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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-mssa(licm,loop-simplifycfg,loop-predication)' -verify-scev < %s | FileCheck %s3 4; Make sure we don't assert due to insufficient SCEV invalidation.5 6define i64 @"main"(ptr addrspace(1) %p, i1 %check) {7; CHECK-LABEL: define i64 @main(8; CHECK-SAME: ptr addrspace(1) [[P:%.*]], i1 [[CHECK:%.*]]) {9; CHECK-NEXT: [[ENTRY:.*:]]10; CHECK-NEXT: switch i32 0, label %[[ENTRY_SPLIT:.*]] [11; CHECK-NEXT: i32 1, label %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT:.*]]12; CHECK-NEXT: ]13; CHECK: [[ENTRY_SPLIT]]:14; CHECK-NEXT: br label %[[LOOP0_PRE:.*]]15; CHECK: [[LOOP0_PRE]]:16; CHECK-NEXT: br i1 [[CHECK]], label %[[EXIT:.*]], label %[[LOOP0:.*]]17; CHECK: [[LOOP0]]:18; CHECK-NEXT: [[LENGTH:%.*]] = load atomic i32, ptr addrspace(1) [[P]] unordered, align 419; CHECK-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[LENGTH]], 120; CHECK-NEXT: br i1 [[TMP0]], label %[[LOOP0_OUT:.*]], label %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1:.*]]21; CHECK: [[LOOP0_OUT]]:22; CHECK-NEXT: br label %[[LOOP0_PRE]]23; CHECK: [[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]]:24; CHECK-NEXT: [[T_LE:%.*]] = add i32 0, 125; CHECK-NEXT: br label %[[LOOP1_PREHEADER:.*]]26; CHECK: [[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]]:27; CHECK-NEXT: [[LENGTH_LCSSA_PH2:%.*]] = phi i32 [ [[LENGTH]], %[[LOOP0]] ]28; CHECK-NEXT: [[LOCAL_PH3:%.*]] = phi i32 [ 0, %[[LOOP0]] ]29; CHECK-NEXT: br label %[[LOOP1_PREHEADER]]30; CHECK: [[LOOP1_PREHEADER]]:31; CHECK-NEXT: [[LENGTH_LCSSA:%.*]] = phi i32 [ poison, %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]] ], [ [[LENGTH_LCSSA_PH2]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]] ]32; CHECK-NEXT: [[LOCAL:%.*]] = phi i32 [ [[T_LE]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT]] ], [ [[LOCAL_PH3]], %[[LOOP1_PREHEADER_SPLIT_LOOP_EXIT1]] ]33; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[LENGTH_LCSSA]], -134; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 310, [[TMP1]]35; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i32 4, [[LENGTH_LCSSA]]36; CHECK-NEXT: [[TMP4:%.*]] = and i1 [[TMP3]], [[TMP2]]37; CHECK-NEXT: [[TMP5:%.*]] = freeze i1 [[TMP4]]38; CHECK-NEXT: br label %[[LOOP1:.*]]39; CHECK: [[LOOP1]]:40; CHECK-NEXT: [[IV1:%.*]] = phi i32 [ 4, %[[LOOP1_PREHEADER]] ], [ [[IV1_NEXT:%.*]], %[[LOOP1_GUARDED:.*]] ]41; CHECK-NEXT: [[TMP6:%.*]] = icmp ult i32 [[IV1]], [[LENGTH_LCSSA]]42; CHECK-NEXT: [[WC:%.*]] = call i1 @llvm.experimental.widenable.condition()43; CHECK-NEXT: [[TMP7:%.*]] = and i1 [[TMP5]], [[WC]]44; CHECK-NEXT: br i1 [[TMP7]], label %[[LOOP1_GUARDED]], label %[[DEOPT_EXIT:.*]]45; CHECK: [[LOOP1_GUARDED]]:46; CHECK-NEXT: call void @llvm.assume(i1 [[TMP6]])47; CHECK-NEXT: [[IV1_NEXT]] = add nuw nsw i32 [[IV1]], 148; CHECK-NEXT: [[CHK:%.*]] = icmp ugt i32 [[IV1]], 31049; CHECK-NEXT: br i1 [[CHK]], label %[[LOOP1_EXIT:.*]], label %[[LOOP1]]50; CHECK: [[DEOPT_EXIT]]:51; CHECK-NEXT: [[TMP8:%.*]] = call i64 (...) @llvm.experimental.deoptimize.i64(i32 13) [ "deopt"() ]52; CHECK-NEXT: ret i64 [[TMP8]]53; CHECK: [[LOOP1_EXIT]]:54; CHECK-NEXT: ret i64 055; CHECK: [[EXIT]]:56; CHECK-NEXT: ret i64 057;58entry:59 br label %loop0.pre60 61loop0.pre:62 br i1 %check, label %exit, label %loop063 64loop0:65 %length = load atomic i32, ptr addrspace(1) %p unordered, align 466 %28 = icmp ugt i32 %length, 167 br i1 %28, label %loop0.out, label %loop1.preheader68 69loop0.out:70 %t = add i32 0, 171 br i1 false, label %loop1.preheader, label %mid72 73loop1.preheader:74 %length.lcssa = phi i32 [ %length, %loop0.out ], [ %length, %loop0 ]75 %local = phi i32 [ 0, %loop0 ], [ %t, %loop0.out ]76 br label %loop177 78loop1:79 %iv1 = phi i32 [ 4, %loop1.preheader ], [ %iv1.next, %loop1.guarded ]80 %82 = icmp ult i32 %iv1, %length.lcssa81 %wc = call i1 @llvm.experimental.widenable.condition()82 %guard.chk = and i1 %82, %wc83 br i1 %guard.chk, label %loop1.guarded, label %deopt-exit84 85loop1.guarded:86 %iv1.next = add nuw nsw i32 %iv1, 187 %chk = icmp ugt i32 %iv1, 31088 br i1 %chk, label %loop1.exit, label %loop189 90deopt-exit:91 %100 = call i64 (...) @llvm.experimental.deoptimize.i64(i32 13) [ "deopt"() ]92 ret i64 %10093 94loop1.exit:95 ret i64 096 97mid:98 br label %loop0.pre99 100exit:101 ret i64 0102}103 104declare i64 @foo()105 106declare i64 @llvm.experimental.deoptimize.i64(...)107 108; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(inaccessiblemem: readwrite)109declare noundef i1 @llvm.experimental.widenable.condition()110