1 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=2 | FileCheck %s 2 3 ; This tests that setting the unroll count works 4 5 ; CHECK: for.body.preheader: 6 ; CHECK: br {{.*}} label %for.body.prol, label %for.body.preheader.split, !dbg [[PH_LOC:![0-9]+]] 7 ; CHECK: for.body.prol: 8 ; CHECK: br label %for.body.preheader.split, !dbg [[BODY_LOC:![0-9]+]] 9 ; CHECK: for.body.preheader.split: 10 ; CHECK: br {{.*}} label %for.end.loopexit, label %for.body.preheader.split.split, !dbg [[PH_LOC]] 11 ; CHECK: for.body: 12 ; CHECK: br i1 %exitcond.1, label %for.end.loopexit.unr-lcssa, label %for.body, !dbg [[BODY_LOC]] 13 ; CHECK-NOT: br i1 %exitcond.4, label %for.end.loopexit{{.*}}, label %for.body 14 15 ; CHECK-DAG: [[PH_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}}) 16 ; CHECK-DAG: [[BODY_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}}) 17 18 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly !dbg !6 { 19 entry: 20 %cmp1 = icmp eq i32 %n, 0, !dbg !7 21 br i1 %cmp1, label %for.end, label %for.body, !dbg !7 22 23 for.body: ; preds = %for.body, %entry 24 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 25 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 26 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv, !dbg !8 27 %0 = load i32, i32* %arrayidx, align 4, !dbg !8 28 %add = add nsw i32 %0, %sum.02, !dbg !8 29 %indvars.iv.next = add i64 %indvars.iv, 1, !dbg !9 30 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9 31 %exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !9 32 br i1 %exitcond, label %for.end, label %for.body, !dbg !9 33 34 for.end: ; preds = %for.body, %entry 35 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 36 ret i32 %sum.0.lcssa, !dbg !10 37 } 38 39 !llvm.module.flags = !{!0, !1, !2} 40 !0 = !{i32 2, !"Dwarf Version", i32 4} 41 !1 = !{i32 2, !"Debug Info Version", i32 3} 42 !2 = !{i32 1, !"PIC Level", i32 2} 43 44 !3 = !{} 45 !4 = !DISubroutineType(types: !3) 46 !5 = !DIFile(filename: "test.cpp", directory: "/tmp") 47 !6 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 99, type: !4, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, variables: !3) 48 !7 = !DILocation(line: 100, column: 1, scope: !6) 49 !8 = !DILocation(line: 101, column: 1, scope: !6) 50 !9 = !DILocation(line: 102, column: 1, scope: !6) 51 !10 = !DILocation(line: 103, column: 1, scope: !6) 52
