1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -loop-simplifycfg -verify-scev < %s | FileCheck %s 3; RUN: opt -S -loop-simplifycfg -verify-scev -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s 4 5; Verify that the scev information is still valid. Verification should not fail 6 7define void @t_run_test() { 8; CHECK-LABEL: @t_run_test( 9; CHECK-NEXT: entry: 10; CHECK-NEXT: br label %[[LOOP_PH:.*]] 11; CHECK: [[LOOP_PH]]: 12; CHECK-NEXT: br label %[[LOOP_BODY:.*]] 13; CHECK: [[LOOP_BODY]]: 14; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, %[[LOOP_PH]] ], [ [[INC:%.*]], %[[LOOP_BODY]] ] 15; CHECK-NEXT: [[INC]] = add i32 [[IV]], 1 16; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], 10 17; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP_BODY]], label %[[EXIT:.*]] 18; CHECK: [[EXIT]]: 19; CHECK-NEXT: br label %[[LOOP_BODY2:.*]] 20; CHECK: [[LOOP_BODY2]]: 21; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, %[[EXIT]] ], [ [[INC2:%.*]], %[[LOOP_BODY2]] ] 22; CHECK-NEXT: [[INC2]] = add i32 [[IV2]], 1 23; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[INC2]], 10 24; CHECK-NEXT: br i1 [[CMP2]], label %[[LOOP_BODY2]], label %[[EXIT2:.*]] 25; CHECK: [[EXIT2]]: 26; CHECK-NEXT: ret void 27; 28entry: 29 br label %loop.ph 30 31loop.ph: 32 br label %loop.header 33 34loop.header: 35 %iv = phi i32 [0, %loop.ph], [%inc, %loop.body] 36 br label %loop.body1 37 38loop.body1: 39 br label %loop.body 40 41loop.body: 42 %inc = add i32 %iv, 1 43 %cmp = icmp ult i32 %inc, 10 44 br i1 %cmp, label %loop.header, label %exit 45 46exit: 47 br label %loop.body2 48 49loop.body2: 50 %iv2 = phi i32 [0, %exit], [%inc2, %loop.body2] 51 %inc2 = add i32 %iv2, 1 52 %cmp2 = icmp ult i32 %inc2, 10 53 br i1 %cmp2, label %loop.body2, label %exit2 54 55exit2: 56 ret void 57} 58 59