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llvm-project/llvm/test/Transforms/LoopUnroll/runtime-epilog-debuginfo.ll
Simon Tatham 760df47b77 [ARM] Replace fp-only-sp and d16 with fp64 and d32. 
Those two subtarget features were awkward because their semantics are
reversed: each one indicates the _lack_ of support for something in
the architecture, rather than the presence. As a consequence, you
don't get the behavior you want if you combine two sets of feature
bits.

Each SubtargetFeature for an FP architecture version now comes in four
versions, one for each combination of those options. So you can still
say (for example) '+vfp2' in a feature string and it will mean what
it's always meant, but there's a new string '+vfp2d16sp' meaning the
version without those extra options.

A lot of this change is just mechanically replacing positive checks
for the old features with negative checks for the new ones. But one
more interesting change is that I've rearranged getFPUFeatures() so
that the main FPU feature is appended to the output list *before*
rather than after the features derived from the Restriction field, so
that -fp64 and -d32 can override defaults added by the main feature.

Reviewers: dmgreen, samparker, SjoerdMeijer

Subscribers: srhines, javed.absar, eraman, kristof.beyls, hiraditya, zzheng, Petar.Avramovic, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D60691

llvm-svn: 361845
2019-05-28 16:13:20 +00:00

129 lines
8.1 KiB
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; RUN: opt -loop-unroll -unroll-runtime -unroll-runtime-epilog -S %s | FileCheck %s
; Test that epilogue is tagged with the same debug information as original loop body rather than original loop exit.
; CHECK: for.body.i:
; CHECK: br i1 {{.*}}, label %lee1.exit.loopexit.unr-lcssa.loopexit, label %for.body.i, !dbg ![[LOOP_LOC:[0-9]+]]
; CHECK: lee1.exit.loopexit.unr-lcssa.loopexit:
; CHECK: br label %lee1.exit.loopexit.unr-lcssa, !dbg ![[LOOP_LOC]]
; CHECK: lee1.exit.loopexit.unr-lcssa:
; CHECK: %lcmp.mod = icmp ne i32 %xtraiter, 0, !dbg ![[LOOP_LOC]]
; CHECK: br i1 %lcmp.mod, label %for.body.i.epil.preheader, label %lee1.exit.loopexit, !dbg ![[LOOP_LOC]]
; CHECK: for.body.i.epil.preheader:
; CHECK: br label %for.body.i.epil, !dbg ![[LOOP_LOC]]
; CHECK: lee1.exit.loopexit:
; CHECK: br label %lee1.exit, !dbg ![[EXIT_LOC:[0-9]+]]
; CHECK-DAG: ![[LOOP_LOC]] = !DILocation(line: 5, column: 3, scope: !{{.*}}, inlinedAt: !{{.*}})
; CHECK-DAG: ![[EXIT_LOC]] = !DILocation(line: 11, column: 12, scope: !{{.*}}, inlinedAt: !{{.*}})
; Function Attrs: nounwind readnone
define i32 @goo(i32 %a, i32 %b) local_unnamed_addr #0 !dbg !8 {
entry:
tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !13, metadata !15), !dbg !16
tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !14, metadata !15), !dbg !17
tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !18, metadata !15), !dbg !26
tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !21, metadata !15), !dbg !28
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !22, metadata !15), !dbg !29
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !23, metadata !15), !dbg !30
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !23, metadata !15), !dbg !30
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !22, metadata !15), !dbg !29
%cmp7.i = icmp eq i32 %b, 0, !dbg !31
br i1 %cmp7.i, label %lee1.exit, label %for.body.i.preheader, !dbg !33
for.body.i.preheader: ; preds = %entry
br label %for.body.i, !dbg !34
for.body.i: ; preds = %for.body.i.preheader, %for.body.i
%i.09.i = phi i32 [ %inc.i, %for.body.i ], [ 0, %for.body.i.preheader ]
%t.08.i = phi i32 [ %add1.i, %for.body.i ], [ 0, %for.body.i.preheader ]
%div.i = sdiv i32 %t.08.i, 2, !dbg !34
%add.i = add i32 %t.08.i, %a, !dbg !35
%add1.i = add i32 %add.i, %div.i, !dbg !36
tail call void @llvm.dbg.value(metadata i32 %add1.i, i64 0, metadata !22, metadata !15), !dbg !29
%inc.i = add nuw i32 %i.09.i, 1, !dbg !37
tail call void @llvm.dbg.value(metadata i32 %inc.i, i64 0, metadata !23, metadata !15), !dbg !30
tail call void @llvm.dbg.value(metadata i32 %inc.i, i64 0, metadata !23, metadata !15), !dbg !30
tail call void @llvm.dbg.value(metadata i32 %add1.i, i64 0, metadata !22, metadata !15), !dbg !29
%exitcond.i = icmp eq i32 %inc.i, %b, !dbg !31
br i1 %exitcond.i, label %lee1.exit.loopexit, label %for.body.i, !dbg !33, !llvm.loop !38
lee1.exit.loopexit: ; preds = %for.body.i
%add1.i.lcssa = phi i32 [ %add1.i, %for.body.i ]
br label %lee1.exit, !dbg !41
lee1.exit: ; preds = %lee1.exit.loopexit, %entry
%t.0.lcssa.i = phi i32 [ 0, %entry ], [ %add1.i.lcssa, %lee1.exit.loopexit ]
tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !44, metadata !15), !dbg !47
tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !45, metadata !15), !dbg !48
%add.i4 = add nsw i32 %b, %a, !dbg !41
%sub.i = sub nsw i32 %a, %b, !dbg !49
%mul.i = mul nsw i32 %add.i4, %sub.i, !dbg !50
%add = add nsw i32 %t.0.lcssa.i, %mul.i, !dbg !51
ret i32 %add, !dbg !52
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="arm7tdmi" "target-features"="+neon,+strict-align,+vfp3,-crypto,-fp-armv8,-fp16,-vfp4" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "Snapdragon LLVM ARM Compiler 4.0.5 (based on llvm.org 4.0+)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "t.c", directory: "/prj/llvm-arm/scratch1/zhaoshiz/bugs/debug-symbol")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 1, !"min_enum_size", i32 4}
!7 = !{!"Snapdragon LLVM ARM Compiler 4.0.5 (based on llvm.org 4.0+)"}
!8 = distinct !DISubprogram(name: "goo", scope: !1, file: !1, line: 23, type: !9, isLocal: false, isDefinition: true, scopeLine: 23, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
!9 = !DISubroutineType(types: !10)
!10 = !{!11, !11, !11}
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!12 = !{!13, !14}
!13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 23, type: !11)
!14 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 23, type: !11)
!15 = !DIExpression()
!16 = !DILocation(line: 23, column: 14, scope: !8)
!17 = !DILocation(line: 23, column: 21, scope: !8)
!18 = !DILocalVariable(name: "a", arg: 1, scope: !19, file: !1, line: 3, type: !11)
!19 = distinct !DISubprogram(name: "lee1", scope: !1, file: !1, line: 3, type: !9, isLocal: true, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !20)
!20 = !{!18, !21, !22, !23}
!21 = !DILocalVariable(name: "b", arg: 2, scope: !19, file: !1, line: 3, type: !11)
!22 = !DILocalVariable(name: "t", scope: !19, file: !1, line: 4, type: !11)
!23 = !DILocalVariable(name: "i", scope: !24, file: !1, line: 5, type: !25)
!24 = distinct !DILexicalBlock(scope: !19, file: !1, line: 5, column: 3)
!25 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
!26 = !DILocation(line: 3, column: 22, scope: !19, inlinedAt: !27)
!27 = distinct !DILocation(line: 24, column: 27, scope: !8)
!28 = !DILocation(line: 3, column: 29, scope: !19, inlinedAt: !27)
!29 = !DILocation(line: 4, column: 7, scope: !19, inlinedAt: !27)
!30 = !DILocation(line: 5, column: 17, scope: !24, inlinedAt: !27)
!31 = !DILocation(line: 5, column: 23, scope: !32, inlinedAt: !27)
!32 = distinct !DILexicalBlock(scope: !24, file: !1, line: 5, column: 3)
!33 = !DILocation(line: 5, column: 3, scope: !24, inlinedAt: !27)
!34 = !DILocation(line: 6, column: 13, scope: !32, inlinedAt: !27)
!35 = !DILocation(line: 6, column: 11, scope: !32, inlinedAt: !27)
!36 = !DILocation(line: 6, column: 7, scope: !32, inlinedAt: !27)
!37 = !DILocation(line: 5, column: 28, scope: !32, inlinedAt: !27)
!38 = distinct !{!38, !39, !40}
!39 = !DILocation(line: 5, column: 3, scope: !24)
!40 = !DILocation(line: 6, column: 14, scope: !24)
!41 = !DILocation(line: 11, column: 12, scope: !42, inlinedAt: !46)
!42 = distinct !DISubprogram(name: "lee2", scope: !1, file: !1, line: 10, type: !9, isLocal: true, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !43)
!43 = !{!44, !45}
!44 = !DILocalVariable(name: "a", arg: 1, scope: !42, file: !1, line: 10, type: !11)
!45 = !DILocalVariable(name: "b", arg: 2, scope: !42, file: !1, line: 10, type: !11)
!46 = distinct !DILocation(line: 24, column: 40, scope: !8)
!47 = !DILocation(line: 10, column: 22, scope: !42, inlinedAt: !46)
!48 = !DILocation(line: 10, column: 29, scope: !42, inlinedAt: !46)
!49 = !DILocation(line: 11, column: 20, scope: !42, inlinedAt: !46)
!50 = !DILocation(line: 11, column: 16, scope: !42, inlinedAt: !46)
!51 = !DILocation(line: 24, column: 38, scope: !8)
!52 = !DILocation(line: 24, column: 3, scope: !8)
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