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84 lines
4.1 KiB
84 lines
4.1 KiB
4 months ago
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# RUN: llc -debug-entry-values -run-pass=livedebugvalues -march=x86-64 -o - %s| FileCheck %s
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## Test case:
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## int global;
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## int foo(int p, int q, int r) {
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## global = p + 1;
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## asm __volatile("" : : : "edi", "esi", "edx");
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## return 123;
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## }
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##
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## Verify that DW_OP_LLVM_entry_values are generated for parameters with multiple
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## DBG_VALUEs at entry block.
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# CHECK: DBG_VALUE $edi, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
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# CHECK: DBG_VALUE $esi, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
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# CHECK: DBG_VALUE $edx, $noreg, !{{.*}}, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location {{.*}}
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--- |
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; ModuleID = 'multiple-param-dbg-value-entry.ll'
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source_filename = "multiple-param-dbg-value-entry.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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@global = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
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define dso_local i32 @foo(i32 %p, i32 %q, i32 %r) local_unnamed_addr !dbg !11 {
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entry:
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call void @llvm.dbg.value(metadata i32 %p, metadata !15, metadata !DIExpression()), !dbg !18
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call void @llvm.dbg.value(metadata i32 %q, metadata !16, metadata !DIExpression()), !dbg !18
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call void @llvm.dbg.value(metadata i32 %r, metadata !17, metadata !DIExpression()), !dbg !18
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%add = add nsw i32 %p, 1, !dbg !18
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store i32 %add, i32* @global, align 4, !dbg !18
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tail call void asm sideeffect "", "~{edi},~{esi},~{edx},~{dirflag},~{fpsr},~{flags}"(), !dbg !18, !srcloc !19
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ret i32 123, !dbg !18
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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)
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "global", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "multiple-param-dbg-value-entry.c", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{!"clang version 9.0.0 "}
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!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)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!6, !6, !6, !6}
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!14 = !{!15, !16, !17}
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!15 = !DILocalVariable(name: "p", arg: 1, scope: !11, file: !3, line: 9, type: !6)
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!16 = !DILocalVariable(name: "q", arg: 2, scope: !11, file: !3, line: 9, type: !6)
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!17 = !DILocalVariable(name: "r", arg: 3, scope: !11, file: !3, line: 9, type: !6)
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!18 = !DILocation(line: 9, column: 13, scope: !11)
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!19 = !{i32 213}
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...
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---
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name: foo
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alignment: 16
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tracksRegLiveness: true
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liveins:
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- { reg: '$edi' }
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body: |
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bb.0.entry:
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liveins: $edi
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DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !18
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DBG_VALUE $edi, $noreg, !15, !DIExpression(), debug-location !18
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DBG_VALUE $esi, $noreg, !16, !DIExpression(), debug-location !18
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DBG_VALUE $edx, $noreg, !17, !DIExpression(), debug-location !18
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renamable $edi = nsw INC32r killed renamable $edi, implicit-def dead $eflags, debug-location !18
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MOV32mr $rip, 1, $noreg, @global, $noreg, killed renamable $edi, debug-location !18 :: (store 4 into @global)
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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 $eflags, !19, debug-location !18
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$eax = MOV32ri 123, debug-location !18
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RETQ killed $eax, debug-location !18
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...
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