77 lines
3.4 KiB
LLVM
77 lines
3.4 KiB
LLVM
; 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
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; 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
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; RUN: opt -S -loop-unroll -unroll-count=5 < %s | FileCheck --check-prefix=DBG_VALUE --check-prefix=LOOPUNROLL_5 %s
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; 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
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; Test if vectorization/unroll factor is recorded in discriminator.
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;
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; Original source code:
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; 1 int *a;
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; 2 int *b;
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; 3
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; 4 void foo() {
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; 5 for (int i = 0; i < 4096; i++)
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; 6 a[i] += b[i];
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; 7 }
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@a = local_unnamed_addr global i32* null, align 8
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@b = local_unnamed_addr global i32* null, align 8
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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define void @_Z3foov() local_unnamed_addr #0 !dbg !6 {
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%1 = load i32*, i32** @b, align 8, !dbg !8, !tbaa !9
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%2 = load i32*, i32** @a, align 8, !dbg !13, !tbaa !9
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br label %3, !dbg !14
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; <label>:3: ; preds = %3, %0
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%indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %3 ]
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%4 = getelementptr inbounds i32, i32* %1, i64 %indvars.iv, !dbg !8
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%5 = load i32, i32* %4, align 4, !dbg !8, !tbaa !15
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%6 = getelementptr inbounds i32, i32* %2, i64 %indvars.iv, !dbg !13
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%7 = load i32, i32* %6, align 4, !dbg !17, !tbaa !15
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%8 = add nsw i32 %7, %5, !dbg !17
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;DBG_VALUE: call void @llvm.dbg.declare{{.*}}!dbg ![[DBG:[0-9]*]]
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call void @llvm.dbg.declare(metadata i32 %8, metadata !22, metadata !DIExpression()), !dbg !17
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store i32 %8, i32* %6, align 4, !dbg !17, !tbaa !15
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !18
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%exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !19
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br i1 %exitcond, label %9, label %3, !dbg !14, !llvm.loop !20
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; <label>:9: ; preds = %3
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ret void, !dbg !21
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}
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;DBG_VALUE: ![[TOP:[0-9]*]] = distinct !DISubprogram(name: "foo"
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;LOOPVEC_4_1: discriminator: 17
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;LOOPVEC_2_3: discriminator: 25
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;LOOPUNROLL_5: discriminator: 21
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; When unrolling after loop vectorize, both vec_body and remainder loop
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; are unrolled.
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;LOOPVEC_UNROLL: discriminator: 9
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;LOOPVEC_UNROLL: discriminator: 385
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;DBG_VALUE: ![[DBG]] = {{.*}}, scope: ![[TOP]]
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, debugInfoForProfiling: true)
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!1 = !DIFile(filename: "a.cc", directory: "/")
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, unit: !0)
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!8 = !DILocation(line: 6, column: 13, scope: !6)
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!9 = !{!10, !10, i64 0}
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!10 = !{!"any pointer", !11, i64 0}
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!11 = !{!"omnipotent char", !12, i64 0}
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!12 = !{!"Simple C++ TBAA"}
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!13 = !DILocation(line: 6, column: 5, scope: !6)
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!14 = !DILocation(line: 5, column: 3, scope: !6)
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!15 = !{!16, !16, i64 0}
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!16 = !{!"int", !11, i64 0}
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!17 = !DILocation(line: 6, column: 10, scope: !6)
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!18 = !DILocation(line: 5, column: 30, scope: !6)
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!19 = !DILocation(line: 5, column: 21, scope: !6)
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!20 = distinct !{!20, !14}
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!21 = !DILocation(line: 7, column: 1, scope: !6)
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!22 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !1, line: 10)
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