38 lines · plain
1; THis testcase caused an assertion failure because a PHI node did not have 2; entries for it's postdominator. But I think this can only happen when the 3; PHI node is dead, so we just avoid patching up dead PHI nodes.4 5; RUN: opt < %s -passes=adce -S | FileCheck %s6; RUN: opt < %s -passes=adce -adce-remove-loops -S | FileCheck %s7 8target datalayout = "e-p:32:32"9 10define void @dead_test8() {11entry:12 br label %loopentry13 14loopentry: ; preds = %endif, %entry15 %k.1 = phi i32 [ %k.0, %endif ], [ 0, %entry ] ; <i32> [#uses=1]16 br i1 false, label %no_exit, label %return17 18no_exit: ; preds = %loopentry19; CHECK: br label %then20 br i1 false, label %then, label %else21 22then: ; preds = %no_exit23 br label %endif24 25else: ; preds = %no_exit26 %dec = add i32 %k.1, -1 ; <i32> [#uses=1]27 br label %endif28 29endif: ; preds = %else, %then30 %k.0 = phi i32 [ %dec, %else ], [ 0, %then ] ; <i32> [#uses=1]31 store i32 2, ptr null32 br label %loopentry33 34return: ; preds = %loopentry35 ret void36}37 38