1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -S -passes=loop-unroll -unroll-runtime < %s | FileCheck %s 3 4declare void @foo() 5 6define void @test(i128 %n, i128 %m) { 7; CHECK-LABEL: define void @test( 8; CHECK-SAME: i128 [[N:%.*]], i128 [[M:%.*]]) { 9; CHECK-NEXT: entry: 10; CHECK-NEXT: [[TMP0:%.*]] = freeze i128 [[N]] 11; CHECK-NEXT: [[TMP1:%.*]] = add i128 [[TMP0]], -1 12; CHECK-NEXT: [[XTRAITER:%.*]] = and i128 [[TMP0]], 7 13; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i128 [[TMP1]], 7 14; CHECK-NEXT: br i1 [[TMP2]], label [[EXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]] 15; CHECK: entry.new: 16; CHECK-NEXT: [[UNROLL_ITER:%.*]] = sub i128 [[TMP0]], [[XTRAITER]] 17; CHECK-NEXT: br label [[LOOP:%.*]] 18; CHECK: loop: 19; CHECK-NEXT: [[IV:%.*]] = phi i128 [ 0, [[ENTRY_NEW]] ], [ [[IV_NEXT_7:%.*]], [[LOOP]] ] 20; CHECK-NEXT: [[NITER:%.*]] = phi i128 [ 0, [[ENTRY_NEW]] ], [ [[NITER_NEXT_7:%.*]], [[LOOP]] ] 21; CHECK-NEXT: call void @foo() 22; CHECK-NEXT: call void @foo() 23; CHECK-NEXT: call void @foo() 24; CHECK-NEXT: call void @foo() 25; CHECK-NEXT: call void @foo() 26; CHECK-NEXT: call void @foo() 27; CHECK-NEXT: call void @foo() 28; CHECK-NEXT: call void @foo() 29; CHECK-NEXT: [[IV_NEXT_7]] = add i128 [[IV]], 8 30; CHECK-NEXT: [[NITER_NEXT_7]] = add i128 [[NITER]], 8 31; CHECK-NEXT: [[NITER_NCMP_7:%.*]] = icmp ne i128 [[NITER_NEXT_7]], [[UNROLL_ITER]] 32; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[LOOP]], label [[EXIT_UNR_LCSSA_LOOPEXIT:%.*]] 33; CHECK: exit.unr-lcssa.loopexit: 34; CHECK-NEXT: [[IV_UNR_PH:%.*]] = phi i128 [ [[IV_NEXT_7]], [[LOOP]] ] 35; CHECK-NEXT: br label [[EXIT_UNR_LCSSA]] 36; CHECK: exit.unr-lcssa: 37; CHECK-NEXT: [[IV_UNR:%.*]] = phi i128 [ 0, [[ENTRY:%.*]] ], [ [[IV_UNR_PH]], [[EXIT_UNR_LCSSA_LOOPEXIT]] ] 38; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i128 [[XTRAITER]], 0 39; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[LOOP_EPIL_PREHEADER:%.*]], label [[EXIT:%.*]] 40; CHECK: loop.epil.preheader: 41; CHECK-NEXT: br label [[LOOP_EPIL:%.*]] 42; CHECK: loop.epil: 43; CHECK-NEXT: [[IV_EPIL:%.*]] = phi i128 [ [[IV_UNR]], [[LOOP_EPIL_PREHEADER]] ], [ [[IV_NEXT_EPIL:%.*]], [[LOOP_EPIL]] ] 44; CHECK-NEXT: [[EPIL_ITER:%.*]] = phi i128 [ 0, [[LOOP_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[LOOP_EPIL]] ] 45; CHECK-NEXT: call void @foo() 46; CHECK-NEXT: [[IV_NEXT_EPIL]] = add i128 [[IV_EPIL]], 1 47; CHECK-NEXT: [[CMP_EPIL:%.*]] = icmp ne i128 [[IV_NEXT_EPIL]], [[N]] 48; CHECK-NEXT: [[EPIL_ITER_NEXT]] = add i128 [[EPIL_ITER]], 1 49; CHECK-NEXT: [[EPIL_ITER_CMP:%.*]] = icmp ne i128 [[EPIL_ITER_NEXT]], [[XTRAITER]] 50; CHECK-NEXT: br i1 [[EPIL_ITER_CMP]], label [[LOOP_EPIL]], label [[EXIT_EPILOG_LCSSA:%.*]], !llvm.loop [[LOOP0:![0-9]+]] 51; CHECK: exit.epilog-lcssa: 52; CHECK-NEXT: br label [[EXIT]] 53; CHECK: exit: 54; CHECK-NEXT: ret void 55; 56entry: 57 br label %loop 58 59loop: 60 %iv = phi i128 [ 0, %entry ], [ %iv.next, %loop ] 61 call void @foo() 62 %iv.next = add i128 %iv, 1 63 %cmp = icmp ne i128 %iv.next, %n 64 br i1 %cmp, label %loop, label %exit 65 66exit: 67 ret void 68} 69;. 70; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]]} 71; CHECK: [[META1]] = !{!"llvm.loop.unroll.disable"} 72;. 73