8; Load should be removed, since it's ignored.
9; CHECK-NEXT: br label
10bb0:
11  %bar = load i32*, i32** %f
12  br label %bb2
13bb1:
14  %zed = load i32*, i32** %f
15  br i1 false, label %bb1, label %bb2
16bb2:
17  %foo = phi i32* [ null, %bb0 ], [ %zed, %bb1 ]
18  %storemerge = load i32, i32* %foo
19  ret i32 %storemerge
20}
21