1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S -passes='print<scalar-evolution>,loop-unroll' -unroll-runtime < %s 2>/dev/null | FileCheck %s 3 4define i32 @f(i1 %cond1) #0 !prof !0 { 5; CHECK-LABEL: define i32 @f 6; CHECK-SAME: (i1 [[COND1:%.*]]) !prof [[PROF0:![0-9]+]] { 7; CHECK-NEXT: entry: 8; CHECK-NEXT: br label [[LOOP1_PEEL_BEGIN:%.*]] 9; CHECK: loop1.peel.begin: 10; CHECK-NEXT: br label [[LOOP1_PEEL:%.*]] 11; CHECK: loop1.peel: 12; CHECK-NEXT: [[LD_PEEL:%.*]] = load i64, ptr null, align 8 13; CHECK-NEXT: br i1 [[COND1]], label [[LOOP1_PEEL_NEXT:%.*]], label [[EXIT1:%.*]], !prof [[PROF1:![0-9]+]] 14; CHECK: loop1.peel.next: 15; CHECK-NEXT: br label [[LOOP1_PEEL_NEXT1:%.*]] 16; CHECK: loop1.peel.next1: 17; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]] 18; CHECK: entry.peel.newph: 19; CHECK-NEXT: br label [[LOOP1:%.*]] 20; CHECK: loop1: 21; CHECK-NEXT: [[LD:%.*]] = load i64, ptr null, align 8 22; CHECK-NEXT: br i1 [[COND1]], label [[LOOP1]], label [[EXIT1_LOOPEXIT:%.*]], !prof [[PROF2:![0-9]+]], !llvm.loop [[LOOP3:![0-9]+]] 23; CHECK: exit1.loopexit: 24; CHECK-NEXT: [[LD_LCSSA_PH:%.*]] = phi i64 [ [[LD]], [[LOOP1]] ] 25; CHECK-NEXT: br label [[EXIT1]] 26; CHECK: exit1: 27; CHECK-NEXT: [[LD_LCSSA:%.*]] = phi i64 [ [[LD_PEEL]], [[LOOP1_PEEL]] ], [ [[LD_LCSSA_PH]], [[EXIT1_LOOPEXIT]] ] 28; CHECK-NEXT: br label [[ENTRY2:%.*]] 29; CHECK: entry2: 30; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[LD_LCSSA]], 1 31; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7 32; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i64 [[LD_LCSSA]], 7 33; CHECK-NEXT: br i1 [[TMP1]], label [[EXIT2_UNR_LCSSA:%.*]], label [[ENTRY2_NEW:%.*]] 34; CHECK: entry2.new: 35; CHECK-NEXT: [[UNROLL_ITER:%.*]] = sub i64 [[TMP0]], [[XTRAITER]] 36; CHECK-NEXT: br label [[LOOP2:%.*]] 37; CHECK: loop2: 38; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ 0, [[ENTRY2_NEW]] ], [ [[INC_7:%.*]], [[LOOP2]] ] 39; CHECK-NEXT: [[NITER:%.*]] = phi i64 [ 0, [[ENTRY2_NEW]] ], [ [[NITER_NEXT_7:%.*]], [[LOOP2]] ] 40; CHECK-NEXT: [[INC_7]] = add i64 [[PHI]], 8 41; CHECK-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8 42; CHECK-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]] 43; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[EXIT2_UNR_LCSSA_LOOPEXIT:%.*]], label [[LOOP2]] 44; CHECK: exit2.unr-lcssa.loopexit: 45; CHECK-NEXT: [[PHI_UNR_PH:%.*]] = phi i64 [ [[INC_7]], [[LOOP2]] ] 46; CHECK-NEXT: br label [[EXIT2_UNR_LCSSA]] 47; CHECK: exit2.unr-lcssa: 48; CHECK-NEXT: [[PHI_UNR:%.*]] = phi i64 [ 0, [[ENTRY2]] ], [ [[PHI_UNR_PH]], [[EXIT2_UNR_LCSSA_LOOPEXIT]] ] 49; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0 50; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[LOOP2_EPIL_PREHEADER:%.*]], label [[EXIT2:%.*]] 51; CHECK: loop2.epil.preheader: 52; CHECK-NEXT: br label [[LOOP2_EPIL:%.*]] 53; CHECK: loop2.epil: 54; CHECK-NEXT: [[PHI_EPIL:%.*]] = phi i64 [ [[PHI_UNR]], [[LOOP2_EPIL_PREHEADER]] ], [ [[INC_EPIL:%.*]], [[LOOP2_EPIL]] ] 55; CHECK-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ 0, [[LOOP2_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[LOOP2_EPIL]] ] 56; CHECK-NEXT: [[INC_EPIL]] = add i64 [[PHI_EPIL]], 1 57; CHECK-NEXT: [[COND2_EPIL:%.*]] = icmp eq i64 [[LD_LCSSA]], [[PHI_EPIL]] 58; CHECK-NEXT: [[EPIL_ITER_NEXT]] = add i64 [[EPIL_ITER]], 1 59; CHECK-NEXT: [[EPIL_ITER_CMP:%.*]] = icmp ne i64 [[EPIL_ITER_NEXT]], [[XTRAITER]] 60; CHECK-NEXT: br i1 [[EPIL_ITER_CMP]], label [[LOOP2_EPIL]], label [[EXIT2_EPILOG_LCSSA:%.*]], !llvm.loop [[LOOP6:![0-9]+]] 61; CHECK: exit2.epilog-lcssa: 62; CHECK-NEXT: br label [[EXIT2]] 63; CHECK: exit2: 64; CHECK-NEXT: ret i32 0 65; 66entry: 67 br label %loop1 68 69loop1: 70 %ld = load i64, ptr null, align 8 71 br i1 %cond1, label %loop1, label %exit1, !prof !1 72 73exit1: 74 br label %entry2 75 76entry2: 77 br label %loop2 78 79loop2: 80 %phi = phi i64 [ 0, %entry2 ], [ %inc, %loop2 ] 81 %inc = add i64 %phi, 1 82 %cond2 = icmp eq i64 %ld, %phi 83 br i1 %cond2, label %exit2, label %loop2 84 85exit2: 86 ret i32 0 87} 88 89!0 = !{!"function_entry_count", i64 1} 90!1 = !{!"branch_weights", i32 123, i32 472} 91