1 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG
2 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG
4 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll' -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG
5 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll' -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG
7 ; This tests that setting the unroll count works
10 ; EPILOG: for.body.preheader:
11 ; EPILOG: br i1 %1, label %for.end.loopexit.unr-lcssa, label %for.body.preheader.new, !dbg [[PH_LOC:![0-9]+]]
13 ; EPILOG: br i1 %niter.ncmp.1, label %for.end.loopexit.unr-lcssa.loopexit, label %for.body, !dbg [[PH_LOC]]
14 ; EPILOG-NOT: br i1 %niter.ncmp.2, label %for.end.loopexit{{.*}}, label %for.body
15 ; EPILOG: for.body.epil.preheader:
16 ; EPILOG: br label %for.body.epil, !dbg [[PH_LOC]]
17 ; EPILOG: for.body.epil:
18 ; EPILOG: br label %for.end.loopexit, !dbg [[EXIT_LOC:![0-9]+]]
19 ; EPILOG: for.end.loopexit:
20 ; EPILOG: br label %for.end, !dbg [[EXIT_LOC]]
22 ; EPILOG-DAG: [[PH_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}})
23 ; EPILOG-DAG: [[EXIT_LOC]] = !DILocation(line: 103, column: 1, scope: !{{.*}})
25 ; PROLOG: for.body.preheader:
26 ; PROLOG: br {{.*}} label %for.body.prol.preheader, label %for.body.prol.loopexit, !dbg [[PH_LOC:![0-9]+]]
27 ; PROLOG: for.body.prol:
28 ; PROLOG: br label %for.body.prol.loopexit, !dbg [[PH_LOC:![0-9]+]]
29 ; PROLOG: for.body.prol.loopexit:
30 ; PROLOG: br {{.*}} label %for.end.loopexit, label %for.body.preheader.new, !dbg [[PH_LOC]]
32 ; PROLOG: br i1 %exitcond.1, label %for.end.loopexit.unr-lcssa, label %for.body, !dbg [[PH_LOC]]
33 ; PROLOG-NOT: br i1 %exitcond.4, label %for.end.loopexit{{.*}}, label %for.body
35 ; PROLOG-DAG: [[PH_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}})
37 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly !dbg !6 {
39 %cmp1 = icmp eq i32 %n, 0, !dbg !7
40 br i1 %cmp1, label %for.end, label %for.body, !dbg !7
42 for.body: ; preds = %for.body, %entry
43 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
44 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ]
45 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv, !dbg !8
46 %0 = load i32, i32* %arrayidx, align 4, !dbg !8
47 %add = add nsw i32 %0, %sum.02, !dbg !8
48 %indvars.iv.next = add i64 %indvars.iv, 1, !dbg !9
49 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9
50 %exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !9
51 br i1 %exitcond, label %for.end, label %for.body, !dbg !9
53 for.end: ; preds = %for.body, %entry
54 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
55 ret i32 %sum.0.lcssa, !dbg !10
58 !llvm.module.flags = !{!0, !1, !2}
60 !0 = !{i32 2, !"Dwarf Version", i32 4}
61 !1 = !{i32 2, !"Debug Info Version", i32 3}
62 !2 = !{i32 1, !"PIC Level", i32 2}
65 !4 = !DISubroutineType(types: !3)
66 !5 = !DIFile(filename: "test.cpp", directory: "/tmp")
67 !6 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 99, type: !4, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !11, retainedNodes: !3)
68 !7 = !DILocation(line: 100, column: 1, scope: !6)
69 !8 = !DILocation(line: 101, column: 1, scope: !6)
70 !9 = !DILocation(line: 102, column: 1, scope: !6)
71 !10 = !DILocation(line: 103, column: 1, scope: !6)
72 !11 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
74 isOptimized: true, flags: "-O2",
75 splitDebugFilename: "abc.debug", emissionKind: 2)