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1; RUN: llc -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s2; Generated from:3; ptr __attribute__ (( regparm(2) )) f(ptr, ptr);4; ptr __attribute__ (( regparm(0) )) g(ptr, ptr);5; 6; ptr g(ptr t, ptr k) {7; if (k == (ptr)0)8; return (ptr)0;9; return f(t, k);10; }11 12; CHECK: DW_TAG_formal_parameter13; CHECK-NEXT: DW_AT_location (DW_OP_fbreg +4)14; CHECK-NEXT: DW_AT_name ("t")15; CHECK: DW_TAG_formal_parameter16; CHECK-NEXT: DW_AT_location (DW_OP_fbreg +8)17; CHECK-NEXT: DW_AT_name ("k")18 19source_filename = "t.c"20target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"21target triple = "i386--linux-gnu"22 23; Function Attrs: nounwind24define ptr @g(ptr %t, ptr %k) local_unnamed_addr #0 !dbg !10 {25entry:26 call void @llvm.dbg.value(metadata ptr %t, metadata !14, metadata !DIExpression()), !dbg !1627 call void @llvm.dbg.value(metadata ptr %k, metadata !15, metadata !DIExpression()), !dbg !1728 %cmp = icmp eq ptr %k, null, !dbg !1829 br i1 %cmp, label %return, label %if.end, !dbg !2030 31if.end: ; preds = %entry32 %call = tail call ptr @f(ptr inreg %t, ptr inreg nonnull %k) #3, !dbg !2133 br label %return, !dbg !2234 35return: ; preds = %entry, %if.end36 %retval.0 = phi ptr [ %call, %if.end ], [ null, %entry ]37 ret ptr %retval.0, !dbg !2338}39 40declare ptr @f(ptr inreg, ptr inreg) local_unnamed_addr41 42; Function Attrs: nounwind readnone speculatable43declare void @llvm.dbg.value(metadata, metadata, metadata) #244 45attributes #0 = { nounwind }46attributes #2 = { nounwind readnone speculatable }47attributes #3 = { nounwind }48 49!llvm.dbg.cu = !{!0}50!llvm.module.flags = !{!5, !6, !7, !8}51!llvm.ident = !{!9}52 53!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (llvm/trunk 319230)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)54!1 = !DIFile(filename: "t.c", directory: "/")55!2 = !{}56!3 = !{!4}57!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 32)58!5 = !{i32 1, !"NumRegisterParameters", i32 0}59!6 = !{i32 2, !"Dwarf Version", i32 4}60!7 = !{i32 2, !"Debug Info Version", i32 3}61!8 = !{i32 1, !"wchar_size", i32 4}62!9 = !{!"clang version 6.0.0 (llvm/trunk 319230)"}63!10 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)64!11 = !DISubroutineType(types: !12)65!12 = !{!4, !4, !4}66!13 = !{!14, !15}67!14 = !DILocalVariable(name: "t", arg: 1, scope: !10, file: !1, line: 4, type: !4)68!15 = !DILocalVariable(name: "k", arg: 2, scope: !10, file: !1, line: 4, type: !4)69!16 = !DILocation(line: 4, column: 15, scope: !10)70!17 = !DILocation(line: 4, column: 24, scope: !10)71!18 = !DILocation(line: 5, column: 9, scope: !19)72!19 = distinct !DILexicalBlock(scope: !10, file: !1, line: 5, column: 7)73!20 = !DILocation(line: 5, column: 7, scope: !10)74!21 = !DILocation(line: 7, column: 10, scope: !10)75!22 = !DILocation(line: 7, column: 3, scope: !10)76!23 = !DILocation(line: 8, column: 1, scope: !10)77