| ; THis testcase caused an assertion failure because a PHI node did not have |
| ; entries for it's postdominator. But I think this can only happen when the |
| ; PHI node is dead, so we just avoid patching up dead PHI nodes. |
| |
| ; RUN: opt < %s -adce -S | FileCheck %s |
| ; RUN: opt < %s -adce -adce-remove-loops -S | FileCheck %s |
| |
| target datalayout = "e-p:32:32" |
| |
| define void @dead_test8() { |
| entry: |
| br label %loopentry |
| |
| loopentry: ; preds = %endif, %entry |
| %k.1 = phi i32 [ %k.0, %endif ], [ 0, %entry ] ; <i32> [#uses=1] |
| br i1 false, label %no_exit, label %return |
| |
| no_exit: ; preds = %loopentry |
| ; CHECK: br label %then |
| br i1 false, label %then, label %else |
| |
| then: ; preds = %no_exit |
| br label %endif |
| |
| else: ; preds = %no_exit |
| %dec = add i32 %k.1, -1 ; <i32> [#uses=1] |
| br label %endif |
| |
| endif: ; preds = %else, %then |
| %k.0 = phi i32 [ %dec, %else ], [ 0, %then ] ; <i32> [#uses=1] |
| store i32 2, i32* null |
| br label %loopentry |
| |
| return: ; preds = %loopentry |
| ret void |
| } |
| |
