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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt -S -passes="print<scalar-evolution>,loop-unroll" -unroll-runtime < %s 2>/dev/null | FileCheck %s3 4; Make sure we use %add.lcssa rather than %load when expanding the5; backedge taken count.6 7define void @test(i1 %c, ptr %p) {8; CHECK-LABEL: define void @test(9; CHECK-SAME: i1 [[C:%.*]], ptr [[P:%.*]]) {10; CHECK-NEXT: [[ENTRY:.*:]]11; CHECK-NEXT: br label %[[LOOP_1_PEEL_BEGIN:.*]]12; CHECK: [[LOOP_1_PEEL_BEGIN]]:13; CHECK-NEXT: br label %[[LOOP_1_PEEL:.*]]14; CHECK: [[LOOP_1_PEEL]]:15; CHECK-NEXT: [[LOAD_PEEL:%.*]] = load i64, ptr [[P]], align 816; CHECK-NEXT: [[ADD_PEEL:%.*]] = add i64 [[LOAD_PEEL]], 117; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[LOOP_1_PEEL_NEXT:.*]]18; CHECK: [[LOOP_1_PEEL_NEXT]]:19; CHECK-NEXT: br label %[[LOOP_1_PEEL_NEXT1:.*]]20; CHECK: [[LOOP_1_PEEL_NEXT1]]:21; CHECK-NEXT: br label %[[ENTRY_PEEL_NEWPH:.*]]22; CHECK: [[ENTRY_PEEL_NEWPH]]:23; CHECK-NEXT: br label %[[LOOP_1:.*]]24; CHECK: [[LOOP_1]]:25; CHECK-NEXT: [[LOAD:%.*]] = load i64, ptr [[P]], align 826; CHECK-NEXT: [[ADD:%.*]] = add i64 [[LOAD]], 127; CHECK-NEXT: br i1 [[C]], label %[[IF_LOOPEXIT:.*]], label %[[LOOP_1]], !llvm.loop [[LOOP0:![0-9]+]]28; CHECK: [[IF_LOOPEXIT]]:29; CHECK-NEXT: [[ADD_LCSSA_PH:%.*]] = phi i64 [ [[ADD]], %[[LOOP_1]] ]30; CHECK-NEXT: br label %[[IF]]31; CHECK: [[IF]]:32; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi i64 [ [[ADD_PEEL]], %[[LOOP_1_PEEL]] ], [ [[ADD_LCSSA_PH]], %[[IF_LOOPEXIT]] ]33; CHECK-NEXT: [[GEP:%.*]] = getelementptr i64, ptr [[P]], i64 [[ADD_LCSSA]]34; CHECK-NEXT: [[TMP0:%.*]] = shl i64 [[ADD_LCSSA]], 335; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[TMP0]], 336; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 137; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP2]], 738; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 039; CHECK-NEXT: br i1 [[LCMP_MOD]], label %[[LOOP_2_PROL_PREHEADER:.*]], label %[[LOOP_2_PROL_LOOPEXIT:.*]]40; CHECK: [[LOOP_2_PROL_PREHEADER]]:41; CHECK-NEXT: br label %[[LOOP_2_PROL:.*]]42; CHECK: [[LOOP_2_PROL]]:43; CHECK-NEXT: [[IV_PROL:%.*]] = phi ptr [ [[P]], %[[LOOP_2_PROL_PREHEADER]] ], [ [[IV_NEXT_PROL:%.*]], %[[LOOP_2_PROL]] ]44; CHECK-NEXT: [[PROL_ITER:%.*]] = phi i64 [ 0, %[[LOOP_2_PROL_PREHEADER]] ], [ [[PROL_ITER_NEXT:%.*]], %[[LOOP_2_PROL]] ]45; CHECK-NEXT: [[IV_NEXT_PROL]] = getelementptr i8, ptr [[IV_PROL]], i64 846; CHECK-NEXT: [[ICMP_PROL:%.*]] = icmp eq ptr [[IV_PROL]], [[GEP]]47; CHECK-NEXT: [[PROL_ITER_NEXT]] = add i64 [[PROL_ITER]], 148; CHECK-NEXT: [[PROL_ITER_CMP:%.*]] = icmp ne i64 [[PROL_ITER_NEXT]], [[XTRAITER]]49; CHECK-NEXT: br i1 [[PROL_ITER_CMP]], label %[[LOOP_2_PROL]], label %[[LOOP_2_PROL_LOOPEXIT_UNR_LCSSA:.*]], !llvm.loop [[LOOP2:![0-9]+]]50; CHECK: [[LOOP_2_PROL_LOOPEXIT_UNR_LCSSA]]:51; CHECK-NEXT: [[IV_UNR_PH:%.*]] = phi ptr [ [[IV_NEXT_PROL]], %[[LOOP_2_PROL]] ]52; CHECK-NEXT: br label %[[LOOP_2_PROL_LOOPEXIT]]53; CHECK: [[LOOP_2_PROL_LOOPEXIT]]:54; CHECK-NEXT: [[IV_UNR:%.*]] = phi ptr [ [[P]], %[[IF]] ], [ [[IV_UNR_PH]], %[[LOOP_2_PROL_LOOPEXIT_UNR_LCSSA]] ]55; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP1]], 756; CHECK-NEXT: br i1 [[TMP3]], label %[[EXIT:.*]], label %[[IF_NEW:.*]]57; CHECK: [[IF_NEW]]:58; CHECK-NEXT: br label %[[LOOP_2:.*]]59; CHECK: [[LOOP_2]]:60; CHECK-NEXT: [[IV:%.*]] = phi ptr [ [[IV_UNR]], %[[IF_NEW]] ], [ [[IV_NEXT_7:%.*]], %[[LOOP_2]] ]61; CHECK-NEXT: [[IV_NEXT:%.*]] = getelementptr i8, ptr [[IV]], i64 862; CHECK-NEXT: [[IV_NEXT_1:%.*]] = getelementptr i8, ptr [[IV_NEXT]], i64 863; CHECK-NEXT: [[IV_NEXT_2:%.*]] = getelementptr i8, ptr [[IV_NEXT_1]], i64 864; CHECK-NEXT: [[IV_NEXT_3:%.*]] = getelementptr i8, ptr [[IV_NEXT_2]], i64 865; CHECK-NEXT: [[IV_NEXT_4:%.*]] = getelementptr i8, ptr [[IV_NEXT_3]], i64 866; CHECK-NEXT: [[IV_NEXT_5:%.*]] = getelementptr i8, ptr [[IV_NEXT_4]], i64 867; CHECK-NEXT: [[IV_NEXT_6:%.*]] = getelementptr i8, ptr [[IV_NEXT_5]], i64 868; CHECK-NEXT: [[IV_NEXT_7]] = getelementptr i8, ptr [[IV_NEXT_6]], i64 869; CHECK-NEXT: [[ICMP_7:%.*]] = icmp eq ptr [[IV_NEXT_6]], [[GEP]]70; CHECK-NEXT: br i1 [[ICMP_7]], label %[[EXIT_UNR_LCSSA:.*]], label %[[LOOP_2]]71; CHECK: [[EXIT_UNR_LCSSA]]:72; CHECK-NEXT: br label %[[EXIT]]73; CHECK: [[EXIT]]:74; CHECK-NEXT: ret void75;76entry:77 br label %loop.178 79loop.1:80 %phi = phi ptr [ null, %entry ], [ %p, %loop.1 ]81 %load = load i64, ptr %p, align 882 %add = add i64 %load, 183 br i1 %c, label %if, label %loop.184 85if:86 %add.lcssa = phi i64 [ %add, %loop.1 ]87 %gep = getelementptr i64, ptr %p, i64 %add.lcssa88 br label %loop.289 90loop.2:91 %iv = phi ptr [ %p, %if ], [ %iv.next, %loop.2 ]92 %iv.next = getelementptr i8, ptr %iv, i64 893 %icmp = icmp eq ptr %iv, %gep94 br i1 %icmp, label %exit, label %loop.295 96exit:97 ret void98}99;.100; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]]}101; CHECK: [[META1]] = !{!"llvm.loop.peeled.count", i32 1}102; CHECK: [[LOOP2]] = distinct !{[[LOOP2]], [[META3:![0-9]+]]}103; CHECK: [[META3]] = !{!"llvm.loop.unroll.disable"}104;.105