diff --git a/test/Regression/Transforms/ADCE/2003-04-25-PHIPostDominateProblem.ll b/test/Regression/Transforms/ADCE/2003-04-25-PHIPostDominateProblem.ll new file mode 100644 index 00000000000..994a63e7b31 --- /dev/null +++ b/test/Regression/Transforms/ADCE/2003-04-25-PHIPostDominateProblem.ll @@ -0,0 +1,37 @@ +; 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: as < %s | opt -adce + +target endian = little +target pointersize = 32 + +implementation ; Functions: + +void %dead_test8() { +entry: ; No predecessors! + br label %loopentry + +loopentry: ; preds = %entry, %endif + %k.1 = phi int [ %k.0, %endif ], [ 0, %entry ] ; [#uses=1] + br bool false, label %no_exit, label %return + +no_exit: ; preds = %loopentry + br bool false, label %then, label %else + +then: ; preds = %no_exit + br label %endif + +else: ; preds = %no_exit + %dec = add int %k.1, -1 ; [#uses=1] + br label %endif + +endif: ; preds = %else, %then + %k.0 = phi int [ %dec, %else ], [ 0, %then ] ; [#uses=1] + store int 2, int* null + br label %loopentry + +return: ; preds = %loopentry + ret void +}