1 ; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 < %s | FileCheck --check-prefix=DBG_VALUE --check-prefix=LOOPVEC_4_1 %s
2 ; RUN: opt -S -loop-vectorize -force-vector-width=2 -force-vector-interleave=3 < %s | FileCheck --check-prefix=DBG_VALUE --check-prefix=LOOPVEC_2_3 %s
3 ; RUN: opt -S -loop-unroll -unroll-count=5 < %s | FileCheck --check-prefix=DBG_VALUE --check-prefix=LOOPUNROLL_5 %s
4 ; RUN: opt -S -loop-vectorize -force-vector-width=4 -force-vector-interleave=4 -loop-unroll -unroll-count=2 < %s | FileCheck --check-prefix=DBG_VALUE --check-prefix=LOOPVEC_UNROLL %s
6 ; Test if vectorization/unroll factor is recorded in discriminator.
8 ; Original source code:
13 ; 5 for (int i = 0; i < 4096; i++)
17 @a = local_unnamed_addr global i32* null, align 8
18 @b = local_unnamed_addr global i32* null, align 8
19 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
21 define void @_Z3foov() local_unnamed_addr #0 !dbg !6 {
22 %1 = load i32*, i32** @b, align 8, !dbg !8, !tbaa !9
23 %2 = load i32*, i32** @a, align 8, !dbg !13, !tbaa !9
26 ; <label>:3: ; preds = %3, %0
27 %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %3 ]
28 %4 = getelementptr inbounds i32, i32* %1, i64 %indvars.iv, !dbg !8
29 %5 = load i32, i32* %4, align 4, !dbg !8, !tbaa !15
30 %6 = getelementptr inbounds i32, i32* %2, i64 %indvars.iv, !dbg !13
31 %7 = load i32, i32* %6, align 4, !dbg !17, !tbaa !15
32 %8 = add nsw i32 %7, %5, !dbg !17
33 ;DBG_VALUE: call void @llvm.dbg.declare{{.*}}!dbg ![[DBG:[0-9]*]]
34 call void @llvm.dbg.declare(metadata i32 %8, metadata !22, metadata !DIExpression()), !dbg !17
35 store i32 %8, i32* %6, align 4, !dbg !17, !tbaa !15
36 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !18
37 %exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !19
38 br i1 %exitcond, label %9, label %3, !dbg !14, !llvm.loop !20
40 ; <label>:9: ; preds = %3
44 ;DBG_VALUE: ![[TOP:[0-9]*]] = distinct !DISubprogram(name: "foo"
45 ;LOOPVEC_4_1: discriminator: 17
46 ;LOOPVEC_2_3: discriminator: 25
47 ;LOOPUNROLL_5: discriminator: 21
48 ; When unrolling after loop vectorize, both vec_body and remainder loop
50 ;LOOPVEC_UNROLL: discriminator: 385
51 ;LOOPVEC_UNROLL: discriminator: 9
52 ;DBG_VALUE: ![[DBG]] = {{.*}}, scope: ![[TOP]]
55 !llvm.module.flags = !{!3, !4}
57 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, debugInfoForProfiling: true)
58 !1 = !DIFile(filename: "a.cc", directory: "/")
59 !3 = !{i32 2, !"Dwarf Version", i32 4}
60 !4 = !{i32 2, !"Debug Info Version", i32 3}
61 !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, unit: !0)
62 !8 = !DILocation(line: 6, column: 13, scope: !6)
63 !9 = !{!10, !10, i64 0}
64 !10 = !{!"any pointer", !11, i64 0}
65 !11 = !{!"omnipotent char", !12, i64 0}
66 !12 = !{!"Simple C++ TBAA"}
67 !13 = !DILocation(line: 6, column: 5, scope: !6)
68 !14 = !DILocation(line: 5, column: 3, scope: !6)
69 !15 = !{!16, !16, i64 0}
70 !16 = !{!"int", !11, i64 0}
71 !17 = !DILocation(line: 6, column: 10, scope: !6)
72 !18 = !DILocation(line: 5, column: 30, scope: !6)
73 !19 = !DILocation(line: 5, column: 21, scope: !6)
74 !20 = distinct !{!20, !14}
75 !21 = !DILocation(line: 7, column: 1, scope: !6)
76 !22 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !1, line: 10)