blob: 2098c905ce9235ee1e87f2c386a663d44b8bab96 [file] [log] [blame]
; 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
}