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