1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt -S -loop-simplifycfg -verify-scev < %s | FileCheck %s 3 4 ; Verify that the scev information is still valid. Verification should not fail 5 6 define void @t_run_test() { 7 ; CHECK-LABEL: @t_run_test( 8 ; CHECK-NEXT: entry: 9 ; CHECK-NEXT: br label %[[LOOP_PH:.*]] 10 ; CHECK: [[LOOP_PH]]: 11 ; CHECK-NEXT: br label %[[LOOP_BODY:.*]] 12 ; CHECK: [[LOOP_BODY]]: 13 ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, %[[LOOP_PH]] ], [ [[INC:%.*]], %[[LOOP_BODY]] ] 14 ; CHECK-NEXT: [[INC]] = add i32 [[IV]], 1 15 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], 10 16 ; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP_BODY]], label %[[EXIT:.*]] 17 ; CHECK: [[EXIT]]: 18 ; CHECK-NEXT: br label %[[LOOP_BODY2:.*]] 19 ; CHECK: [[LOOP_BODY2]]: 20 ; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, %[[EXIT]] ], [ [[INC2:%.*]], %[[LOOP_BODY2]] ] 21 ; CHECK-NEXT: [[INC2]] = add i32 [[IV2]], 1 22 ; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[INC2]], 10 23 ; CHECK-NEXT: br i1 [[CMP2]], label %[[LOOP_BODY2]], label %[[EXIT2:.*]] 24 ; CHECK: [[EXIT2]]: 25 ; CHECK-NEXT: ret void 26 ; 27 entry: 28 br label %loop.ph 29 30 loop.ph: 31 br label %loop.header 32 33 loop.header: 34 %iv = phi i32 [0, %loop.ph], [%inc, %loop.body] 35 br label %loop.body1 36 37 loop.body1: 38 br label %loop.body 39 40 loop.body: 41 %inc = add i32 %iv, 1 42 %cmp = icmp ult i32 %inc, 10 43 br i1 %cmp, label %loop.header, label %exit 44 45 exit: 46 br label %loop.body2 47 48 loop.body2: 49 %iv2 = phi i32 [0, %exit], [%inc2, %loop.body2] 50 %inc2 = add i32 %iv2, 1 51 %cmp2 = icmp ult i32 %inc2, 10 52 br i1 %cmp2, label %loop.body2, label %exit2 53 54 exit2: 55 ret void 56 } 57 58
