1# Test cutoffs for livedebugvalues debug range extension.
2# Disable LDV if the input-bb-limit AND the input-dbg-value-limit are both exceeded.
3
4# RUN: llc %s -o - -run-pass=livedebugvalues -mtriple=x86_64-unknown-unknown \
5# RUN:   -livedebugvalues-input-bb-limit=1 \
6# RUN:   -livedebugvalues-input-dbg-value-limit=1 \
7# RUN:   | FileCheck %s -check-prefix=LDV-DISABLED
8
9# RUN: llc %s -o - -run-pass=livedebugvalues -mtriple=x86_64-unknown-unknown \
10# RUN:   -livedebugvalues-input-bb-limit=1 \
11# RUN:   -livedebugvalues-input-dbg-value-limit=10 \
12# RUN:   | FileCheck %s -check-prefix=LDV-ENABLED
13
14# RUN: llc %s -o - -run-pass=livedebugvalues -mtriple=x86_64-unknown-unknown \
15# RUN:   -livedebugvalues-input-bb-limit=10 \
16# RUN:   -livedebugvalues-input-dbg-value-limit=1 \
17# RUN:   | FileCheck %s -check-prefix=LDV-ENABLED
18
19# RUN: llc %s -o - -run-pass=livedebugvalues -mtriple=x86_64-unknown-unknown \
20# RUN:   -livedebugvalues-input-bb-limit=10 \
21# RUN:   -livedebugvalues-input-dbg-value-limit=10 \
22# RUN:   | FileCheck %s -check-prefix=LDV-ENABLED
23
24# LDV-DISABLED-LABEL: bb.1.exit
25# LDV-DISABLED-NEXT: $edi = MOV32rm
26
27# LDV-ENABLED-LABEL: bb.1.exit
28# LDV-ENABLED-NEXT: DBG_VALUE $rsp, 0, {{.*}}, !DIExpression(DW_OP_plus_uconst, 4)
29# LDV-ENABLED-NEXT: $edi = MOV32rm
30
31--- |
32  target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
33
34  declare i32 @use(i32)
35
36  define i32 @foo(i32 %x) !dbg !6 {
37  entry:
38    %y = add i32 %x, %x, !dbg !12
39    call void @llvm.dbg.value(metadata i32 %y, metadata !9, metadata !DIExpression()), !dbg !12
40    br label %exit, !dbg !13
41
42  exit:                                             ; preds = %entry
43    %z = call i32 @use(i32 %y), !dbg !14
44    call void @llvm.dbg.value(metadata i32 %z, metadata !11, metadata !DIExpression()), !dbg !14
45    ret i32 %z, !dbg !15
46  }
47
48  declare void @llvm.dbg.value(metadata, metadata, metadata)
49
50  !llvm.dbg.cu = !{!0}
51  !llvm.debugify = !{!3, !4}
52  !llvm.module.flags = !{!5}
53
54  !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
55  !1 = !DIFile(filename: "/tmp/t.ll", directory: "/")
56  !2 = !{}
57  !3 = !{i32 4}
58  !4 = !{i32 2}
59  !5 = !{i32 2, !"Debug Info Version", i32 3}
60  !6 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !7, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
61  !7 = !DISubroutineType(types: !2)
62  !8 = !{!9, !11}
63  !9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
64  !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
65  !11 = !DILocalVariable(name: "2", scope: !6, file: !1, line: 3, type: !10)
66  !12 = !DILocation(line: 1, column: 1, scope: !6)
67  !13 = !DILocation(line: 2, column: 1, scope: !6)
68  !14 = !DILocation(line: 3, column: 1, scope: !6)
69  !15 = !DILocation(line: 4, column: 1, scope: !6)
70
71...
72---
73name:            foo
74liveins:
75  - { reg: '$edi', virtual-reg: '' }
76stack:
77  - { id: 0, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4,
78      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
79      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
80body:             |
81  bb.0.entry:
82    successors: %bb.1(0x80000000)
83    liveins: $edi
84
85    frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
86    CFI_INSTRUCTION def_cfa_offset 16
87    renamable $edi = ADD32rr renamable $edi, killed renamable $edi, implicit-def $eflags, debug-location !12
88    DBG_VALUE renamable $edi, $noreg, !9, !DIExpression(), debug-location !12
89    MOV32mr $rsp, 1, $noreg, 4, $noreg, killed $edi :: (store (s32) into %stack.0)
90    DBG_VALUE $rsp, 0, !9, !DIExpression(DW_OP_plus_uconst, 4), debug-location !12
91
92  bb.1.exit:
93    $edi = MOV32rm $rsp, 1, $noreg, 4, $noreg :: (load (s32) from %stack.0)
94    CALL64pcrel32 @use, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $eax, debug-location !14
95    DBG_VALUE renamable $eax, $noreg, !11, !DIExpression(), debug-location !14
96    $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15
97    RETQ implicit killed $eax, debug-location !15
98
99...
100