| ; RUN: opt -newgvn -S < %s | FileCheck %s | |
| ; Check that an unreachable predecessor to a PHI node doesn't cause a crash. | |
| ; PR21625. | |
| define i32 @f(i32** %f) { | |
| ; CHECK: bb0: | |
| ; Load should be removed, since it's ignored. | |
| ; CHECK-NEXT: br label | |
| bb0: | |
| %bar = load i32*, i32** %f | |
| br label %bb2 | |
| bb1: | |
| %zed = load i32*, i32** %f | |
| br i1 false, label %bb1, label %bb2 | |
| bb2: | |
| %foo = phi i32* [ null, %bb0 ], [ %zed, %bb1 ] | |
| %storemerge = load i32, i32* %foo | |
| ret i32 %storemerge | |
| } |