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      1 ; RUN: llc -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s
      2 ; Generated from:
      3 ; void * __attribute__ (( regparm(2) )) f(void *, void *);
      4 ; void * __attribute__ (( regparm(0) )) g(void *, void *);
      5 ;  
      6 ; void *g(void *t, void *k) {
      7 ;   if (k == (void *)0)
      8 ;     return (void *)0;
      9 ;   return f(t, k);
     10 ; }
     11 
     12 ; CHECK: DW_TAG_formal_parameter
     13 ; CHECK-NEXT: DW_AT_location	(DW_OP_fbreg +4)
     14 ; CHECK-NEXT: DW_AT_name	("t")
     15 ; CHECK: DW_TAG_formal_parameter
     16 ; CHECK-NEXT: DW_AT_location	(DW_OP_fbreg +8)
     17 ; CHECK-NEXT: DW_AT_name	("k")
     18 
     19 source_filename = "t.c"
     20 target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
     21 target triple = "i386--linux-gnu"
     22 
     23 ; Function Attrs: nounwind
     24 define i8* @g(i8* %t, i8* %k) local_unnamed_addr #0 !dbg !10 {
     25 entry:
     26   call void @llvm.dbg.value(metadata i8* %t, metadata !14, metadata !DIExpression()), !dbg !16
     27   call void @llvm.dbg.value(metadata i8* %k, metadata !15, metadata !DIExpression()), !dbg !17
     28   %cmp = icmp eq i8* %k, null, !dbg !18
     29   br i1 %cmp, label %return, label %if.end, !dbg !20
     30 
     31 if.end:                                           ; preds = %entry
     32   %call = tail call i8* @f(i8* inreg %t, i8* inreg nonnull %k) #3, !dbg !21
     33   br label %return, !dbg !22
     34 
     35 return:                                           ; preds = %entry, %if.end
     36   %retval.0 = phi i8* [ %call, %if.end ], [ null, %entry ]
     37   ret i8* %retval.0, !dbg !23
     38 }
     39 
     40 declare i8* @f(i8* inreg, i8* inreg) local_unnamed_addr
     41 
     42 ; Function Attrs: nounwind readnone speculatable
     43 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
     44 
     45 attributes #0 = { nounwind  }
     46 attributes #2 = { nounwind readnone speculatable }
     47 attributes #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