# 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).
# RUN: llc -emit-call-site-info -debug-entry-values -run-pass=livedebugvalues -o - %s | FileCheck %s
# RUN: llc -emit-call-site-info -debug-entry-values -force-instr-ref-livedebugvalues=1 -run-pass=livedebugvalues -o - %s | FileCheck %s
# Verify that the entry values for the input parameters are inserted after the
# bundles which contains the registers' clobbering instructions (the calls to
# @clobber). Previously the insertions would thrash the bundles, later on
# triggering a crash in DebugHandlerBase.
--- |
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"
target triple = "hexagon"
; Function Attrs: nounwind
define i32 @foo(i32 %arg) !dbg !12 {
entry:
call void @llvm.dbg.value(metadata i32 %arg, metadata !16, metadata !DIExpression()), !dbg !17
%call = tail call i32 @clobber(), !dbg !18
ret i32 1, !dbg !19
}
declare !dbg !4 i32 @clobber()
; Function Attrs: nounwind
define i32 @bar(i32 %b) !dbg !20 {
entry:
call void @llvm.dbg.value(metadata i32 %b, metadata !22, metadata !DIExpression()), !dbg !23
%tobool = icmp eq i32 %b, 0, !dbg !24
br i1 %tobool, label %land.end, label %land.rhs, !dbg !24
land.rhs: ; preds = %entry
%call = tail call i32 @clobber(), !dbg !25
br label %land.end
land.end: ; preds = %entry, %land.rhs
ret i32 undef, !dbg !27
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
attributes #0 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9, !10}
!llvm.ident = !{!11}
!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)
!1 = !DIFile(filename: "foo.c", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "clobber", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{!7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 10.0.0"}
!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)
!13 = !DISubroutineType(types: !14)
!14 = !{!7, !7}
!15 = !{!16}
!16 = !DILocalVariable(name: "arg", arg: 1, scope: !12, file: !1, line: 3, type: !7)
!17 = !DILocation(line: 0, scope: !12)
!18 = !DILocation(line: 4, scope: !12)
!19 = !DILocation(line: 5, scope: !12)
!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)
!21 = !{!22}
!22 = !DILocalVariable(name: "arg", arg: 1, scope: !20, file: !1, line: 8, type: !7)
!23 = !DILocation(line: 0, scope: !20)
!24 = !DILocation(line: 9, scope: !20)
!25 = !DILocation(line: 9, scope: !26)
!26 = distinct !DILexicalBlock(scope: !20, file: !1, line: 9)
!27 = !DILocation(line: 10, scope: !20)
...
---
name: foo
tracksRegLiveness: true
body: |
bb.0.entry:
DBG_VALUE $r0, $noreg, !16, !DIExpression(), debug-location !17
CFI_INSTRUCTION def_cfa $r30, 8
CFI_INSTRUCTION offset $r31, -4
CFI_INSTRUCTION offset $r30, -8
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 {
$r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !18 :: (store (s32) into stack)
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
}
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 {
$r0 = A2_tfrsi 1, debug-location !19
$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
}
...
# CHECK-LABEL: name: foo
# CHECK: BUNDLE
# CHECK-NEXT: $r29 = S2_allocframe $r29, 0
# CHECK-NEXT: J2_call @clobber
# CHECK-NEXT: }
# CHECK-NEXT: DBG_VALUE $r0, $noreg, !16, !DIExpression(DW_OP_LLVM_entry_value, 1)
---
name: bar
tracksRegLiveness: true
liveins:
- { reg: '$r0' }
body: |
bb.0.entry:
successors: %bb.1
liveins: $r0
DBG_VALUE $r0, $noreg, !22, !DIExpression(), debug-location !23
BUNDLE implicit-def dead $p0, implicit-def $pc, implicit killed $r0, implicit killed $r31, debug-location !24 {
renamable $p0 = C2_cmpeqi killed renamable $r0, 0, debug-location !24
PS_jmprettnew internal killed $p0, killed $r31, implicit-def $pc, implicit-def $pc, implicit killed undef $r0, debug-location !27
}
bb.1.land.rhs:
CFI_INSTRUCTION def_cfa $r30, 8
CFI_INSTRUCTION offset $r31, -4
CFI_INSTRUCTION offset $r30, -8
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 {
$r29 = S2_allocframe $r29, 0, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !25 :: (store (s32) into stack)
J2_call @clobber, hexagoncsr, implicit-def $pc, implicit-def $r31, implicit internal killed $r29, implicit-def $r29, implicit-def dead $r0, debug-location !25
}
$d15 = L2_deallocframe killed $r30, implicit-def $r29, implicit killed $framekey
PS_jmpret killed $r31, implicit-def $pc, implicit killed undef $r0, debug-location !27
...
# CHECK-LABEL: name: bar
# CHECK: BUNDLE
# CHECK: BUNDLE
# CHECK-NEXT: $r29 = S2_allocframe $r29, 0
# CHECK-NEXT: J2_call @clobber
# CHECK-NEXT: }
# CHECK-NEXT: DBG_VALUE $r0, $noreg, !22, !DIExpression(DW_OP_LLVM_entry_value, 1)
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