1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 2; RUN: llc < %s -mtriple=riscv64 | FileCheck %s 3 4; The sub nuw produces poison if the input is not 0 or 1. We must insert a 5; freeze before converting the sub to AND so that we don't propagate poison. 6define i64 @foo(i64 %1) { 7; CHECK-LABEL: foo: 8; CHECK: # %bb.0: # %entry 9; CHECK-NEXT: li a1, 1 10; CHECK-NEXT: sub a1, a1, a0 11; CHECK-NEXT: sltiu a0, a0, 2 12; CHECK-NEXT: xori a1, a1, 1 13; CHECK-NEXT: neg a0, a0 14; CHECK-NEXT: and a0, a0, a1 15; CHECK-NEXT: ret 16entry: 17 %.urem.i = sub nuw i64 1, %1 18 %.cmp.i = icmp ugt i64 %1, 1 19 %2 = xor i64 %.urem.i, 1 20 %3 = select i1 %.cmp.i, i64 0, i64 %2 21 ret i64 %3 22} 23