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1; RUN: llc -emit-call-site-info %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s2 3;; Compiled from source:4;; extern int fn1 (long int x, long int y, long int z);5;; __attribute__((noinline)) long int6;; fn2 (long int a, long int b, long int c)7;; {8;; long int q = 2 * a;9;; return fn1 (5, 6, 7);10;; }11;; int main(void) {12;; return fn2(14, 23, 34);13;; }14;; Using command:15;; clang -g -O2 m.c -emit-llvm -S -c -o m.ll16 17;; Verify that call site info is not created for parameters marked as "undef".18; CHECK: DW_TAG_GNU_call_site19; CHECK: DW_AT_abstract_origin ({{.*}} "fn2")20; CHECK-NOT: DW_TAG_GNU_call_site_parameter21 22; ModuleID = 'm.c'23source_filename = "m.c"24target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"25target triple = "x86_64-unknown-linux-gnu"26 27; Function Attrs: noinline nounwind uwtable28define dso_local i64 @fn2(i64 %a, i64 %b, i64 %c) local_unnamed_addr !dbg !7 {29entry:30 call void @llvm.dbg.value(metadata i64 undef, metadata !12, metadata !DIExpression()), !dbg !1631 call void @llvm.dbg.value(metadata i64 undef, metadata !13, metadata !DIExpression()), !dbg !1632 call void @llvm.dbg.value(metadata i64 undef, metadata !14, metadata !DIExpression()), !dbg !1633 call void @llvm.dbg.value(metadata i64 undef, metadata !15, metadata !DIExpression()), !dbg !1634 %call = tail call i32 @fn1(i64 5, i64 6, i64 7) #4, !dbg !1635 %conv = sext i32 %call to i64, !dbg !1636 ret i64 %conv, !dbg !1637}38 39declare !dbg !19 dso_local i32 @fn1(i64, i64, i64) local_unnamed_addr40 41; Function Attrs: nounwind uwtable42define dso_local i32 @main() local_unnamed_addr !dbg !23 {43entry:44 %call = tail call i64 @fn2(i64 undef, i64 undef, i64 undef), !dbg !2645 %conv = trunc i64 %call to i32, !dbg !2646 ret i32 %conv, !dbg !2647}48 49; Function Attrs: nounwind readnone speculatable willreturn50declare void @llvm.dbg.value(metadata, metadata, metadata)51 52!llvm.dbg.cu = !{!0}53!llvm.module.flags = !{!3, !4, !5}54!llvm.ident = !{!6}55 56!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)57!1 = !DIFile(filename: "m.c", directory: "/dir")58!2 = !{}59!3 = !{i32 7, !"Dwarf Version", i32 4}60!4 = !{i32 2, !"Debug Info Version", i32 3}61!5 = !{i32 1, !"wchar_size", i32 4}62!6 = !{!"clang version 12.0.0"}63!7 = distinct !DISubprogram(name: "fn2", scope: !1, file: !1, line: 4, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)64!8 = !DISubroutineType(types: !9)65!9 = !{!10, !10, !10, !10}66!10 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)67!11 = !{!12, !13, !14, !15}68!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 4, type: !10)69!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 4, type: !10)70!14 = !DILocalVariable(name: "c", arg: 3, scope: !7, file: !1, line: 4, type: !10)71!15 = !DILocalVariable(name: "q", scope: !7, file: !1, line: 6, type: !10)72!16 = !DILocation(line: 0, scope: !7)73!19 = !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !20, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)74!20 = !DISubroutineType(types: !21)75!21 = !{!22, !10, !10, !10}76!22 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)77!23 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 9, type: !24, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)78!24 = !DISubroutineType(types: !25)79!25 = !{!22}80!26 = !DILocation(line: 10, column: 16, scope: !23)81