1 ; RUN: llc < %s -march=x86-64 | grep testb 2 3 ; Make sure dagcombine doesn't eliminate the comparison due 4 ; to an off-by-one bug with computeKnownBits information. 5 6 declare void @qux() 7 8 define void @foo(i32 %a) { 9 %t0 = lshr i32 %a, 23 10 br label %next 11 next: 12 %t1 = and i32 %t0, 256 13 %t2 = icmp eq i32 %t1, 0 14 br i1 %t2, label %true, label %false 15 true: 16 call void @qux() 17 ret void 18 false: 19 ret void 20 } 21
