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1; RUN: opt -S -passes=jump-threading < %s | FileCheck %s2 3declare ptr @escape()4declare void @llvm.assume(i1)5 6define i1 @test1(i1 %cond) {7entry:8 br i1 %cond, label %taken, label %not_taken9 10; CHECK-LABEL: @test111; CHECK: br i1 %cond, label %no, label %yes12; CHECK: ret i1 true13 14taken:15 %res1 = call ptr @escape()16 %a = icmp eq ptr %res1, null17 tail call void @llvm.assume(i1 %a)18 br label %done19not_taken:20 %res2 = call ptr @escape()21 %b = icmp ne ptr %res2, null22 tail call void @llvm.assume(i1 %b)23 br label %done24 25; An assume that can be used to simplify this comparison dominates each26; predecessor branch (although no assume dominates the cmp itself). Make sure27; this still can be simplified.28 29done:30 %res = phi ptr [ %res1, %taken ], [ %res2, %not_taken ]31 %cnd = icmp ne ptr %res, null32 br i1 %cnd, label %yes, label %no33 34yes:35 ret i1 true36no:37 ret i1 false38}39 40