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142 lines
6.7 KiB
142 lines
6.7 KiB
4 months ago
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# We do not support the call site info for the target now, so we use the experimental option (-emit-call-site-info -debug-entry-values).
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# RUN: llc -emit-call-site-info -debug-entry-values -run-pass=livedebugvalues -o - %s | FileCheck %s
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# Verify that the entry values for the input parameters are inserted after the
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# bundles which contains the registers' clobbering instructions (the calls to
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# @clobber). Previously the insertions would thrash the bundles, later on
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# triggering a crash in DebugHandlerBase.
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--- |
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target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
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target triple = "hexagon"
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; Function Attrs: nounwind
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define i32 @foo(i32 %arg) !dbg !12 {
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entry:
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call void @llvm.dbg.value(metadata i32 %arg, metadata !16, metadata !DIExpression()), !dbg !17
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%call = tail call i32 @clobber(), !dbg !18
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ret i32 1, !dbg !19
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}
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declare !dbg !4 i32 @clobber()
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; Function Attrs: nounwind
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define i32 @bar(i32 %b) !dbg !20 {
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entry:
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call void @llvm.dbg.value(metadata i32 %b, metadata !22, metadata !DIExpression()), !dbg !23
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%tobool = icmp eq i32 %b, 0, !dbg !24
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br i1 %tobool, label %land.end, label %land.rhs, !dbg !24
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land.rhs: ; preds = %entry
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%call = tail call i32 @clobber(), !dbg !25
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br label %land.end
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land.end: ; preds = %entry, %land.rhs
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ret i32 undef, !dbg !27
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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attributes #0 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9, !10}
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!llvm.ident = !{!11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
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!1 = !DIFile(filename: "foo.c", directory: "/")
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!2 = !{}
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!3 = !{!4}
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!4 = !DISubprogram(name: "clobber", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{i32 1, !"wchar_size", i32 4}
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!11 = !{!"clang version 10.0.0"}
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!12 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!7, !7}
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!15 = !{!16}
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!16 = !DILocalVariable(name: "arg", arg: 1, scope: !12, file: !1, line: 3, type: !7)
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!17 = !DILocation(line: 0, scope: !12)
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!18 = !DILocation(line: 4, scope: !12)
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!19 = !DILocation(line: 5, scope: !12)
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!20 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 8, type: !13, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !21)
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!21 = !{!22}
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!22 = !DILocalVariable(name: "arg", arg: 1, scope: !20, file: !1, line: 8, type: !7)
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!23 = !DILocation(line: 0, scope: !20)
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!24 = !DILocation(line: 9, scope: !20)
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!25 = !DILocation(line: 9, scope: !26)
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!26 = distinct !DILexicalBlock(scope: !20, file: !1, line: 9)
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!27 = !DILocation(line: 10, scope: !20)
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...
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---
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name: foo
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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DBG_VALUE $r0, $noreg, !16, !DIExpression(), debug-location !17
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CFI_INSTRUCTION def_cfa $r30, 8
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CFI_INSTRUCTION offset $r31, -4
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CFI_INSTRUCTION offset $r30, -8
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BUNDLE implicit-def $r29, implicit-def $r30, implicit-def dead $pc, implicit-def dead $r31, implicit-def dead $r0, implicit $r29, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !18 {
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$r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !18 :: (store 4 into stack)
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J2_call @clobber, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit internal killed $r29, implicit-def $r29, implicit-def dead $r0, debug-location !18
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}
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BUNDLE implicit-def dead $r0, implicit-def $d15, implicit-def $r30, implicit-def $r31, implicit-def $pc, implicit-def $r29, implicit killed $r30, implicit killed $framekey, debug-location !19 {
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$r0 = A2_tfrsi 1, debug-location !19
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$d15 = L4_return killed $r30, implicit-def $pc, implicit-def $r29, implicit killed $framekey, implicit-def dead $pc, implicit internal killed $r0, debug-location !19
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}
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...
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# CHECK-LABEL: name: foo
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# CHECK: BUNDLE
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# CHECK-NEXT: $r29 = S2_allocframe $r29, 0
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# CHECK-NEXT: J2_call @clobber
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# CHECK-NEXT: }
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# CHECK-NEXT: DBG_VALUE $r0, $noreg, !16, !DIExpression(DW_OP_LLVM_entry_value, 1)
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---
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name: bar
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tracksRegLiveness: true
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liveins:
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- { reg: '$r0' }
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body: |
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bb.0.entry:
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successors: %bb.1
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liveins: $r0
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DBG_VALUE $r0, $noreg, !22, !DIExpression(), debug-location !23
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DBG_VALUE $r0, $noreg, !22, !DIExpression(), debug-location !23
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BUNDLE implicit-def dead $p0, implicit-def $pc, implicit killed $r0, implicit killed $r31, debug-location !24 {
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renamable $p0 = C2_cmpeqi killed renamable $r0, 0, debug-location !24
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PS_jmprettnew internal killed $p0, killed $r31, implicit-def $pc, implicit-def $pc, implicit killed undef $r0, debug-location !27
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}
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bb.1.land.rhs:
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CFI_INSTRUCTION def_cfa $r30, 8
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CFI_INSTRUCTION offset $r31, -4
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CFI_INSTRUCTION offset $r30, -8
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BUNDLE implicit-def $r29, implicit-def $r30, implicit-def $pc, implicit-def $r31, implicit-def dead $r0, implicit $r29, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !25 {
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$r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !25 :: (store 4 into stack)
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J2_call @clobber, hexagoncsr, implicit-def $pc, implicit-def $r31, implicit internal killed $r29, implicit-def $r29, implicit-def dead $r0, debug-location !25
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}
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$d15 = L2_deallocframe killed $r30, implicit-def $r29, implicit killed $framekey
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PS_jmpret killed $r31, implicit-def $pc, implicit killed undef $r0, debug-location !27
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...
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# CHECK-LABEL: name: bar
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# CHECK: BUNDLE
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# CHECK: BUNDLE
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# CHECK-NEXT: $r29 = S2_allocframe $r29, 0
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# CHECK-NEXT: J2_call @clobber
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# CHECK-NEXT: }
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# CHECK-NEXT: DBG_VALUE $r0, $noreg, !22, !DIExpression(DW_OP_LLVM_entry_value, 1)
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