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1# RUN: llc -debug-entry-values -run-pass=livedebugvalues -march=x86-64 -o - %s| FileCheck %s
2## Test case:
3## int global;
4## int foo(int p, int q, int r) {
5##   global = p + 1;
6##   asm __volatile("" : : : "edi", "esi", "edx");
7##   return 123;
8## }
9##
10##  Verify that DW_OP_LLVM_entry_values are generated for parameters with multiple
11##  DBG_VALUEs at entry block.
12# CHECK: DBG_VALUE $edi, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
13# CHECK: DBG_VALUE $esi, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
14# CHECK: DBG_VALUE $edx, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
15
16--- |
17  ; ModuleID = 'multiple-param-dbg-value-entry.ll'
18  source_filename = "multiple-param-dbg-value-entry.c"
19  target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
20
21  @global = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
22
23  define dso_local i32 @foo(i32 %p, i32 %q, i32 %r) local_unnamed_addr !dbg !11 {
24  entry:
25    call void @llvm.dbg.value(metadata i32 %p, metadata !15, metadata !DIExpression()), !dbg !18
26    call void @llvm.dbg.value(metadata i32 %q, metadata !16, metadata !DIExpression()), !dbg !18
27    call void @llvm.dbg.value(metadata i32 %r, metadata !17, metadata !DIExpression()), !dbg !18
28    %add = add nsw i32 %p, 1, !dbg !18
29    store i32 %add, i32* @global, align 4, !dbg !18
30    tail call void asm sideeffect "", "~{edi},~{esi},~{edx},~{dirflag},~{fpsr},~{flags}"(), !dbg !18, !srcloc !19
31    ret i32 123, !dbg !18
32  }
33
34  ; Function Attrs: nounwind readnone speculatable
35  declare void @llvm.dbg.value(metadata, metadata, metadata)
36
37  !llvm.dbg.cu = !{!2}
38  !llvm.module.flags = !{!7, !8, !9}
39  !llvm.ident = !{!10}
40
41  !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
42  !1 = distinct !DIGlobalVariable(name: "global", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)
43  !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 9.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
44  !3 = !DIFile(filename: "multiple-param-dbg-value-entry.c", directory: "/")
45  !4 = !{}
46  !5 = !{!0}
47  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
48  !7 = !{i32 2, !"Dwarf Version", i32 4}
49  !8 = !{i32 2, !"Debug Info Version", i32 3}
50  !9 = !{i32 1, !"wchar_size", i32 4}
51  !10 = !{!"clang version 9.0.0 "}
52  !11 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 9, type: !12, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)
53  !12 = !DISubroutineType(types: !13)
54  !13 = !{!6, !6, !6, !6}
55  !14 = !{!15, !16, !17}
56  !15 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !3, line: 9, type: !6)
57  !16 = !DILocalVariable(name: "q", arg: 2, scope: !11, file: !3, line: 9, type: !6)
58  !17 = !DILocalVariable(name: "r", arg: 3, scope: !11, file: !3, line: 9, type: !6)
59  !18 = !DILocation(line: 9, column: 13, scope: !11)
60  !19 = !{i32 213}
61
62...
63---
64name:            foo
65alignment:       16
66tracksRegLiveness: true
67liveins:
68  - { reg: '$edi' }
69body:             |
70  bb.0.entry:
71    liveins: $edi
72
73    DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !18
74    DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !18
75    DBG_VALUE $esi, $noreg, !16, !DIExpression(), debug-location !18
76    DBG_VALUE $edx, $noreg, !17, !DIExpression(), debug-location !18
77    renamable $edi = nsw INC32r killed renamable $edi, implicit-def dead $eflags, debug-location !18
78    MOV32mr $rip, 1, $noreg, @global, $noreg, killed renamable $edi, debug-location !18 :: (store 4 into @global)
79    INLINEASM &"", 1, 12, implicit-def dead early-clobber $edi, 12, implicit-def dead early-clobber $esi, 12, implicit-def dead early-clobber $edx, 12, implicit-def dead early-clobber $df, 12, implicit-def dead early-clobber $fpsw, 12, implicit-def dead early-clobber $eflags, !19, debug-location !18
80    $eax = MOV32ri 123, debug-location !18
81    RETQ killed $eax, debug-location !18
82
83...
84