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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals2; RUN: opt < %s -S -passes=loop-unroll -unroll-force-peel-count=2 2>&1 | FileCheck %s3; RUN: opt < %s -S -passes=loop-unroll -unroll-force-peel-count=2 -disable-advanced-peeling 2>&1 | FileCheck %s --check-prefix=DISABLEADV4 5declare i32 @get.x()6 7; Test branch weight update for terminator with multiple fallthrough and8; multiple exit edges.9define void @test() {10; CHECK-LABEL: @test(11; CHECK-NEXT: entry:12; CHECK-NEXT: br label [[LOOP_PEEL_BEGIN:%.*]]13; CHECK: loop.peel.begin:14; CHECK-NEXT: br label [[LOOP_PEEL:%.*]]15; CHECK: loop.peel:16; CHECK-NEXT: [[X_PEEL:%.*]] = call i32 @get.x()17; CHECK-NEXT: switch i32 [[X_PEEL]], label [[LOOP_LATCH_PEEL:%.*]] [18; CHECK-NEXT: i32 0, label [[LOOP_LATCH_PEEL]]19; CHECK-NEXT: i32 1, label [[LOOP_EXIT:%.*]]20; CHECK-NEXT: i32 2, label [[LOOP_EXIT]]21; CHECK-NEXT: ], !prof [[PROF0:![0-9]+]]22; CHECK: loop.latch.peel:23; CHECK-NEXT: br label [[LOOP_PEEL_NEXT:%.*]]24; CHECK: loop.peel.next:25; CHECK-NEXT: br label [[LOOP_PEEL2:%.*]]26; CHECK: loop.peel2:27; CHECK-NEXT: [[X_PEEL3:%.*]] = call i32 @get.x()28; CHECK-NEXT: switch i32 [[X_PEEL3]], label [[LOOP_LATCH_PEEL4:%.*]] [29; CHECK-NEXT: i32 0, label [[LOOP_LATCH_PEEL4]]30; CHECK-NEXT: i32 1, label [[LOOP_EXIT]]31; CHECK-NEXT: i32 2, label [[LOOP_EXIT]]32; CHECK-NEXT: ], !prof [[PROF0]]33; CHECK: loop.latch.peel4:34; CHECK-NEXT: br label [[LOOP_PEEL_NEXT1:%.*]]35; CHECK: loop.peel.next1:36; CHECK-NEXT: br label [[LOOP_PEEL_NEXT5:%.*]]37; CHECK: loop.peel.next5:38; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]]39; CHECK: entry.peel.newph:40; CHECK-NEXT: br label [[LOOP:%.*]]41; CHECK: loop:42; CHECK-NEXT: [[X:%.*]] = call i32 @get.x()43; CHECK-NEXT: switch i32 [[X]], label [[LOOP_LATCH:%.*]] [44; CHECK-NEXT: i32 0, label [[LOOP_LATCH]]45; CHECK-NEXT: i32 1, label [[LOOP_EXIT_LOOPEXIT:%.*]]46; CHECK-NEXT: i32 2, label [[LOOP_EXIT_LOOPEXIT]]47; CHECK-NEXT: ], !prof [[PROF0]]48; CHECK: loop.latch:49; CHECK-NEXT: br label [[LOOP]], !llvm.loop [[LOOP1:![0-9]+]]50; CHECK: loop.exit.loopexit:51; CHECK-NEXT: br label [[LOOP_EXIT]]52; CHECK: loop.exit:53; CHECK-NEXT: ret void54;55; DISABLEADV-LABEL: @test(56; DISABLEADV-NEXT: entry:57; DISABLEADV-NEXT: br label [[LOOP:%.*]]58; DISABLEADV: loop:59; DISABLEADV-NEXT: [[X:%.*]] = call i32 @get.x()60; DISABLEADV-NEXT: switch i32 [[X]], label [[LOOP_LATCH:%.*]] [61; DISABLEADV-NEXT: i32 0, label [[LOOP_LATCH]]62; DISABLEADV-NEXT: i32 1, label [[LOOP_EXIT:%.*]]63; DISABLEADV-NEXT: i32 2, label [[LOOP_EXIT]]64; DISABLEADV-NEXT: ], !prof [[PROF0:![0-9]+]]65; DISABLEADV: loop.latch:66; DISABLEADV-NEXT: br label [[LOOP]]67; DISABLEADV: loop.exit:68; DISABLEADV-NEXT: ret void69;70 71 72entry:73 br label %loop74 75loop:76 %x = call i32 @get.x()77 switch i32 %x, label %loop.latch [78 i32 0, label %loop.latch79 i32 1, label %loop.exit80 i32 2, label %loop.exit81 ], !prof !082 83loop.latch:84 br label %loop85 86loop.exit:87 ret void88}89 90!0 = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}91 92;.93; CHECK: [[PROF0]] = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}94; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]]}95; CHECK: [[META2]] = !{!"llvm.loop.peeled.count", i32 2}96; CHECK: [[META3]] = !{!"llvm.loop.unroll.disable"}97;.98; DISABLEADV: [[PROF0]] = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}99;.100