1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt < %s --passes=canon-freeze -S | FileCheck %s 3 4define void @check_duplicate_removal(i32 %n) { 5; CHECK-LABEL: define void @check_duplicate_removal( 6; CHECK-SAME: i32 [[N:%.*]]) { 7; CHECK-NEXT: entry: 8; CHECK-NEXT: [[N_FROZEN:%.*]] = freeze i32 [[N]] 9; CHECK-NEXT: br label [[LOOP:%.*]] 10; CHECK: loop: 11; CHECK-NEXT: [[T1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[T3:%.*]], [[LOOP]] ] 12; CHECK-NEXT: [[T2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[T3]], [[LOOP]] ] 13; CHECK-NEXT: [[T3]] = add i32 [[N_FROZEN]], [[T2]] 14; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[T2]], 0 15; CHECK-NEXT: br i1 [[COND]], label [[LOOP]], label [[EXIT:%.*]] 16; CHECK: exit: 17; CHECK-NEXT: ret void 18; 19entry: 20 br label %loop 21 22loop: 23 %t1 = phi i32 [ 0, %entry], [%t3, %loop ] 24 %t2 = phi i32 [ 0, %entry], [%t3, %loop ] 25 %t3 = add i32 %n, %t2 26 %.fr = freeze i32 %t3 27 %cond = icmp eq i32 %t2, 0 28 br i1 %cond, label %loop, label %exit 29 30exit: 31 ret void 32} 33