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; RUN: llc %s -stop-after=livedebugvars -o %t
; RUN: cat %t | FileCheck %s
;
; Test that we can emit debug info for large values that are split
; up across multiple registers by the SelectionDAG type legalizer.
;
; // Compile with -O1 -m32.
; long long foo (long long a, long long b)
; {
; long long res = b+1;
; if ( a == b )
; return res;
; return 0;
; }
;
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; CHECK-DAG: DBG_VALUE debug-use %{{[a-z]+}}, debug-use _, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !{{[0-9]+}}
; CHECK-DAG: DBG_VALUE debug-use %{{[a-z]+}}, debug-use _, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !{{[0-9]+}}
2017-08-18 20:07:00 +02:00
; ModuleID = 'sdagsplit-1.c'
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386"
; Function Attrs: nounwind readnone
define i64 @foo ( i64 %a , i64 %b ) local_unnamed_addr #0 !dbg !8 {
entry:
tail call void @llvm.dbg.value ( metadata i64 %a , metadata !13 , metadata !16 ) , !dbg !17
tail call void @llvm.dbg.value ( metadata i64 %b , metadata !14 , metadata !16 ) , !dbg !18
tail call void @llvm.dbg.value ( metadata i64 %add , metadata !15 , metadata !16 ) , !dbg !19
%cmp = icmp eq i64 %a , %b , !dbg !20
%add = add nsw i64 %b , 1 , !dbg !22
%retval.0 = select i1 %cmp , i64 %add , i64 0 , !dbg !23
ret i64 %retval.0 , !dbg !24
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value ( metadata , metadata , metadata ) #1
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind readnone s p e c u l a t a b l e }
!llvm.dbg.cu = ! { !0 }
!llvm.module.flags = ! { !3 , !4 , !5 , !6 }
!llvm.ident = ! { !7 }
!0 = distinct !DICompileUnit ( language: D W _ L A N G _ C 99 , file: !1 , producer: "clang version 6.0.0 " , isOptimized: true , runtimeVersion: 0 , emissionKind: F u l l D e b u g , enums: !2 )
!1 = !DIFile ( filename: "sdagsplit-1.c" , directory: "/X86" )
!2 = ! { }
!3 = ! { i32 1 , !"NumRegisterParameters" , i32 0 }
!4 = ! { i32 2 , !"Dwarf Version" , i32 2 }
!5 = ! { i32 2 , !"Debug Info Version" , i32 3 }
!6 = ! { i32 1 , !"wchar_size" , i32 4 }
!7 = ! { !"clang version 6.0.0 " }
!8 = distinct !DISubprogram ( name: "foo" , scope: !1 , file: !1 , line: 2 , type: !9 , isLocal: false , isDefinition: true , scopeLine: 3 , flags: D I F l a g P r o t o t y p e d , isOptimized: true , unit: !0 , variables: !12 )
!9 = !DISubroutineType ( types: !10 )
!10 = ! { !11 , !11 , !11 }
!11 = !DIBasicType ( name: "long long int" , size: 64 , encoding: D W _ A T E _ s i g n e d )
!12 = ! { !13 , !14 , !15 }
!13 = !DILocalVariable ( name: "a" , arg: 1 , scope: !8 , file: !1 , line: 2 , type: !11 )
!14 = !DILocalVariable ( name: "b" , arg: 2 , scope: !8 , file: !1 , line: 2 , type: !11 )
!15 = !DILocalVariable ( name: "res" , scope: !8 , file: !1 , line: 4 , type: !11 )
!16 = !DIExpression ( )
!17 = !DILocation ( line: 2 , column: 26 , scope: !8 )
!18 = !DILocation ( line: 2 , column: 39 , scope: !8 )
!19 = !DILocation ( line: 4 , column: 12 , scope: !8 )
!20 = !DILocation ( line: 5 , column: 9 , scope: !21 )
!21 = distinct !DILexicalBlock ( scope: !8 , file: !1 , line: 5 , column: 7 )
!22 = !DILocation ( line: 4 , column: 19 , scope: !8 )
!23 = !DILocation ( line: 5 , column: 7 , scope: !8 )
!24 = !DILocation ( line: 8 , column: 1 , scope: !8 )